Showing metabocard for N-Acetylhistidine (MMDBc0000479)
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Version | 1.0 | ||||||||||||||||||||||||||||||||||||||||||||
Status | Detected and Quantified | ||||||||||||||||||||||||||||||||||||||||||||
Creation Date | 2020-12-10 18:38:42 UTC | ||||||||||||||||||||||||||||||||||||||||||||
Update Date | 2024-04-30 19:32:34 UTC | ||||||||||||||||||||||||||||||||||||||||||||
Metabolite ID | MMDBc0000479 | ||||||||||||||||||||||||||||||||||||||||||||
Metabolite Identification | |||||||||||||||||||||||||||||||||||||||||||||
Common Name | N-Acetylhistidine | ||||||||||||||||||||||||||||||||||||||||||||
Description | N-Acetyl-L-histidine or N-Acetylhistidine, belongs to the class of organic compounds known as N-acyl-alpha amino acids. N-acyl-alpha amino acids are compounds containing an alpha amino acid which bears an acyl group at its terminal nitrogen atom. N-Acetylhistidine can also be classified as an alpha amino acid or a derivatized alpha amino acid. Technically, N-Acetylhistidine is a biologically available N-terminal capped form of the proteinogenic alpha amino acid L-histidine. N-acetyl amino acids can be produced either via direct synthesis of specific N-acetyltransferases or via the proteolytic degradation of N-acetylated proteins by specific hydrolases. N-terminal acetylation of proteins is a widespread and highly conserved process in eukaryotes that is involved in protection and stability of proteins (PMID: 16465618 ). About 85% of all human proteins and 68% of all yeast proteins are acetylated at their N-terminus (PMID: 21750686 ). Several proteins from prokaryotes and archaea are also modified by N-terminal acetylation. The majority of eukaryotic N-terminal-acetylation reactions occur through N-acetyltransferase enzymes or NAT’s (PMID: 30054468 ). These enzymes consist of three main oligomeric complexes NatA, NatB, and NatC, which are composed of at least a unique catalytic subunit and one unique ribosomal anchor. The substrate specificities of different NAT enzymes are mainly determined by the identities of the first two N-terminal residues of the target protein. The human NatA complex co-translationally acetylates N-termini that bear a small amino acid (A, S, T, C, and occasionally V and G) (PMID: 30054468 ). NatA also exists in a monomeric state and can post-translationally acetylate acidic N-termini residues (D-, E-). NatB and NatC acetylate N-terminal methionine with further specificity determined by the identity of the second amino acid. N-acetylated amino acids, such as N-acetylhistidine can be released by an N-acylpeptide hydrolase from peptides generated by proteolytic degradation (PMID: 16465618 ). In addition to the NAT enzymes and protein-based acetylation, N-acetylation of free histidine can also occur. In particular, N-Acetylhistidine can be biosynthesized from L-histidine and acetyl-CoA by the enzyme histidine N-acetyltransferase (EC 2.3.1.33). Many N-acetylamino acids are classified as uremic toxins if present in high abundance in the serum or plasma (PMID: 26317986 ; PMID: 20613759 ). Uremic toxins are a diverse group of endogenously produced molecules that, if not properly cleared or eliminated by the kidneys, can cause kidney damage, cardiovascular disease and neurological deficits (PMID: 18287557 ). | Read more...||||||||||||||||||||||||||||||||||||||||||||
Structure | |||||||||||||||||||||||||||||||||||||||||||||
Synonyms |
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Molecular Formula | C8H11N3O3 | ||||||||||||||||||||||||||||||||||||||||||||
Average Mass | 197.194 | ||||||||||||||||||||||||||||||||||||||||||||
Monoisotopic Mass | 197.080041226 | ||||||||||||||||||||||||||||||||||||||||||||
IUPAC Name | (2S)-2-acetamido-3-(1H-imidazol-4-yl)propanoic acid | ||||||||||||||||||||||||||||||||||||||||||||
Traditional Name | (2S)-2-acetamido-3-(1H-imidazol-4-yl)propanoic acid | ||||||||||||||||||||||||||||||||||||||||||||
CAS Registry Number | Not Available | ||||||||||||||||||||||||||||||||||||||||||||
SMILES | CC(=O)N[C@@H](CC1=CNC=N1)C(O)=O | ||||||||||||||||||||||||||||||||||||||||||||
InChI Identifier | InChI=1S/C8H11N3O3/c1-5(12)11-7(8(13)14)2-6-3-9-4-10-6/h3-4,7H,2H2,1H3,(H,9,10)(H,11,12)(H,13,14)/t7-/m0/s1 | ||||||||||||||||||||||||||||||||||||||||||||
InChI Key | KBOJOGQFRVVWBH-ZETCQYMHSA-N | ||||||||||||||||||||||||||||||||||||||||||||
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