Plastid genome analysis of three Nemaliophycidae red algal species suggests environmental adaptation for iron limited habitats
Fig 3
The sequence alignment of heme oxygenase proteins.
(A) The alignment of pbsA and its homologous proteins. The alignment shows the conserved heme oxygenases amino acid sequences in different lineages. Conserved heme binding pockets are marked as a blue asterisk. N-terminal transit peptides (green) are unique for HMOX1 proteins, with an exceptional transit peptide of pbsA gene in Cyanophora paradoxa, which was likely transferred to the nuclear genome independently. Heme oxygenase domain (grey) and putative transmembrane domain (red) are shown. (B) HMOX2 and pbsA contain putative transmembrane domain(s) (TM domain; red box). Multiple TM domains were found in HMOX2.