Classification Term: 3791
Acylaminosugars (ontology term: CHEMONTID:0000146)
Organic compounds containing a sugar linked to a chain through N-acyl group." []
found 52 associated metabolites at no_class-level_7 metabolite taxonomy ontology rank level.
Ancestor: Amino sugars
Child Taxonomies: There is no child term of current ontology term.
N-Acetyllactosamine
C14H25NO11 (383.14275399999997)
N-Acetyllactosamine, also known as galb1-4glcnacb or lacnac, belongs to the class of organic compounds known as acylaminosugars. These are organic compounds containing a sugar linked to a chain through N-acyl group. N-Acetyllactosamine exists in all living organisms, ranging from bacteria to humans. Structural unit in higher oligosaccharides present in human milk N-Acetyllactosamine (LacNAc), a nitrogen-containing disaccharide, is an important component of various oligosaccharides such as glycoproteins and sialyl Lewis X. N-Acetyllactosamine can be used as the starting material for the synthesis of various oligosaccharides. N-Acetyllactosamine has prebiotic effects[1][2].
N-Acetyl-D-glucosamine
N-Acetyl-D-Glucosamine (N-acetlyglucosamine) is a monosaccharide derivative of glucose. Chemically it is an amide between glucosamine and acetic acid. A single N-acetlyglucosamine moiety linked to serine or threonine residues on nuclear and cytoplasmic proteins -O-GlcNAc, is an ubiquitous post-translational protein modification. O-GlcNAc modified proteins are involved in sensing the nutrient status of the surrounding cellular environment and adjusting the activity of cellular proteins accordingly. O-GlcNAc regulates cellular responses to hormones such as insulin, initiates a protective response to stress, modulates a cells capacity to grow and divide, and regulates gene transcription. In humans, it exists in skin, cartilage and blood vessel as a component of hyaluronic acid, and bone tissue, cornea and aorta as a component of keratan sulfate. (PMID 16237703). Monomer of Chitinand is also in the exopolysaccharide from blue-green alga Cyanospira capsulata (CCD) N-Acetyl-D-Glucosamine (N-Acetyl-2-amino-2-deoxy-D-glucose) is a monosaccharide derivative of glucose.
N-Acetyl-D-Glucosamine 6-Phosphate
N-Acetyl-D-Glucosamine 6-Phosphate is an intermediate in the metabolism of Aminosugars. It is a substrate for Glucosamine 6-phosphate N-acetyltransferase. [HMDB] N-Acetyl-D-Glucosamine 6-Phosphate is an intermediate in the metabolism of Aminosugars. It is a substrate for Glucosamine 6-phosphate N-acetyltransferase. KEIO_ID A144
N-Acetylmuramate
This compound belongs to the family of N-acyl-alpha-hexosamines. These are carbohydrate derivatives containing a hexose moeity in which the oxygen atom is replaced by an n-acyl group. KEIO_ID A191
N,N'-diacetylchitobiose
C16H28N2O11 (424.16930179999997)
N,N-diacetylchitobiose, also known as (GlcNAc)2, is classified as a member of the Acylaminosugars. Acylaminosugars are organic compounds containing a sugar linked to a chain through N-acyl group. N,N-diacetylchitobiose is considered to be soluble (in water) and acidic. N,N-diacetylchitobiose may be a unique E.coli metabolite N,N'-Diacetylchitobiose is a dimer of β(1,4) linked N-acetyl-D glucosamine. N,N'-Diacetylchitobiose is the hydrolysate of chitin and can be used as alternative carbon source by?E. coli[1].
N-Acetylmuramoyl-Ala
This compound belongs to the family of N-acyl-alpha-hexosamines. These are carbohydrate derivatives containing a hexose moeity in which the oxygen atom is replaced by an n-acyl group.
N-Acetyl-4-O-acetylneuraminic acid
N-Acetyl-4-O-acetylneuraminic acid is a component of glycoprotein- and glycolipid-bound sialic acids present in the human erythrocyte membrane (RBC). (PMID: 12527384) [HMDB] N-Acetyl-4-O-acetylneuraminic acid is a component of glycoprotein- and glycolipid-bound sialic acids present in the human erythrocyte membrane (RBC). (PMID: 12527384).
