Entry
Name
crotonyl-CoA carboxylase/reductase;
CCR;
crotonyl-CoA reductase (carboxylating)
Class
Oxidoreductases;
Acting on the CH-CH group of donors;
With NAD+ or NADP+ as acceptor
BRITE hierarchy
Sysname
(2S)-ethylmalonyl-CoA:NADP+ oxidoreductase (decarboxylating)
Reaction(IUBMB)
(2S)-ethylmalonyl-CoA + NADP+ = (E)-but-2-enoyl-CoA + CO2 + NADPH + H+ [RN:
R09291 ]
Reaction(KEGG)
Substrate
Product
Comment
The reaction is catalysed in the reverse direction. This enzyme, isolated from the bacterium Rhodobacter sphaeroides, catalyses (E)-but-2-enoyl-CoA-dependent oxidation of NADPH in the presence of CO2. When CO2 is absent, the enzyme catalyses the reduction of (E)-but-2-enoyl-CoA to butanoyl-CoA, but with only 10% of maximal activity (relative to (E)-but-2-enoyl-CoA carboxylation).
History
EC 1.3.1.85 created 2011
Pathway
ec00630 Glyoxylate and dicarboxylate metabolism
ec01120 Microbial metabolism in diverse environments
Orthology
K14446 crotonyl-CoA carboxylase/reductase
Genes
DIC : Dpoa569_002944(ccrA)
RBS : RHODOSMS8_02646(ccrA2)
MAQU : Maq22A_1p32000(ccrA)
MMES : MMSR116_22775(ccrA)
MROS : EHO51_03605(ccrA) EHO51_15500(ccrA) EHO51_19170(ccrA)
TSV : DSM104635_01214(ccrA2)
SINL : DSM14862_02472(ccrA2_2)
SPSE : SULPSESMR1_00409(ccrA2)
RMM : ROSMUCSMR3_01832(ccrA2)
RID : RIdsm_00116(ccrA2_1)
AHT : ANTHELSMS3_02145(ccr)
LVS : LOKVESSMR4R_02786(ccrA2)
AALK : LGT41_0001985(ccrA)
HADH : FRZ61_01130(adhP) FRZ61_44220
RKO : JWS14_45090(ccrA) JWS14_48900(ccrA)
SPAC : B1H29_00485 B1H29_36575
SPEU : CGZ69_08265(ccrA) CGZ69_28875(ccrA)
PSUU : Psuf_066920(adhP_1) Psuf_073520(adhP_2)
BALA : DSM104299_01927(ccr)
SBAE : DSM104329_01844(ccr)
LKB : LPTSP3_g32730(adhP_3)
» show all
Taxonomy
Reference
Authors
Erb TJ, Berg IA, Brecht V, Muller M, Fuchs G, Alber BE
Title
Synthesis of C5-dicarboxylic acids from C2-units involving crotonyl-CoA carboxylase/reductase: the ethylmalonyl-CoA pathway.
Journal
Sequence
Reference
Authors
Erb TJ, Brecht V, Fuchs G, Muller M, Alber BE
Title
Carboxylation mechanism and stereochemistry of crotonyl-CoA carboxylase/reductase, a carboxylating enoyl-thioester reductase.
Journal
Other DBs
ExplorEnz - The Enzyme Database: 1.3.1.85
ExPASy - ENZYME nomenclature database: 1.3.1.85