COX6B (CYTOCHROME C OXIDASE 6B); cytochrome-c oxidase. similar to cytochrome c oxidase subunit 6b, putative [Arabidopsis thaliana] (TAIR:AT5G57815.1); similar to hypothetical protein OsI_011535 [Oryza sativa (indica cultivar-group)] (GB:EAY90302.1); similar to Os03g0390400 [Oryza sativa (japonica cultivar-group)] (GB:NP_001050275.1); contains InterPro domain Cytochrome c oxidase, subunit VIb; (InterPro:IPR003213)