Lacto-N-biose I
C14H25NO11 (383.14275399999997)
Lacto-N-biose I is a common oligosaccharide found in human milk and in numerous other tissues. Oligosaccharides are important components of glycoproteins and glycolipids and also occur as free oligosaccharides in several body fluids.(PMID: 14993226; 11925506; 11432777; 9760191; 9592127; 8608564; 7591266; 7627975; 7766648; 1490103; 3146987; 6689405) [HMDB] Lacto-N-biose I is a common oligosaccharide found in human milk and in numerous other tissues. Oligosaccharides are important components of glycoproteins and glycolipids and also occur as free oligosaccharides in several body fluids.(PMID: 14993226; 11925506; 11432777; 9760191; 9592127; 8608564; 7591266; 7627975; 7766648; 1490103; 3146987; 6689405).
Lipid A
Lipid A is a lipid component of an endotoxin held responsible for toxicity of Gram-negative bacteria. It is the innermost of the three regions of the lipopolysaccharide (LPS, also called endotoxin) molecule, and its hydrophobic nature allows it to anchor the LPS to the outer membrane. While its toxic effects can be damaging, the sensing of lipid A by the human immune system may also be critical for the onset of immune responses to Gram-negative infection, and for the subsequent successful fight against the infection. Many of the immune activating abilities of LPS can be attributed to the lipid A unit. It is a very potent stimulant of the immune system, activating cells (for example, monocytes or macrophages) at picogram per milliliter quantities. Lipid A has been found in Escherichia, Pseudomonas, Salmonella and meningococcus (PMID: 11948150; PMID: 12045108). Lipid A is a lipid component of an endotoxin held responsible for toxicity of Gram-negative bacteria. It is the innermost of the three regions of the lipopolysaccharide (LPS, also called endotoxin) molecule, and its hydrophobic nature allows it to anchor the LPS to the outer membrane. While its toxic effects can be damaging, the sensing of lipid A by the human immune system may also be critical for the onset of immune responses to Gram-negative infection, and for the subsequent successful fight against the infection.; Many of the immune activating abilities of LPS can be attributed to the lipid A unit. It is a very potent stimulant of the immune system, activating cells (for example, monocytes or macrophages) at picogram per milliliter quantities. [HMDB]
N-Acetylgalactosamine 4-sulphate
C8H15NO9S (301.04675000000003)
Also known as GalNAc4S, this molecule is a key component of dermatan, keratan and chondroitin sulfate. It is also a substrate for the enzyme N-acteylgalactosamine-4-sulphate transferase. This molecule is found in elevated concentrations in the urine of patients suffering from muchopolysaccharidosis type III, IV and VI. Levels are typically 300-400 times normal values. GalNAc4S is thought to be derived from the action of beta-N-acetylhexosaminidase on sulphated GlcNAc or GalNAc residues at the non-reducing end of keratan sulphate, dermatan sulphate or chondroitin sulphate. [HMDB] Also known as GalNAc4S, this molecule is a key component of dermatan, keratan and chondroitin sulfate. It is also a substrate for the enzyme N-acteylgalactosamine-4-sulphate transferase. This molecule is found in elevated concentrations in the urine of patients suffering from muchopolysaccharidosis type III, IV and VI. Levels are typically 300-400 times normal values. GalNAc4S is thought to be derived from the action of beta-N-acetylhexosaminidase on sulphated GlcNAc or GalNAc residues at the non-reducing end of keratan sulphate, dermatan sulphate or chondroitin sulphate.
beta-N-Acetylglucosamine
beta-N-Acetylglucosamine is an acylaminosugar, which is an organic compound containing a sugar linked to a chain through an N-acyl group. This compound is water-soluble. Glycosylation with beta-N-acetylglucosamine is one of the most common post-translational modifications. All animals and plants dynamically attach and remove beta-N-acetylglucosamine at serine and threonine residues on myriad nuclear and cytoplasmic proteins. beta-N-Acetylglucosamine cycling, which is tightly regulated by the concerted actions of two highly-conserved enzymes, serves as a nutrient and stress sensor. Proteins glycosylated with beta-N-acetylglucosamine can be found in almost every intracellular compartment and almost every functional class (PMID: 17460662).
