Nit of PSII). Two of the psbA sequences (AM1 2166 and AM1 2889) share 97 nucleotide and 100 amino acid identity, whereas the third (AM1 0448) shares only 61 amino acid identity and is more closely related to a divergent PsbA in Anabaena variabilis (YP 324615) and Crocosphaera watsonii (ZP 00515211). Two of the psbD sequences (AM1 1083 and AM1 4084) share 99 nucleotide and 100 amino acid ident
Nit of PSII). Two of the psbA sequences (AM1 2166 and AM1 2889) share 97 nucleotide and 100 amino acid identity, whereas the third (AM1 0448) shares only 61 amino acid identity and is more closely related to a divergent PsbA in Anabaena variabilis (YP 324615) and Crocosphaera watsonii (ZP 00515211). Two of the psbD sequences (AM1 1083 and AM1 4084) share 99 nucleotide and 100 amino acid ident
Synthesis (Fig. 3). There is no clear differentiation that would explain the near-complete conversion of -carotene to zeaxanthin by -carotene hydroxylase (CrtR), the enzyme responsible for zeaxanthin biosynthesis. We suggest a putative carotene biosynthesis pathway (Fig. 3) that accommodates the distinct complement of the carotenoid biosynthesis enzymes and their end products in A. marina.Light-Ha
Oteins including the plant and Prochlorococcus enzymes responsible for the synthesis of Chl b from chlorophyllide a, chlorophyllide a oxygenase (CAO) (Fig. 2) (31). Five putative proteins containing a CAO-type Rieske-FeS motif are encoded by A. marina. Most of the candidate genes in A. marina fall into orthologous clusters with other hypothetical cyanobacterial proteins (Fig. 2). Only one protein,
Nit of PSII). Two of the psbA sequences (AM1 2166 and AM1 2889) share 97 nucleotide and 100 amino acid identity, whereas the third (AM1 0448) shares only 61 amino acid identity and is more closely related to a divergent PsbA in Anabaena variabilis (YP 324615) and Crocosphaera watsonii (ZP 00515211). Two of the psbD sequences (AM1 1083 and AM1 4084) share 99 nucleotide and 100 amino acid ident
Nit of PSII). Two of the psbA sequences (AM1 2166 and AM1 2889) share 97 nucleotide and 100 amino acid identity, whereas the third (AM1 0448) shares only 61 amino acid identity and is more closely related to a divergent PsbA in Anabaena variabilis (YP 324615) and Crocosphaera watsonii (ZP 00515211). Two of the psbD sequences (AM1 1083 and AM1 4084) share 99 nucleotide and 100 amino acid ident
Nit of PSII). Two of the psbA sequences (AM1 2166 and AM1 2889) share 97 nucleotide and 100 amino acid identity, whereas the third (AM1 0448) shares only 61 amino acid identity and is more closely related to a divergent PsbA in Anabaena variabilis (YP 324615) and Crocosphaera watsonii (ZP 00515211). Two of the psbD sequences (AM1 1083 and AM1 4084) share 99 nucleotide and 100 amino acid ident
Ese genes are more closely related to those in filamentous cyanobacteria than the other -carotene-containing Prochlorococcus species.2008 www.pnas.org cgi doi 10.1073 pnas.A. marina is the only cyanobacterium found to contain both cruA and cruP, responsible for - and -carotene synthesis, in addition to lycopene cyclase (crtL) (35, 36). One class of cyclase, CrtL-e for -cyclase, was identified as t