| http://purl.uniprot.org/citations/20955518 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/20955518 | http://www.w3.org/2000/01/rdf-schema#comment | "Substrate channeling between the enzymatic steps in the (bacterio)chlorophyll biosynthetic pathway catalyzed by magnesium chelatase (BchI/ChlI, BchD/ChlD and BchH/ChlH subunits) and S-adenosyl-L-methionine:magnesium-protoporphyrin IX O-methyltransferase (BchM/ChlM) has been suggested. This involves delivery of magnesium-protoporphyrin IX from the BchH/ChlH subunit of magnesium chelatase to BchM/ChlM. Stimulation of BchM/ChlM activity by BchH/ChlH has previously been shown, and physical interaction of the two proteins has been demonstrated. In plants and cyanobacteria, there is an added layer of complexity, as Gun4 serves as a porphyrin (protoporphyrin IX and magnesium-protoporphyrin IX) carrier, but this protein does not exist in anoxygenic photosynthetic bacteria. BchJ may play a similar role to Gun4 in Rhodobacter, as it has no currently assigned function in the established pathway. Purified recombinant Rhodobacter capsulatus BchJ and BchM were found to cause a shift in the equilibrium amount of Mg-protoporphyrin IX formed in a magnesium chelatase assay. Analysis of this shift revealed that it was always in a 1 : 1 ratio with either of these proteins and the BchH subunit of the magnesium chelatase. The establishment of the new equilibrium was faster with BchM than with BchJ in a coupled magnesium chelatase assay. BchJ bound magnesium-protoporphyrin IX or formed a ternary complex with BchH and magnesium-protoporphyrin IX. These results suggest that BchJ may play a role as a general magnesium porphyrin carrier, similar to one of the roles of GUN4 in oxygenic organisms."xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.org/dc/terms/identifier | "doi:10.1111/j.1742-4658.2010.07877.x"xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/author | "Willows R.D."xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/author | "Sawicki A."xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/date | "2010"xsd:gYear |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/name | "FEBS J"xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/pages | "4709-4721"xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/title | "BchJ and BchM interact in a 1 : 1 ratio with the magnesium chelatase BchH subunit of Rhodobacter capsulatus."xsd:string |
| http://purl.uniprot.org/citations/20955518 | http://purl.uniprot.org/core/volume | "277"xsd:string |
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