Figure 7. Most of the genes in the carboxysome operon of Thiomicrospira crunogena are present in Lost City metagenomic sequences.

Amino acid percent identities between putative homologs are shown. The Lost City sequences are incomplete; it is expected that further sequencing and assembly will yield a complete carboxysome operon. cbbL and cbbS encode the large and small subunits of RubisCO. csoS3 encodes carbonic anhydrase. All other genes are expected to encode structural proteins forming the carboxysome shell. Accession numbers for contigs C1529 and C1530 are ACQI01001529 and ACQI01001530.