Exact Mass: 277.1249

Exact Mass Matches: 277.1249

Found 222 metabolites which its exact mass value is equals to given mass value 277.1249, within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error 0.001 dalton.

Queuine

2-Amino-5-((((1S,4S,5R)-4,5-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-1,7-dihydro-4H-pyrrolo(2,3-D)pyrimidin-4-one

C12H15N5O3 (277.1175)

Queuine is a highly modified derivative of guanine found in the first position of the anticodon of the transfer RNAs for asp, asn, his and tyr. The original transcripts of these tRNAs contain guanine in this position. All organisms with the exception of yeast and mycoplasma contain queuine. Bacteria synthesize queuine but it cannot be synthesized by higher mammals. Significant amounts of free queuine are present in common plant and animal food products. (PMID 9016755) [HMDB] Queuine is a highly modified derivative of guanine found in the first position of the anticodon of the transfer RNAs for asp, asn, his and tyr. The original transcripts of these tRNAs contain guanine in this position. All organisms with the exception of yeast and mycoplasma contain queuine. Bacteria synthesize queuine but it cannot be synthesized by higher mammals. Significant amounts of free queuine are present in common plant and animal food products. (PMID 9016755).

S-(2-Methylpropionyl)-dihydrolipoamide-E

[Dihydrolipoyllysine-residue (2-methylpropanoyl)transferase]S-(2-methylpropanoyl)dihydrolipoyllysine

C12H23NO2S2 (277.117)

S-(2-Methylpropionyl)-dihydrolipoamide-E is an intermediate in valine, leucine and isoleucine degradation(KEGG ID C15977). It is the second to last step in the synthesis of branched chain fatty acid and is converted from 2-methyl-1-hydroxypropyl-ThPP via the enzyme 2-oxoisovalerate dehydrogenase [EC:1.2.4.4]. It is then converted to isobutyryl-CoA via the enzyme dihydrolipoyllysine-residue (2-methylpropanoyl)transferase [EC:2.3.1.168]. [HMDB] S-(2-Methylpropionyl)-dihydrolipoamide-E is an intermediate in valine, leucine and isoleucine degradation(KEGG ID C15977). It is the second to last step in the synthesis of branched chain fatty acid and is converted from 2-methyl-1-hydroxypropyl-ThPP via the enzyme 2-oxoisovalerate dehydrogenase [EC:1.2.4.4]. It is then converted to isobutyryl-CoA via the enzyme dihydrolipoyllysine-residue (2-methylpropanoyl)transferase [EC:2.3.1.168].

Entecavir

2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-6,9-dihydro-3H-purin-6-one

C12H15N5O3 (277.1175)

Entecavir is an oral antiviral drug used in the treatment of hepatitis B infection. It is marketed under the trade name Baraclude (BMS). Entecavir is a guanine analogue that inhibits all three steps in the viral replication process, and the manufacturer claims that it is more efficacious than previous agents used to treat hepatitis B (lamivudine and adefovir). It was approved by the U.S. Food and Drug Administration (FDA) in March 2005. J - Antiinfectives for systemic use > J05 - Antivirals for systemic use > J05A - Direct acting antivirals > J05AF - Nucleoside and nucleotide reverse transcriptase inhibitors C471 - Enzyme Inhibitor > C1589 - Reverse Transcriptase Inhibitor > C97452 - Nucleoside Reverse Transcriptase Inhibitor D000890 - Anti-Infective Agents > D000998 - Antiviral Agents C254 - Anti-Infective Agent > C281 - Antiviral Agent

Arginylcysteine

(2R)-2-{[(2S)-2-amino-5-carbamimidamido-1-hydroxypentylidene]amino}-3-sulphanylpropanoic acid

C9H19N5O3S (277.1209)

Arginylcysteine is a dipeptide composed of arginine and cysteine. 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.

Cysteinyl-Arginine

2-[(2-Amino-1-hydroxy-3-sulphanylpropylidene)amino]-5-carbamimidamidopentanoic acid

C9H19N5O3S (277.1209)

Cysteinyl-Arginine is a dipeptide composed of cysteine and arginine. 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. This dipeptide has not yet been identified in human tissues or biofluids and so it is classified as an Expected metabolite.

N-(1-Deoxy-1-fructosyl)proline

1-{[(3S,4S,5R)-2,3,4-trihydroxy-5-(hydroxymethyl)oxolan-2-yl]methyl}pyrrolidine-2-carboxylic acid

C11H19NO7 (277.1161)

Fructose aminoacids are naturally occurring compounds derived from D-fructose and L-aminoacids. They are amadori products resulting from sugar-aminoacid interactions in food products, especially cooked foods [CCD] N-(1-Deoxy-1-fructosyl)proline is classified as a Natural Food Constituent (code WA) in the DFC.

3'-Deaminofusarochromanone

5-amino-6-(4-hydroxybutanoyl)-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one