Exact Mass: 197.08186560000001

Exact Mass Matches: 197.08186560000001

Found 160 metabolites which its exact mass value is equals to given mass value 197.08186560000001, within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error 0.001 dalton.

N-Acetylhistidine

(2S)-2-Acetamido-3-(1H-imidazol-5-yl)propanoic acid

C8H11N3O3 (197.0800376)

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‚Äôs (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). Constituent of the tissues of various fish and amphibian subspecies N-Acetylhistidine is found in fishes. KEIO_ID A073

Methyl5-(but-3-en-1-yl)amino-1,3,4-oxadiazole-2-carboxylate

Methyl 5-(but-3-en-1-yl)amino-1,3,4-oxadiazole-2-carboxylate

C8H11N3O3 (197.0800376)

HC Red 3

2-[(4-Amino-2-nitrophenyl)amino]-ethanol

C8H11N3O3 (197.0800376)

CONFIDENCE standard compound; INTERNAL_ID 517; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 1613; ORIGINAL_PRECURSOR_SCAN_NO 1611 CONFIDENCE standard compound; INTERNAL_ID 517; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 1614; ORIGINAL_PRECURSOR_SCAN_NO 1611 CONFIDENCE standard compound; INTERNAL_ID 517; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 1605; ORIGINAL_PRECURSOR_SCAN_NO 1604 CONFIDENCE standard compound; INTERNAL_ID 517; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 1619; ORIGINAL_PRECURSOR_SCAN_NO 1617 CONFIDENCE standard compound; INTERNAL_ID 517; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 1629; ORIGINAL_PRECURSOR_SCAN_NO 1626 CONFIDENCE standard compound; INTERNAL_ID 517; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 1597; ORIGINAL_PRECURSOR_SCAN_NO 1592

1-Hydroxy-3-methyl-9H-carbazole

5-Phenyl-2-(4-(5-phenyl-1,3-oxazol-2-yl)phenyl)-1,3-oxazole