Exact Mass: 115.0759
Exact Mass Matches: 115.0759
Found 341 metabolites which its exact mass value is equals to given mass value 115.0759,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
L-Proline
Proline (Pro), also known as L-proline is an alpha-amino acid. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon). Amino acids are organic compounds that contain amino (–NH2) and carboxyl (–COOH) functional groups, along with a side chain (R group) specific to each amino acid. Proline is one of 20 proteinogenic amino acids, i.e., the amino acids used in the biosynthesis of proteins. Proline is found in all organisms ranging from bacteria to plants to animals. It is classified as an aliphatic, non-polar amino acid. Proline is sometimes called an imino acid, although the IUPAC definition of an imine requires a carbon-nitrogen double bond. Proline is a non-essential amino acid that is synthesized from glutamic acid. It is an essential component of collagen and is important for proper functioning of joints and tendons. Proline is derived from the amino acid L-glutamate in which glutamate-5-semialdehyde is first formed by glutamate 5-kinase and glutamate-5-semialdehyde dehydrogenase (which requires NADH or NADPH). This semialdehyde can then either spontaneously cyclize to form 1-pyrroline-5-carboxylic acid, which is reduced to proline by pyrroline-5-carboxylate reductase, or turned into ornithine by ornithine aminotransferase, followed by cyclization by ornithine cyclodeaminase to form proline. L-Proline has been found to act as a weak agonist of the glycine receptor and of both NMDA and non-NMDA ionotropic glutamate receptors. It has been proposed to be a potential endogenous excitotoxin/neurotoxin. Studies in rats have shown that when injected into the brain, proline non-selectively destroys pyramidal and granule cells (PMID: 3409032 ). Therefore, under certain conditions proline can act as a neurotoxin and a metabotoxin. A neurotoxin causes damage to nerve cells and nerve tissues. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of proline are associated with at least five inborn errors of metabolism, including hyperprolinemia type I, hyperprolinemia type II, iminoglycinuria, prolinemia type II, and pyruvate carboxylase deficiency. People with hyperprolinemia type I often do not show any symptoms even though they have proline levels in their blood between 3 and 10 times the normal level. Some individuals with hyperprolinemia type I exhibit seizures, intellectual disability, or other neurological or psychiatric problems. Hyperprolinemia type II results in proline levels in the blood between 10 and 15 times higher than normal, and high levels of a related compound called pyrroline-5-carboxylate. Hyperprolinemia type II has signs and symptoms that vary in severity and is more likely than type I to involve seizures or intellectual disability. L-proline is pyrrolidine in which the pro-S hydrogen at position 2 is substituted by a carboxylic acid group. L-Proline is the only one of the twenty DNA-encoded amino acids which has a secondary amino group alpha to the carboxyl group. It is an essential component of collagen and is important for proper functioning of joints and tendons. It also helps maintain and strengthen heart muscles. It has a role as a micronutrient, a nutraceutical, an algal metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a mouse metabolite and a member of compatible osmolytes. It is a glutamine family amino acid, a proteinogenic amino acid, a proline and a L-alpha-amino acid. It is a conjugate base of a L-prolinium. It is a conjugate acid of a L-prolinate. It is an enantiomer of a D-proline. It is a tautomer of a L-proline zwitterion. Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. Proline is sometimes called an imino acid, although the IUPAC definition of an imine requires a carbon-nitrogen double bond. Proline is a non-essential amino acid that is synthesized from glutamic acid. It is an essential component of collagen and is important for proper functioning of joints and tendons. L-Proline is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Proline is a cyclic, nonessential amino acid (actually, an imino acid) in humans (synthesized from glutamic acid and other amino acids), Proline is a constituent of many proteins. Found in high concentrations in collagen, proline constitutes almost a third of the residues. Collagen is the main supportive protein of skin, tendons, bones, and connective tissue and promotes their health and healing. (NCI04) L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. Proline is sometimes called an imino acid, although the IUPAC definition of an imine requires a carbon-nitrogen double bond. Proline is a non-essential amino acid that is synthesized from glutamic acid. It is an essential component of collagen and is important for proper functioning of joints and tendons. A non-essential amino acid that is synthesized from GLUTAMIC ACID. It is an essential component of COLLAGEN and is important for proper functioning of joints and tendons. Pyrrolidine in which the pro-S hydrogen at position 2 is substituted by a carboxylic acid group. L-Proline is the only one of the twenty DNA-encoded amino acids which has a secondary amino group alpha to the carboxyl group. It is an essential component of collagen and is important for proper functioning of joints and tendons. It also helps maintain and strengthen heart muscles. Flavouring ingredient; dietary supplement L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins.
Maleamic acid
A dicarboxylic acid monoamide of maleamic acid. (Z)-4-Amino-4-oxobut-2-enoic acid is an endogenous metabolite.
