Journal
PHOTOSYNTHESIS RESEARCH
Volume 79, Issue 2, Pages 167-177Publisher
SPRINGER
DOI: 10.1023/B:PRES.0000015396.99271.90
Keywords
cryptochrome/photolyase family; photolyase; photoreactivation; Rhodobacter
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Based on deduced amino-acid sequence similarities to class-I photolyases, the open reading frame ORF90 was identified from the genome sequence of Rhodobacter capsulatus SB1003. Photoreactivation activity is not detectable in an ORF90 deletion mutant of R. capsulatus SB1003. The phenotype of R. capsulatus wild-type cells was restored by plasmid borne ORF90 of R. capsulatus DeltaORF90. Furthermore, we detected an ORF90-related CPD-specific photoreactivation activity in R. capsulatus cell extracts. The results show that the gene product of ORF90 is involved in photoreactivation and encodes a class-I cyclobutane pyrimidine dimer photolyase.
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