Record Information
Version2.0
StatusDetected and Quantified
Creation Date2022-06-17 20:21:06 UTC
Update Date2025-10-07 16:09:42 UTC
Metabolite IDMMDBc0056263
Metabolite Identification
Common Nameprecorrin-3A
Descriptionprecorrin-3A is a corrinoid metabolite involved in the biosynthesis of vitamin B12. It features a complex chemical structure characterized by a tetracyclic ring system with various substituents, including an acetic acid side chain. In the metabolic pathway, precorrin-3A is synthesized from uroporphyrinogen III through a series of enzymatic reactions, including the action of SUMT and SP2MT (PMID:8546704 ). It is further transformed into precorrin-6x via a sequence of enzymatic steps involving CobG, CobJ, CobM, and CobF, which catalyze the necessary modifications at specific carbon positions (PMID:8226690 ). The conversion of precorrin-3A to precorrin-3B is mediated by CobG, an iron-sulfur protein that facilitates oxidation (PMID:8226690 ). Additionally, precorrin-3A participates in reactions that generate tertiary alcohols and gamma lactones, highlighting its role in more complex biochemical transformations (PMID:19068481 ). Overall, precorrin-3A serves as a crucial intermediate in the intricate biosynthetic pathway leading to the formation of vitamin B12, showcasing its significance in both chemistry and biology.
Structure
Synonyms
ValueSource
Precorrin-3aChEBI
Molecular FormulaC43H43N4O16
Average Mass871.833
Monoisotopic Mass871.27124638
IUPAC Name3-[(9S,10S,14S,15S)-9,14,20-tris(2-carboxyethyl)-5,10,15,19-tetrakis(carboxymethyl)-10,15,17-trimethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1^{3,6}.1^{8,11}.1^{13,16}]tetracosa-1(20),3,5,7,11(23),12,16,18-octaen-4-yl]propanoate
Traditional Name3-[(9S,10S,14S,15S)-9,14,20-tris(2-carboxyethyl)-5,10,15,19-tetrakis(carboxymethyl)-10,15,17-trimethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1^{3,6}.1^{8,11}.1^{13,16}]tetracosa-1(20),3,5,7,11(23),12,16,18-octaen-4-yl]propanoate
CAS Registry NumberNot Available
SMILES
[H]\C1=C2\N=C(\C(\[H])=C3/N\C(=C(C)/C4=C(CC([O-])=O)C(CCC([O-])=O)=C(CC5=C(CCC([O-])=O)C(CC([O-])=O)=C1N5)N4)[C@@](C)(CC(O)=O)[C@]3([H])CCC([O-])=O)[C@@](C)(CC([O-])=O)[C@]2([H])CCC([O-])=O
InChI Identifier
InChI=1S/C43H50N4O16/c1-19-40-23(13-37(58)59)21(5-9-33(50)51)27(46-40)14-26-20(4-8-32(48)49)22(12-36(56)57)28(44-26)15-29-24(6-10-34(52)53)42(2,17-38(60)61)31(45-29)16-30-25(7-11-35(54)55)43(3,18-39(62)63)41(19)47-30/h15-16,24-25,44,46-47H,4-14,17-18H2,1-3H3,(H,48,49)(H,50,51)(H,52,53)(H,54,55)(H,56,57)(H,58,59)(H,60,61)(H,62,63)/p-7/b29-15-,30-16-,41-19-/t24-,25-,42+,43+/m1/s1
InChI KeyAILJETHLKULYHE-IHDLTXBCSA-G