Acetamidopropanal
Acetamidopropanal is associated with urea cycle and metabolism of arginine, proline, glutamate, aspartate and asparagine. Induction of SSAT typically gives rise to growth inhibition or apoptosis, depending upon the cell type and the extent of enzyme overexpression. In such experiments, growth inhibition has been closely linked to depletion of intracellular polyamine pools ( 12) and disturbances in polyamine metabolism ( 13), whereas apoptosis has been associated with downstream events emanating from polyamine oxidase-mediated oxidation of acetylated polyamines and the associated release of oxidatively reactive by-products such as hydrogen peroxide and the aldehyde, 3-acetamidopropanal. Acetamidopropanal, also known as N-(3-oxopropyl)acetamide or 3aap, is a member of the class of compounds known as alpha-hydrogen aldehydes. Alpha-hydrogen aldehydes are aldehydes with the general formula HC(H)(R)C(=O)H, where R is an organyl group. Acetamidopropanal is soluble (in water) and a very weakly acidic compound (based on its pKa). Acetamidopropanal can be found in a number of food items such as passion fruit, cloves, irish moss, and calabash, which makes acetamidopropanal a potential biomarker for the consumption of these food products. Acetamidopropanal exists in all living organisms, ranging from bacteria to humans.
D-Proline
D-proline is an isomer of the naturally occurring amino acid, L-Proline. D-amino acids have been found in relatively high abundance in human plasma and saliva (PMID: 16480744). These amino acids may be of bacterial origin, but there is also evidence that they are endogenously produced through amino acid racemase activity. (PMID: 1426150) [HMDB] D-proline is an isomer of the naturally occurring amino acid, L-Proline. D-amino acids have been found in relatively high abundance in human plasma and saliva (PMID: 16480744). These amino acids may be of bacterial origin, but there is also evidence that they are endogenously produced through amino acid racemase activity (PMID: 1426150). (R)-pyrrolidine-2-carboxylic acid is an endogenous metabolite. (R)-pyrrolidine-2-carboxylic acid is an endogenous metabolite.
DL-Proline
Proline, also known as dl-proline or hpro, belongs to proline and derivatives class of compounds. Those are compounds containing proline or a derivative thereof resulting from reaction of proline at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. Proline is soluble (in water) and a moderately acidic compound (based on its pKa). Proline can be found in a number of food items such as yellow zucchini, swiss chard, spinach, and cucumber, which makes proline a potential biomarker for the consumption of these food products. Proline (abbreviated as Pro or P; encoded by the codons CCU, CCC, CCA, and CCG) is an amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated NH2+ form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a side chain pyrrolidine, classifying it as a nonpolar (at physiological pH), aliphatic amino acid. It is non-essential in humans, meaning the body can synthesize it from the non-essential amino acid L-glutamate . CONFIDENCE standard compound; ML_ID 53 (R)-pyrrolidine-2-carboxylic acid is an endogenous metabolite. (R)-pyrrolidine-2-carboxylic acid is an endogenous metabolite.
4-Amino-2-methylenebutanoic acid
4-Amino-2-methylenebutanoic acid is found in nuts. 4-Amino-2-methylenebutanoic acid is found in Arachis hypogaea (peanut
Pterolactam
Constituent of Pteridium aquilinum (bracken fern). Pterolactam is found in green vegetables and root vegetables. Pterolactam is found in green vegetables. Pterolactam is a constituent of Pteridium aquilinum (bracken fern).
Isobutyl isothiocyanate
Isobutyl isothiocyanate is found in soft-necked garlic. Isobutyl isothiocyanate is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]") It is used as a food additive . Isobutyl isothiocyanate is found in soft-necked garlic.
1-Isothiocyanatobutane
1-Isothiocyanatobutane is found in brassicas. 1-Isothiocyanatobutane is a volatile constituent of cabbage and other crucifers arising from enzymic hydrolysis of Butyl glucosinolate
N-(2-Methylpropyl)acetamide
N-(2-Methylpropyl)acetamide is found in alcoholic beverages. N-(2-Methylpropyl)acetamide is found in wine.
N-(3-Methylbutyl)acetamide
N-(3-Methylbutyl)acetamide is found in alcoholic beverages. N-(3-Methylbutyl)acetamide is found in wine
xi-2,5-Dihydro-2,4-dimethylthiazole
xi-2,5-Dihydro-2,4-dimethylthiazole is found in animal foods. xi-2,5-Dihydro-2,4-dimethylthiazole is a volatile component of roasted peanuts and fried chicken. Volatile component of roasted peanuts and fried chicken. xi-2,5-Dihydro-2,4-dimethylthiazole is found in animal foods and nuts.
D-2-Butylisothiocyanate
D-2-butylisothiocyanate is a member of the class of compounds known as isothiocyanates. Isothiocyanates are organic compounds containing the isothiocyanate group, an isocyanate analogue with the general formula RN=C=S. D-2-butylisothiocyanate is practically insoluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). D-2-butylisothiocyanate can be found in horseradish, which makes D-2-butylisothiocyanate a potential biomarker for the consumption of this food product.
