Figure 9: Domains within hypothetical DsrB protein from a gutless worm’s symbiont. All the 313 amino residues of the sequence GUTLS_WRM_ELBA_ READ_1433974420 are presented. The sulfite reductase ferredoxin-like half domain, position 1 – 67, is blue. The sulfite reductase 4Fe-4S domain, 74 – 293, is green. The 4Fe-4S binding site, 165 – 174, and 4Fe-4S binding site, 184 – 207, are yellow insertions. The repressor of phase-1 flagellin, 270 – 277, is red. Predicted protein structures were retrieved from the following servers: ESyPred3D, position 11 – 149 (bold cursive), 3D-JIGSAW, 153 – 206 (bold) and GENO3D, 207 – 299 (cursive).