N-Acetyl-D-mannosamine 6-phosphate
N-Acetyl-D-mannosamine 6-phosphate is an intermediate in amino sugar metabolism and is a substrate for UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase, Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase, Alpha-N-acetylglucosaminidase and Exostosin-2. It can be generated from N-acetyl-neuraminate-9-phosphate or N-acetyl-D-mannosamine. [HMDB] N-Acetyl-D-mannosamine 6-phosphate is an intermediate in amino sugar metabolism and is a substrate for UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase, Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase, Alpha-N-acetylglucosaminidase and Exostosin-2. It can be generated from N-acetyl-neuraminate-9-phosphate or N-acetyl-D-mannosamine.
N-Acetylmannosamine
N-Acetylmannosamine, also known as beta-ManNAcc or β-ManNAc, belongs to the class of organic compounds known as acylaminosugars. These are organic compounds containing a sugar linked to a chain through N-acyl group. Within humans, N-acetylmannosamine participates in a number of enzymatic reactions. In particular, N-acetylmannosamine can be biosynthesized from N-acetyl-D-glucosamine, which is catalyzed by the enzyme N-acylglucosamine 2-epimerase. In addition, N-acetylmannosamine and uridine 5-diphosphate can be biosynthesized from uridine diphosphate-N-acetylglucosamine; which is mediated by the enzyme bifunctional UDP-N-acetyl glucosamine 2-epimerase / N-acetylmannosamine kinase. In humans, N-acetylmannosamine is involved in the metabolic disorder called the salla disease/infantile sialic acid storage disease pathway. In the rate-limiting step of the pathway, UDP-GlcNAc is converted into ManNAc by UDP-GlcNAc 2-epimerase, encoded by the epimerase domain of GNE. Improved sialylation after the addition of ManNAc and other supporting ingredients to the culture medium not only increases manufacturing yield, but also improves therapeutic efficacy by increasing solubility, increasing half-life and reducing immunogenicity by reducing the formation of antibodies to the therapeutic glycoprotein When the GNE epimerase kinase does not function correctly in the human body thereby reducing the available ManNAc, it is reasonable to assume that treatment with ManNAc could assist with improving health benefits. There is no available therapy to treat GNE myopathy. ManNAc is the first committed biological precursor of N-acetylneuraminic acid (Neu5Ac, sialic acid). N-Acetylmannosamine is a monosaccharide involved in a range of metabolic processes. It is an amino sugar/amino acid that consists of neuraminic acids, glycolipids and glycoproteins, and is used for the synthesis of sialic acid. [Wikipedia] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Cyclic N-Acetyl-D-mannosamine (Cyclic ManNAc) is an endogenous metabolite.
LPS with O-antigen
C211H376N8O126P6 (5224.1685096)
Lipopolysaccharides (LPS), also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of Gram-negative bacteria, act as endotoxins and elicit strong immune responses in animals. LPS is the major component of the outer membrane of Gram-negative bacteria, contributing greatly to the structural integrity of the bacteria, and protecting the membrane from certain kinds of chemical attack. LPS also increases the negative charge of the cell membrane and helps stabilize the overall membrane structure. It is of crucial importance to gram negative bacteria, whose death results if it is mutated or removed. LPS is an endotoxin, and induces a strong response from normal animal immune systems. LPS acts as the prototypical endotoxin because it binds the CD14/TLR4/MD2 receptor complex, which promotes the secretion of pro-inflammatory cytokines in many cell types, but especially in macrophages. In Immunology, the term "LPS challenge" refers to the process of exposing a subject to an LPS which may act as a toxin. LPS is also an exogenous pyrogen (external fever-inducing substance). Being of crucial importance to gram negative bacteria, these molecules make candidate targets for new antimicrobial agents. LPS comprises three parts: 1. O antigen (or O polysaccharide). 2. Core polysaccharide. 3. Lipid A. The making of LPS can be modified in order to present a specific sugar structure. Those can be recognised by either other LPS (which enables to inhibit LPS toxins) or glycosyltransferases which use those sugar structure to add more specific sugars. It has recently been shown that a specific enzyme in the intestine (alkaline phosphatase) can detoxify LPS by removing the two phosphate groups found on LPS carbohydrates [6]. This may function as an adaptive mechanism to help the host manage potentially toxic effects of gram-negative bacteria normally found in the small intestine. (from wiki). This card shows the example of LPS in E. coli with one o-antigen unit. LPS with O-antigen has been found to be a metabolite of Escherichia, Pseudomonas and Salmonella (PMID: 12045108).
