Ribulose bisphosphate carboxylase small subunit

UniProtKB accession:  P23756

Grouped By:  Matching UniProtKB accession

UniProtKB description:  RuBisCO catalyzes two reactions: the carboxylation of D-ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate in the photorespiration process. Both reactions occur simultaneously and in competition at the same active site. Although the small subunit is not catalytic it is essential for maximal activity. Carbon dioxide and oxygen bind in the same pocket of the enzyme in a similar manner (PubMed:23112176).