Exact Mass: 247.1446
Exact Mass Matches: 247.1446
Found 64 metabolites which its exact mass value is equals to given mass value 247.1446,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
Threonyllysine
Threonyllysine is a dipeptide composed of threonine and lysine. It is an incomplete breakdown product of protein digestion or protein catabolism. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Some dipeptides are known to have physiological or cell-signalling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis.
3-Hydroxybutyrylcarnitine
3-Hydroxybutyrylcarnitine is an acylcarnitine. More specifically, it is an 3-hydroxybutyric acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. 3-Hydroxybutyrylcarnitine is therefore classified as a short chain AC. As a short-chain acylcarnitine 3-hydroxybutyrylcarnitine is a member of the most abundant group of carnitines in the body, comprising more than 50\\% of all acylcarnitines quantified in tissues and biofluids (PMID: 31920980). Some short-chain carnitines have been studied as supplements or treatments for a number of diseases, including neurological disorders and inborn errors of metabolism. In particular 3-hydroxybutyrylcarnitine is elevated in the blood or plasma of individuals with short-chain L-3-hydroxyacyl-CoA dehydrogenase deficiency (PMID: 11489939, PMID: 15870679), prediabetes (PMID: 28505362), T2DM (PMID: 28505362), metallosis (PMID: 30271721), mitochondrial acetoacetyl-coa thiolase deficiency (PMID: 20157782), and heart failure (PMID: 25881932). It is also decreased in the blood or plasma of individuals with psoriasis (PMID: 33391503). 3-Hydroxybutyrylcarnitine is elevated in the urine of individuals with renal cell carcinoma (PMID: 29658093). Carnitine acetyltransferase (CrAT, EC:2.3.1.7) is responsible for the synthesis of all short-chain and short branched-chain acylcarnitines (PMID: 23485643). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].
Lysylthreonine
Lysylthreonine is a dipeptide composed of lysine and threonine. It is an incomplete breakdown product of protein digestion or protein catabolism. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Some dipeptides are known to have physiological or cell-signalling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis.
(R)-3-hydroxybutyrylcarnitine
(R)-3-Hydroxybutyrylcarnitine is an acylcarnitine. More specifically, it is an 3-hydroxybutanoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. (R)-3-Hydroxybutyrylcarnitine is therefore classified as a short chain AC. As a short-chain acylcarnitine (R)-3-hydroxybutyrylcarnitine is a member of the most abundant group of carnitines in the body, comprising more than 50\\% of all acylcarnitines quantified in tissues and biofluids (PMID: 31920980). Some short-chain carnitines have been studied as supplements or treatments for a number of diseases, including neurological disorders and inborn errors of metabolism. In particular (R)-3-hydroxybutyrylcarnitine is elevated in the blood or plasma of individuals with short-chain L-3-hydroxyacyl-CoA dehydrogenase deficiency (PMID: 11489939, PMID: 15870679), prediabetes (PMID: 28505362), T2DM (PMID: 28505362), metallosis (PMID: 30271721), mitochondrial acetoacetyl-coa thiolase deficiency (PMID: 20157782), and heart failure (PMID: 25881932). It is also decreased in the blood or plasma of individuals with psoriasis (PMID: 33391503). (R)-3-Hydroxybutyrylcarnitine is elevated in the urine of individuals with renal cell carcinoma (PMID: 29658093). Carnitine acetyltransferase (CrAT, EC:2.3.1.7) is responsible for the synthesis of all short-chain and short branched-chain acylcarnitines (PMID: 23485643). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].
N1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)-2-cyano-3-(dimethylamino)acrylamide
Me glycoside,N-Ac,4,6-dimesyl-alpha-D-Pyranose-2-Amino-2,3-dideoxy-ribo-hexopyranose
Me glycoside,N-Ac,2,4-dimesyl-beta-D-Pyranose-3-Amino-3,6-dideoxygalactose
4,6-Dideoxy-3-C-methyl-4-(methuylamino)mannose,9CI-beta-D-Pyranose-form-Me glycoside,N-Ac
Lys-THR
A dipeptide formed from L-lysine and L-threonine residues.
n-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]formamide
N-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]formamide
6-[2-(2-ethyl-4-methyl-1H-imidazol-1-yl)ethyl]-1,3,5-triazine-2,4-diamine
4-(4-METHYLPIPERIDINE-1-CARBONYL)PHENYLBORONIC ACID
2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PIPERIDINE HYDROCHLORIDE
[4-[(cyclopentanecarbonylamino)methyl]phenyl]boronic acid
(S)-Methyl 4-[(tert-butoxycarbonyl)amino]-5-hydroxypentanoate
(6-((1-(TERT-BUTYL)-1H-PYRAZOL-5-YL)AMINO)PYRAZIN-2-YL)METHANOL
DI-TERT-BUTYL(METHYL)PHOSPHONIUM TETRAFLUOROBORATE
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-propanenitrile
n-[2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]formamide
3-(4-METHYLPIPERIDINE-1-CARBONYL)PHENYLBORONIC ACID
2-[[2-(3,5-Dimethyl-1-pyrazolyl)-6-methyl-4-pyrimidinyl]amino]ethanol
[(1S)-1-carboxy-2-(1H-indol-3-yl)ethyl]-trimethylazanium
(3S)-3-[(3R)-3-hydroxybutanoyl]oxy-4-(trimethylazaniumyl)butanoate
alpha-Carboxy-N,N,N-trimethyl-1H-indole-3-ethan-1-aminium
(R)-3-hydroxybutyrylcarnitine
An O-hydroxybutyryl-L-carnitine in which the acyl group is specified as 3-hydroxybutyryl.
3-hydroxybutyrylcarnitine
An O-acylcarnitine having 3-hydroxybutyryl as the acyl substituent.
O-hydroxybutyryl-L-carnitine
An O-acyl-L-carnitine that is L-carnitine having a hydroxybutyryl group as the acyl substituent in which the positions of the hydroxy group is unspecified.