LPS core
C175H317N5O101P6 (4290.8247612)
Lipopolysaccharides (LPS), also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of Gram-negative bacteria, act as endotoxins and elicit strong immune responses in animals. LPS is the major component of the outer membrane of Gram-negative bacteria, contributing greatly to the structural integrity of the bacteria, and protecting the membrane from certain kinds of chemical attack. LPS also increases the negative charge of the cell membrane and helps stabilize the overall membrane structure. It is of crucial importance to gram negative bacteria, whose death results if it is mutated or removed. LPS is an endotoxin, and induces a strong response from normal animal immune systems. LPS acts as the prototypical endotoxin because it binds the CD14/TLR4/MD2 receptor complex, which promotes the secretion of pro-inflammatory cytokines in many cell types, but especially in macrophages. In Immunology, the term "LPS challenge" refers to the process of exposing a subject to an LPS which may act as a toxin. LPS is also an exogenous pyrogen (external fever-inducing substance). Being of crucial importance to gram negative bacteria, these molecules make candidate targets for new antimicrobial agents. LPS comprises three parts: 1. O antigen (or O polysaccharide). 2. Core polysaccharide. 3. Lipid A. LPS Core domain always contains an oligosaccharide component which attaches directly to lipid A and commonly contains sugars such as heptose and 3-deoxy-D-mannooctulosonic Acid (also known as KDO, keto-deoxyoctulosonate).[2] The LPS Cores of many bacteria also contain non-carbohydrate components, such as phosphate, amino acids, and ethanolamine substitutents.(from wiki). This card shows the LPS core component in E.coli. LPS core has also been found in Pseudomonas and Salmonella (PMID: 9791168) (Wikipedia). Lipopolysaccharides (LPS), also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of Gram-negative bacteria, act as endotoxins and elicit strong immune responses in animals.
Hyaluronan biosynthesis, precursor 1
This compound belongs to the family of N-acyl-alpha-hexosamines. These are carbohydrate derivatives containing a hexose moeity in which the oxygen atom is replaced by an n-acyl group.
2-(Acetylamino)-2-deoxy-alpha-D-mannopyranose
D003879 - Dermatologic Agents Cyclic N-Acetyl-D-mannosamine (Cyclic ManNAc) is an endogenous metabolite. N-Acetyl-D-Glucosamine (N-Acetyl-2-amino-2-deoxy-D-glucose) is a monosaccharide derivative of glucose.
N-Acetylglucosamine 6-sulfate
C8H15NO9S (301.04675000000003)
N-acetylglucosamine 6-sulfate is a physiological intermediate during the degradation of keratan sulfate and it is usually hydrolyzed intralysosomally by N-acetylglucosamine-6-sulfate sulfatase. (PMID 3161730) [HMDB] N-acetylglucosamine 6-sulfate is a physiological intermediate during the degradation of keratan sulfate and it is usually hydrolyzed intralysosomally by N-acetylglucosamine-6-sulfate sulfatase. (PMID 3161730).
Chondroitin
(C14H21NO11)nH2O (3790753.4551086)
Chondroitin, without the "sulfate", has been used to describe a fraction of chondroitin sulfate with little or no sulfation. However, this distinction is not universally used (Wikipedia). Chondroitin is a mucopolysaccharide constituent of chondrin. Chondrin is a gelatin-like protein-carbohydrate substance that can be obtained by boiling cartilage in water. Cartilage is a connective tissue that contains cells embedded in a matrix of chondrin. Chondroitin is a glycosaminoglycan (GAG) composed of a chain of alternating sugars (N-acetyl-galactosamine and glucuronic acid). It is usually found attached to proteins as part of a proteoglycan. A chondroitin chain can have over 100 individual sugars, each of which can be sulfated in variable positions and quantities. Chondroitins functions largely depend on the properties of the overall proteoglycan of which it is a part. These functions can be broadly divided into structural and regulatory roles. However, this division is not absolute and some proteoglycans have both structural and regulatory roles. Chondroitin is an ingredient found commonly in dietary supplements used as an alternative medicine to treat osteoarthritis. It is commonly sold together with glucosamine. The dosage of oral chondroitin used in human clinical trials is 800-1200 mg per day. Most chondroitin appears to be made from extracts of cartilaginous cow and pig tissues (cow trachea and pig ear and nose), but other sources such as shark, fish and bird cartilage are also used. Since chondroitin