4-(Methylthio)-butanonitrile
4-(methylthio)-butanonitrile is a member of the class of compounds known as nitriles. Nitriles are compounds having the structure RC#N; thus C-substituted derivatives of hydrocyanic acid, HC#N. 4-(methylthio)-butanonitrile can be found in kohlrabi, which makes 4-(methylthio)-butanonitrile a potential biomarker for the consumption of this food product.
2-Butylisothiocyanate
2-butylisothiocyanate is a member of the class of compounds known as isothiocyanates. Isothiocyanates are organic compounds containing the isothiocyanate group, an isocyanate analogue with the general formula RN=C=S. 2-butylisothiocyanate is practically insoluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). 2-butylisothiocyanate is a green tasting compound and can be found in a number of food items such as white cabbage, broccoli, brussel sprouts, and cabbage, which makes 2-butylisothiocyanate a potential biomarker for the consumption of these food products.
Proline
COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins.
1-Nitrosopiperazine
CONFIDENCE standard compound; EAWAG_UCHEM_ID 3356 EAWAG_UCHEM_ID 3356; CONFIDENCE standard compound
DL-Allylglycine
D002491 - Central Nervous System Agents > D000697 - Central Nervous System Stimulants > D003292 - Convulsants D018377 - Neurotransmitter Agents > D018682 - GABA Agents > D018756 - GABA Antagonists
4-(methylthio)butanenitrile|4-(methylthio)butanonitrile|4-(methylthio)butylnitrile|4-(methylthio)butyronitrile|4-methylsulfanyl-butyronitrile|4-methylthiobutanenitrile|4-methylthiobutyronitrile
2-Methylpropylthiocyanat|iso-butyl-thiocyanate|isobutyl thiocyanate|Isobutylrhodanid|Isobutylthiocyanat|thiocyanic acid, 2-methylpropyl ester|Thiocyansaeure-isobutylester
1-Aminocyclobutanecarboxylic acid
1-Aminocyclobutanecarboxylic acid is a NMDA receptor partial agonist acting at the glycine site, NR1[1].
Proline
An alpha-amino acid that is pyrrolidine bearing a carboxy substituent at position 2. Acquisition and generation of the data is financially supported by the Max-Planck-Society L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins.
L-proline
A human metabolite taken as a putative food compound of mammalian origin [HMDB] MS2 deconvoluted using MS2Dec from all ion fragmentation data, MetaboLights identifier MTBLS1040; ONIBWKKTOPOVIA_STSL_0035_Proline_2000fmol_180506_S2_LC02_MS02_282; Spectrum acquired as described in Naz et al 2017 PMID 28641411. Preparation and submission to MassBank of North America by Chaleckis R. and Tada I. MS2 deconvoluted using CorrDec from all ion fragmentation data, MetaboLights identifier MTBLS1040; Spectrum acquired as described in Naz et al 2017 PMID 28641411. Preparation and submission to MassBank of North America by Chaleckis R. and Tada I. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins.
6-aminohexanoic acid n-hydroxysuccinimide ester matrix
dideuterio-(2,3,4,5,6-pentadeuteriophenyl)methanol
1-(hydroxymethyl)cyclopropanecarboxamide(SALTDATA: FREE)
Methyl 1-aminocyclopropanecarboxylate hydrochloride
4-Oxopentanoate
A member of the class of oxopentanoates that is the conjugate base of 4-oxopentanoic acid.
3-Methyl-2-oxobutanoate
A 2-oxo monocarboxylic acid anion that is the conjugate base of 3-methyl-2-oxobutanoic acid, arising from deprotonation of the carboxy group.
2-Oxopentanoate
A 2-oxo monocarboxylic acid anion that is the conjugate base of 2-oxopentanoic acid, obtained by deprotonation of the carboxy group.
5-Oxopentanoate
A 5-oxo monocarboxylic acid anion that is the conjugate base of 5-oxopentanoic acid, arising from deprotonation of the carboxy group.
D-proline zwitterion
A D-alpha-amino acid zwitterion that is D-proline in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3.
Isocaproate
A branched-chain saturated fatty acid anion that is pentanoate with a methyl group substituent at position 4.
3-Methylvalerate
A monocarboxylic acid anion that is the conjugate base of 3-methylvaleric acid, resulting from the deprotonation of the carboxy group. Major species at pH 7.3.
fatty acid anion 6:0
Any saturated fatty acid anion containing 6 carbons. Formed by deprotonation of the carboxylic acid moiety. Major species at pH 7.3.
2-methylvalerate
A monocarboxylic acid anion that is the conjugate base of 2-methylvaleric acid, resulting from the deprotonation of the carboxy group. Major species at pH 7.3.
L-proline zwitterion
The zwitterion formed from L-proline by proton transfer from the carboxy group to the ring nitrogen. It is the predominant species at physiological pH.
