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Annotation rule MF_00859
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General rule information [?]

Accession MF_00859
Dates 8-DEC-2020 (Created)
14-DEC-2020 (Last updated, Version 2)
Name RuBisCO_S_bact
Scope
Bacteria; Cyanobacteria
Bacteria; Proteobacteria
Bacteria; Actinobacteria
Bacteria; Verrucomicrobia
Plastid
Templates Q31NB2 (RBS_SYNE7); P04716 (RBS_SYNP6); P45686 (RBS_HALNC); P27998 (RBS_RHOSH); P23756 (RBS_GALSU): [Recover all]
case <OC:Bacteria> or <OG:Plastid>
end case


Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
RBS
Protein name
RecName: Full=Ribulose bisphosphate carboxylase small subunit;
Short=RuBisCO small subunit;
case <OC:Cyanobacteria>
Gene name
cbbS, rbcS
else case <OC:Eukaryota>
Gene name
rbcS
else
Gene name
cbbS
end case

Comments [?]

case <OG:Chloroplast> or <OC:Cyanobacteria>
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 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.
else
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.
end case
Subunit Heterohexadecamer of 8 large and 8 small subunits.
case <OC:Cyanobacteria>
Subcellular location Carboxysome.
end case
case <OC:Eukaryota>
Subcellular location Plastid, chloroplast.
end case
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'.
Similarity Belongs to the RuBisCO small chain family.

Keywords [?]

case <OC:Cyanobacteria>
end case
case <OC:Eukaryota>
end case
case <OG:Chloroplast> or <OC:Cyanobacteria> or <Property:PHOTOSYN>
end case

Gene Ontology [?]

GO:0015977; Biological process: carbon fixation.
GO:0016984; Molecular function: ribulose-bisphosphate carboxylase activity.
GO:0019253; Biological process: reductive pentose-phosphate cycle.
case <OC:Cyanobacteria>
GO:0031470; Cellular component: carboxysome.
end case
case <OC:Cyanobacteria> or <OG:Chloroplast> or <Property:PHOTOSYN>
GO:0009507; Cellular component: chloroplast.
end case

Cross-references [?]

Pfam PF00101; RuBisCO_small; 1;

Additional information [?]

Size range 85-200 amino acids
Related rules None
Fusion None