is not a uniform substance, and is naturally present in a wide variety of forms, the precise composition of each supplement will vary. While it is a prescription or over-the-counter drug in 22 countries, chondroitin is regulated in the U.S. as a food product by the Food and Drug Administration. As a result, there are no mandatory standards for formulation, and no guarantee that the product is correctly labelled. Chondroitin is a mucopolysaccharide constituent of chondrin. Chondrin is a gelatin-like protein-carbohydrate substance that can be obtained by boiling cartilage in water. Cartilage is a connective tissue that contains cells embedded in a matrix of chondrin. Chondroitin is a glycosaminoglycan (GAG) composed of a chain of alternating sugars (N-acetyl-galactosamine and glucuronic acid). It is usually found attached to proteins as part of a proteoglycan. A chondroitin chain can have over 100 individual sugars, each of which can be sulfated in variable positions and quantities. The structure depicted in this MetaboCard is simply a disaccharide component of the chontroitin subunit. Chondroitins functions largely depend on the properties of the overall proteoglycan of which it is a part. These functions can be broadly divided into structural and regulatory roles. However, this division is not absolute and some proteoglycans have both structural and regulatory roles. Chondroitin is an ingredient found commonly in dietary supplements used as an alternative medicine to treat osteoarthritis. It is commonly sold together with glucosamine. The dosage of oral chondroitin used in human clinical trials is 800-1200 mg per day. Most chondroitin appears to be made from extracts of cartilaginous cow and pig tissues (cow trachea and pig ear and nose), but other sources such as shark, fish and bird cartilage are also used. Since chondroitin is not a uniform substance, and is naturally present in a wide variety of forms, the precise composition of each supplement will vary. While it is a prescription or over-the-counter drug in 22 countries, chondroitin is regulated in the U.S. as a food product by the Food and Drug Administration. As a result, there are no mandatory standards for formulation, and no guarantee that the product is correctly labelled. [HMDB]
Chitin
C24H41N3O16 (627.2486706000001)
Chitin is one of the main components in the cell walls of fungi, the exoskeletons of insects and other arthropods (such as crustaceans) as well as fish and frogs. It is a polysaccharide that is constructed from units of acetylglucosamine (more completely, N-acetyl-D-glucose-2-amine). These are linked together in beta-1,4 fashion (in a similar manner to the glucose units which form cellulose). In effect, chitin may be described as cellulose with one hydroxyl group on each monomer replaced by an acetylamine group. This allows for increased hydrogen bonding between adjacent polymers, giving the polymer increased strength. Chitin is the second most abundant polysaccharide in the world (after cellulose). Chitinases break down chitin and are a part of the defence mechanism of mammals against chitin-containing parasites in lower life forms. Under certain circumstances, chitin can act as an allergen. Research using murine models has shown that chitin is a size-dependent microbial-associated molecular pattern (MAMP) that can induce an immunological response via pattern recognition receptors. Medium-sized chitin micro-particles (CMPs) have been shown to induce inflammation, while small-sized CMPs reduce inflammation. Additionally, mammalian chitinases may play a key role in mediating the T-helper 2 cell-driven inflammatory response that is commonly associated with asthma. The high prevalence of asthma among people working with chitinous substances, such as crabs and fungi, suggests that chitin might be an allergen playing a significant role in the development of asthma. Chitin is an unusual substance as it is a naturally occurring polymer. Its breakdown is conducted by bacteria which have receptors to simple sugars from the decomposition of chitin. If chitin is detected they then produce enzymes to digest the chitin by reducing it to simple sugars and ammonia.
N-Acetylgalactosamine 4,6-disulfate
C8H15NO12S2 (381.00356700000003)
N-Acetylgalactosamine 4,6-disulfate (GalNAc4,6diS) is one of the sulphated N-acetylhexosamines that have been isolated from human urine. PMID: 3931626. N-Acetylgalactosamine 4,6-disulfate (GalNAc4,6diS)is one of the sulphated N-acetylhexosamines that have been isolated from human urine.
