HAMAP rule MF_00860

Accession	MF_00860
Dates	8-DEC-2020 (Created) 14-DEC-2020 (Last updated, Version 2)

Name	RuBisCO_S_euk

Scope

Eukaryota

Templates

P69249 (RBS_TOBAC); Q43832 (RBS2_SPIOL): [Recover all]

Triggered by

HAMAP; MF_00859 (Get profile general information and statistics)

Identifier

RBS

Protein name

RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic; Short=RuBisCO small subunit;

Gene name

RBCS

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. Although the small subunit is not catalytic it is essential for maximal activity.
Subunit	Heterohexadecamer of 8 large and 8 small subunits.
Subcellular location	Plastid, chloroplast.
Miscellaneous	The basic functional RuBisCO is composed of a large chain homodimer in a 'head-to-tail' conformation. In form I RuBisCO this homodimer is arranged in a barrel-like tetramer with the small subunits forming a tetrameric 'cap' on each end of the 'barrel'.

Miscellaneous

This protein is expected to contain an N-terminal transit peptide but none has been predicted.

Similarity

Belongs to the RuBisCO small chain family.

Calvin cycle
Carbon dioxide fixation
Chloroplast
Photorespiration
Photosynthesis
Plastid

GO:0015977; Biological process: carbon fixation.
GO:0016984; Molecular function: ribulose-bisphosphate carboxylase activity.
GO:0019253; Biological process: reductive pentose-phosphate cycle.
GO:0009507; Cellular component: chloroplast.

Pfam	PF00101; RuBisCO_small; 0-1;
	PF12338; RbcS; 0-1;

General

TransitC; -; 0-1; trigger=yes;

Size range	99-200 amino acids
Related rules	None
Fusion	None

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