| Accession | TIGR02019 |
| Name | BchJ |
| Function | bacteriochlorophyll 4-vinyl reductase |
| Gene Symbol | bchJ |
| Trusted Cutoff | 74.30 |
| Domain Trusted Cutoff | 74.30 |
| Noise Cutoff | 28.80 |
| Domain Noise Cutoff | 28.80 |
| Isology Type | equivalog |
| HMM Length | 188 |
| Mainrole Category | Biosynthesis of cofactors, prosthetic groups, and carriers |
| Subrole Category | Chlorophyll and bacteriochlorphyll |
| Gene Ontology Term | GO:0003824: catalytic activity molecular_function |
| | GO:0015995: chlorophyll biosynthetic process biological_process |
| Author | Selengut J |
| Entry Date | Oct 15 2003 9:14AM |
| Last Modified | Feb 14 2011 3:27PM |
| Comment | This HMM represents the component of bacteriochlorophyll synthetase responsible for reduction of the B-ring pendant ethylene (4-vinyl) group. It appears that this step must precede the reduction of ring D, at least by the "dark" protochlorophyllide reductase enzymes BchN, BchB and BchL [1]. This family appears to be present in photosynthetic bacteria except for the cyanobacterial clade. Cyanobacteria must use a non-orthologous gene to carry out this required step for the biosynthesis of both bacteriochlorophyll and chlorophyll. |
| References | RN [1]
RM PMID: 7876113
RT Altered monovinyl and divinyl protochlorophyllide pools in bchJ mutants of Rhodobacter capsulatus. Possible monovinyl substrate discrimination of light-independent protochlorophyllide reductase.
RA Suzuki JY, Bauer CE.
RL J Biol Chem. 1995 Feb 24;270(8):3732-40. |
| Genome Property | GenProp0144: chlorophyllide a biosynthesis from protoporphyrin IX (HMM) |