Dermatan sulfate
(C14H21NO14S)nH2O (4590241.6682916)
Dermatan sulfate is a naturally occurring glycosaminoglycan found mostly in the skin and in connective tissue. It differs from chondroitin sulfate A by containing Iduronic acid in place of glucuronic acid (its epimer at carbon atom 5) (from Merck, 12th ed). Dermatan sulfate consists of sulfated N-acetylgalactosamine alternating with uronic acid residues. The latter consists of predominantly L-Iduronic acid, some of which are sulfated. There are also occasional glucuronic acid residues. Degradation proceeds stepwise from the nonreducing end by the sequential action of three exo-glycosidases (alpha-L-iduronidase, beta-glucuronidase, and beta-hexosaminidase) and two sulfatases (iduronate 2-sulfatase and N-acetylgalactosamine 4-sulfatase). An endoglycosidase, hyaluronidase, may also participate to a limited extent in the degradation process by cleaving next to the occasional glucuronic acid residues (OMMBID: 136-2). "Chondroitin sulfate B" is an old name for dermatan sulfate, but it is no longer classified as a true chondroitin sulfate. A naturally occurring glycosaminoglycan found mostly in the skin and in connective tissue. It differs from chondroitin sulfate A (see chondroitin sulfateS) by containing Iduronic acid in place of glucuronic acid, its epimer, at carbon atom 5. (from Merck, 12th ed)
Chondroitin 4-sulfate
(C14H21NO14S)nH2O (4590241.6682916)
Chondroitin 4-sulfate, also known as chondroitin sulfate A, is a derivative of chondroitin which has a sulfate moiety esterified to carbon 4 of the N-acetylgalactosamine (GalNAc) sugar. Chondroitin sulfate (CS) is a linear heteropolysaccharide consisting of repeating disaccharide units of glucuronic acid and galactosamine, which is commonly sulfated at C-4 and/or C-6 of galactosamine. Chondroitin sulfate is a glycosaminoglycan (GAG) covalently linked to proteins forming proteoglycans (PGs). GAGs are all anionic linear heteropolysaccharide chains of repeating disaccharide units. According to the monosaccharide types and the glycosidic bonds between them, GAGs are divided into (1) hyaluronan, (2) CS and dermatan sulfate (DS), (3) heparan sulfate and heparin, and (4) keratan sulfate. CS was isolated from cartilage in 1884, but the nature of its monosaccharides and structure was first described in 1925. On the basis of the structure of chondroitin sulfate, at least five enzyme activities could be predicted, including three transferases (EC 2.4.1.79, the initiating GalNAc transferase; EC 2.4.1.175, polymerizing GalNAc; and EC 2.4.1.17, GlcA transferase) and two sulfotransferases (EC 2.8.2.5, GalNAc 4-sulfotransferase and EC 2.8.2.17, GalNAc 6-sulfotransferase). Additional enzymes exist for the epimerization of GlcA, sulfation of the uronic acids, and other patterns of sulfation found in unusual species of chondroitin. Chondroitin sulfate assembly can occur on virtually all proteoglycans, depending on the cell in which the core protein is expressed. Chondroitin sulfates from different sources vary in the location of sulfate groups. Separation of the products reveals that many types of chondroitin sulfate exist in nature but many chains are hybrid structures containing more than one type of disaccharide. Animal cells also degrade chondroitin sulfate in lysosomes using a series of exoglycolytic activities (PMID: 8993162). Chondroiton sulfate is a polymer that can contain up to 100 individual sugars. Chondroitin 4-sulfate is a derivative of chondroitin which has a sulfate moiety esterified to the galactosamine moiety of chondroitin. Chondroitin sulfate A, or chondroitin 4-sulfate, and chondroitin sulfate C, or chondroitin 6-sulfate, have the sulfate esterified in the 4- and 6-positions, respectively. Chondroitin sulfate B (beta heparin; DERMATAN SULFATE) is a misnomer and this compound is not a true chondroitin sulfate.
N-Acetylglucosamine 6-phosphate
N-Acetylglucosamine 6-phosphate (CAS: 1746-32-3), also known as GlcNAc6P, belongs to the class of organic compounds known as acylaminosugars. These are organic compounds containing a sugar linked to a chain through an N-acyl group. Outside of the human body, N-acetylglucosamine 6-phosphate has been detected, but not quantified in, several different foods, such as butternut squash, breakfast cereals, babassu palms, vaccinium (blueberry, cranberry, huckleberry), and cauliflowers. This could make N-acetylglucosamine 6-phosphate a potential biomarker for the consumption of these foods. N-Acetylglucosamine 6-phosphate has been identified in the human placenta (PMID: 32033212).
