Ribulose bisphosphate carboxylase, large subunit, N-terminal (IPR017444)

Short name: RuBisCO_lsu_N

Domain relationships


Ribulose bisphosphate carboxylase (RuBisCO) [PMID: 6351728, PMID: 12221984] catalyses the initial step in Calvin's reductive pentose phosphate cycle in plants as well as purple and green bacteria. It consists of a large catalytic unit and a small subunit of undetermined function. In plants, the large subunit is coded by the chloroplast genome while the small subunit is encoded in the nuclear genome. Molecular activation of RuBisCO by CO2 involves the formation of a carbamate with the epsilon-amino group of a conserved lysine residue. This carbamate is stabilised by a magnesium ion. One of the ligands of the magnesium ion is an aspartic acid residue close to the active site lysine [PMID: 1969412].

GO terms

Biological Process

GO:0015977 carbon fixation

Molecular Function

GO:0000287 magnesium ion binding
GO:0016984 ribulose-bisphosphate carboxylase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.