UniProt functional annotation for P23756

UniProt code: P23756.

Organism: Galdieria sulphuraria (Red alga).
Taxonomy: Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Galdieria.
 
Function: 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. Both reactions occur simultaneously and in competition at the same active site (By similarity).
 
Catalytic activity: 2 3-phospho-D-glycerate + 2 H(+) = D-ribulose 1,5-bisphosphate + CO(2) + H(2)O.
Catalytic activity: 3-phospho-D-glycerate + 2-phosphoglycolate = D-ribulose 1,5-bisphosphate + O(2).
Subunit: 8 large chains + 8 small chains.
Subcellular location: Plastid, chloroplast.
Miscellaneous: In this alga, in contrast to plants, the small subunit is encoded in the chloroplast.
Similarity: Belongs to the RuBisCO small chain family.

Annotations taken from UniProtKB at the EBI.