Chitobiose
Chitobiose is a dimer of beta-1,4-linked glucosamine units. There is ambiguity as to which structure the name refers, owing to the method by which it was first isolated. [HMDB] Chitobiose is a dimer of beta-1,4-linked glucosamine units. There is ambiguity as to which structure the name refers, owing to the method by which it was first isolated.
beta-1,4-Mannosyl-N-acetylglucosamine
C14H25NO11 (383.14275399999997)
beta-1,4-Mannosyl-N-acetylglucosamine, also known as 4-O-beta-D-Mannopyranosyl-N-acetyl-D-glucosamine or Man(β1-4)GlcNAc, is an intermediate in aminosugar metabolism. It is a substrate of lysosomal beta-mannosidase.
(a-D-mannosyl)2-b-D-mannosyl-N-acetylglucosamine
(alpha-D-mannosyl)2-beta-D-mannosyl-N-acetylglucosamine is an intermediate in aminosugars metabolism. It is substrate of Lysosomal alpha-mannosidase. [HMDB] (alpha-D-mannosyl)2-beta-D-mannosyl-N-acetylglucosamine is an intermediate in aminosugars metabolism. It is substrate of Lysosomal alpha-mannosidase. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
Metrizamide
C18H22I3N3O8 (788.8541142000001)
Metrizamide is only found in individuals that have used or taken this drug. It is a solute for density gradient centrifugation offering higher maximum solution density without the problems of increased viscosity. It is also used as a resorbable, non-ionic contrast medium.Organic iodine compounds such as metrizamide block x-rays as they pass through the body, thereby allowing body structures containing iodine to be delineated in contrast to those structures that do not contain iodine. The degree of opacity produced by these compounds is directly proportional to the total amount (concentration and volume) of the iodinated contrast agent in the path of the x-rays. After intrathecal administration into the subarachnoid space, diffusion of metrizamide in the CSF allows the visualization of the subarachnoid spaces of the head and spinal canal. After intravascular administration, metrizamide makes opaque those vessels in its path of flow, allowing visualization of the internal structures until significant hemodilution occurs. Metrazamide also has some toxic effects which are thought to be due to its ability to inhibit glucose metabolism.
Chondroitin 6-sulfate
(C14H21NO14S)nH2O (4590241.6682916)
Chondroitin 6-sulfate, also known as chondroitin sulfate C, is a derivative of chondroitin which has a sulfate moiety esterified to carbon 6 of the N-acetylgalactosamine (GalNAc) sugar. Chondroitin sulfate (CS) is a linear heteropolysaccharide consisting of repeating disaccharide units of glucuronic acid and galactosamine, which is commonly sulfated at C-4 and/or C-6 of galactosamine. Chondroitin sulfate is a glycosaminoglycan (GAG) covalently linked to proteins forming proteoglycans (PGs). GAGs are all anionic linear heteropolysaccharide chains of repeating disaccharide units. According to the monosaccharide types and the glycosidic bonds between them, GAGs are divided into (1) hyaluronan, (2) CS and dermatan sulfate (DS), (3) heparan sulfate and heparin, and (4) keratan sulfate. CS was isolated from cartilage in 1884, but the nature of its monosaccharides and structure was first described in 1925. On the basis of the structure of chondroitin sulfate, at least five enzyme activities could be predicted, including three transferases (EC 2.4.1.79, the initiating GalNAc transferase; EC 2.4.1.175, polymerizing GalNAc; and EC 2.4.1.17, GlcA transferase) and two sulfotransferases (EC 2.8.2.5, GalNAc 4-sulfotransferase and EC 2.8.2.17, GalNAc 6-sulfotransferase). Additional enzymes exist for the epimerization of GlcA, sulfation of the uronic acids, and other patterns of sulfation found in unusual species of chondroitin. Chondroitin sulfate assembly can occur on virtually all proteoglycans, depending on the cell in which the core protein is expressed. Chondroitin sulfates from different sources vary in the location of sulfate groups. Separation of the products reveals that many types of chondroitin sulfate exist in nature but many chains are hybrid structures containing more than one type of disaccharide. Animal cells also degrade chondroitin sulfate in lysosomes using a series of exoglycolytic activities (PMID: 8993162). Chondroiton sulfate is a polymer that can contain up to 100 individual sugars.
