Classification Term: 168019
寡肽 (ontology term: 0f8d318d8d85f5f4d9f2fbc2189a6f58)
寡肽
found 7 associated metabolites at sub_class metabolite taxonomy ontology rank level.
Ancestor: 短肽
Child Taxonomies: 肽类激素
D-Alanyl-D-alanine
The ATP-dependent carboxylate-amine/thiol ligase superfamily is known to contain enzymes catalyzing the formation of various types of peptide, one of which is d-alanyl-d-alanine.(PMID: 16030213). The glycopeptide antibiotic vancomycin acts by binding to the D-alanyl-D-alanine terminus of the cell wall precursor lipid II in the cytoplasmic membrane.(PMID: 17418637). D-alanine-D-alanine ligase from Thermotoga maritima ATCC 43589 (TmDdl) was a useful biocatalyst for synthesizing D-amino acid dipeptides.D-Alanine-D-alanine ligase (Ddl) catalyzes the biosynthesis of an essential bacterial peptidoglycan precursor D-alanyl-D-alanine and it represents an important target for development of new antibacterial drugs. (PMID: 17267218). D-Alanyl-D-alanine is a microbial metabolite. Alanyl-alanine, also known as ala-ala or A-a dipeptide, is a member of the class of compounds known as dipeptides. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Alanyl-alanine is soluble (in water) and a weakly acidic compound (based on its pKa). Alanyl-alanine can be found in chives, which makes alanyl-alanine a potential biomarker for the consumption of this food product. Alanyl-alanine can be found primarily in feces. Alanyl-alanine exists in all living organisms, ranging from bacteria to humans. Acquisition and generation of the data is financially supported in part by CREST/JST. D-Ala-D-Ala constitutes the terminus of the peptide part of the peptidoglycan monomer unit and is involved in the transpeptidation reaction as the substrate. D-Ala-D-Ala is catalyzed by D-Alanine-D-Alanine ligase. D-Ala-D-Ala is a bacterial endogenous metabolite[1][2].
S-Lactoylglutathione
S-Lactoylglutathione is a substrate of lactoylglutathione lyase [EC 4.4.1.5] in pyruvate metabolism (KEGG). Another enzyme, glyoxalase I, synthesizes this compound by converting methylglyoxal and reduced glutathione to S-lactoylglutathione. S-D-lactoylglutathione can be hydrolysed by thiolesterases to reduced glutathione and D-lactate but also converted to N-D-lactoylcysteinylglycine and N-D-lactoylcysteine by gamma-glutamyl transferase and dipeptidase (PMID: 8632674). S-lactoylglutathione has also been shown to modulate microtubule assembly (PMID: 690442). [HMDB]. S-Lactoylglutathione is found in many foods, some of which are blackcurrant, oat, pomegranate, and brussel sprouts. S-Lactoylglutathione is a substrate of lactoylglutathione lyase [EC 4.4.1.5] in pyruvate metabolism (KEGG). Another enzyme, glyoxalase I, synthesizes this compound by converting methylglyoxal and reduced glutathione to S-lactoylglutathione. S-D-lactoylglutathione can be hydrolysed by thiolesterases to reduced glutathione and D-lactate but also converted to N-D-lactoylcysteinylglycine and N-D-lactoylcysteine by gamma-glutamyl transferase and dipeptidase (PMID: 8632674). S-lactoylglutathione has also been shown to modulate microtubule assembly (PMID: 690442). Acquisition and generation of the data is financially supported in part by CREST/JST. D000970 - Antineoplastic Agents KEIO_ID L016; [MS3] KO009026 KEIO_ID L016; [MS2] KO009024 KEIO_ID L016
Leupeptin
A tripeptide composed of N-acetylleucyl, leucyl and argininal residues joined in sequenceby peptide linkages. It is an inhibitor of the calpains, a family of calcium-activated proteases which promote cell death. D004791 - Enzyme Inhibitors > D011480 - Protease Inhibitors > D015853 - Cysteine Proteinase Inhibitors D004791 - Enzyme Inhibitors > D011480 - Protease Inhibitors > D007976 - Leupeptins Acquisition and generation of the data is financially supported in part by CREST/JST. KEIO_ID L006; [MS2] KO009038 KEIO_ID L006
Gamma-glutamyl-leucine
gamma-Glutamylleucine is a dipeptide composed of gamma-glutamate and leucine, and is a proteolytic breakdown product of larger proteins. It belongs to the family of N-acyl-alpha amino acids and derivatives. These are compounds containing an alpha amino acid which bears an acyl group at its terminal nitrogen atom. gamma-Glutamylleucine is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. gamma-Glutamylleucine is a biomarker for the consumption of whey protein. It is found in urine (PMID: 3782411). Gamma-glutamylleucine, also known as gamma-glutamyl-leucine, (d,l)-isomer or L-gamma-glu-L-leu, is a member of the class of compounds known as dipeptides. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Gamma-glutamylleucine is slightly soluble (in water) and a moderately acidic compound (based on its pKa). Gamma-glutamylleucine can be found in soft-necked garlic, which makes gamma-glutamylleucine a potential biomarker for the consumption of this food product. Gamma-glutamylleucine can be found primarily in blood and feces. H-γ-Glu-Leu-OH is a dipeptide consisting of γ-glutamic acid and leucine, terminated by a hydroxyl group[1].
Gamma-Glutamylvaline
gamma-Glutamylvaline is a dipeptide composed of gamma-glutamate and valine. It is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. gamma-Glutamylvaline belongs to the family of N-acyl-alpha amino acids and derivatives. These are compounds containing an alpha amino acid which bears an acyl group at its terminal nitrogen atom. It is found in urine (PMID: 3782411). γ-Glutamylvaline is an activator of CaSR with anti-inflammatory activity. γ-Glutamylvaline inhibits TNF-α-induced proinflammatory cytokine production and increases Wnt5a expression. γ-Glutamylvaline activates calcium-sensing receptor pathways in adipocytes of 3T3-L1 mice and prevents low-grade chronic inflammation[1].
Gly-Trp
A dipeptide formed from glycine and L-tryptophan residues.
