Words similar to prc-h
Example sentences for: prc-h
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This is consistent with the previously observed case of horizontal transfer of α-proteobacterial reaction-center genes, including that for PRC-H, into the β-proteobacteria [ 34].
This search (expect value (e) threshold for inclusion in profile = 0.01) recovered, in addition to the orthologs of the PRC-H proteins from other purple proteobacteria, several uncharacterized proteins from the cyanobacterium Anabaena (for example, all5315 and alr5332, iteration 2, e = 10 -6-10 -4), non-photosynthetic α-proteobacteria such as Mesorhizobium, Sinorhizobium, Brucella and Caulobacter (for example, SMc00885, iteration 4, e = 10 -4or CAC1676, iteration 5, e = 10 -6), several other assorted bacteria like Deinococcus, Bacillus and Streptomyces (for example, YlmC iteration 4, e = 10 -5) and several archaea with completely sequenced genomes.
So far, homologs of the H subunit have only been found in photosynthetic proteobacteria [ 17, 18, 19] and the carboxy-terminal globular domain of PRC-H shows a distinct β-barrel fold that is structurally unrelated to other characterized β-barrels.
Homologs of PRC-H, with a conserved acidic residue that has been shown to have a role in regulating electron transfer in the reduction of the secondary quinone of reaction centers, are also found in non-photosynthetic α -proteobacteria, cyanobacteria, D. radiodurans and the archaeon M. acetivorans.
Here we use sequence-profile analysis and comparative genomics to show that the β-barrel domain of PRC-H defines a novel, widespread superfamily of β-barrel domains that is represented in several bacterial, plant and archaeal genomes.
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