Chondroitin 4,6-disulfate
(C14H21NO17S2)nH2O (5389729.8814746)
Chondroitin 4,6-disulfate, also known as chondroitin sulfate E, is a derivative of chondroitin which has a sulfate moiety esterified to carbons 4 and 6 of the N-acetylgalactosamine (GalNAc) sugar. Chondroitin sulfate (CS) is a linear heteropolysaccharide consisting of repeating disaccharide units of glucuronic acid and galactosamine, which is commonly sulfated at C-4 and/or C-6 of galactosamine. Chondroitin sulfate is a glycosaminoglycan (GAG) covalently linked to proteins forming proteoglycans (PGs). GAGs are all anionic linear heteropolysaccharide chains of repeating disaccharide units. According to the monosaccharide types and the glycosidic bonds between them, GAGs are divided into (1) hyaluronan, (2) CS and dermatan sulfate (DS), (3) heparan sulfate and heparin, and (4) keratan sulfate. CS was isolated from cartilage in 1884, but the nature of its monosaccharides and structure was first described in 1925. On the basis of the structure of chondroitin sulfate, at least five enzyme activities could be predicted, including three transferases (EC 2.4.1.79, the initiating GalNAc transferase; EC 2.4.1.175, polymerizing GalNAc; and EC 2.4.1.17, GlcA transferase) and two sulfotransferases (EC 2.8.2.5, GalNAc 4-sulfotransferase and EC 2.8.2.17, GalNAc 6-sulfotransferase). Additional enzymes exist for the epimerization of GlcA, sulfation of the uronic acids, and other patterns of sulfation found in unusual species of chondroitin. Chondroitin sulfate assembly can occur on virtually all proteoglycans, depending on the cell in which the core protein is expressed. Chondroitin sulfates from different sources vary in the location of sulfate groups. Separation of the products reveals that many types of chondroitin sulfate exist in nature but many chains are hybrid structures containing more than one type of disaccharide. Animal cells also degrade chondroitin sulfate in lysosomes using a series of exoglycolytic activities (PMID: 8993162). Chondroiton sulfate is a polymer that can contain up to 100 individual sugars.
N-Acetylmannosamine-6P
N-Acetylmannosamine-6P, also known as N-acetylmannosamine 6-phosphate or ManNAc-6-P, is a member of the class of compounds known as acylaminosugars. These are organic compounds containing a sugar linked to a chain through an N-acyl group. N-Acetylmannosamine-6P is soluble (in water) and a moderately acidic compound (based on its pKa).
2-(Acetylamino)-2-Deoxy-6-O-Sulfo-alpha-D-Glucopyranose
C8H15NO9S (301.04675000000003)
N-(S-Nitroso-N-acetyl-D,L-penicillamine)-2-amino-2-deoxy-1,3,4,6-tetra-O-acetyl-beta-D-glucopyranose
alpha-D-Gal-(1->3)-beta-D-Gal-(1->4)-D-GlcNAc
C20H35NO16 (545.1955750000001)
Eritoran
Forsmann antigen
C16H28N2O11 (424.16930179999997)
Galbeta1-3(Fucalpha1-4)GlcNAcbeta
C20H35NO15 (529.2006600000001)
Galbeta1-3GIcNAcbeta
C14H25NO11 (383.14275399999997)
(5-Acetamido-3,4,6-trihydroxyoxan-2-yl)methyl dihydrogen phosphate
Globo-H
C20H35NO15 (529.2006600000001)
H Type II trisaccharide
C20H35NO15 (529.2006600000001)
Lacdinac
C16H28N2O11 (424.16930179999997)
N,N'-Diacetylchitobiose is a dimer of β(1,4) linked N-acetyl-D glucosamine. N,N'-Diacetylchitobiose is the hydrolysate of chitin and can be used as alternative carbon source by?E. coli[1].
Lewis b
Lewis y Tetrasaccharide
Lipid IVA
Lipopolysaccharide
C205H366N3O117P5 (4897.146895600001)
Lipoteichoic acid
C39H70N2O13 (774.4877650000001)
N-acetylmuramoyl-L-alanine
RsDPLA
3-Acetamido-5-[acetyl(methyl)amino]-2,4,6-triiodo-N-[(2R,3R,4R,5S,6R)-2,4,5-trihydroxy-6-(hydroxymethyl)oxan-3-yl]benzamide
C18H22I3N3O8 (788.8541142000001)
[(2R,3S,4R,5R,6R)-2-(Hydroxymethyl)-4,5-bis[[(3R)-3-hydroxytetradecanoyl]amino]-6-phosphonooxyoxan-3-yl] dihydrogen phosphate
Sdz mrl 953
C48H92NO14P (937.6255101999999)
