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HAMAP rule MF_00859

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General rule information [?]

Accession MF_00859
Dates 8-DEC-2020 (Created)
17-FEB-2023 (Last updated, Version 5)
Name RuBisCO_S_bact
Scope(s) Bacteria
Cyanobacteriota
Pseudomonadota
Actinomycetota
Verrucomicrobiota
Plastid
Template(s) Q31NB2 (RBS_SYNE7); P04716 (RBS_SYNP6); P45686 (RBS_HALNC); P27998 (RBS_CERSP); P23756 (RBS_GALSU); [ Recover all ]
Triggered by
case c? <OC:Bacteria> or <OG:Plastid>
HAMAP; MF_00859 (Get profile general information and statistics)
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:Cyanobacteriota>
Gene name Name=cbbS; Synonyms=rbcS;
else case <OC:Eukaryota>
Gene name Name=rbcS;
else
Gene name Name=cbbS;
end case

Comments [?]

case <OG:Chloroplast> or <OC:Cyanobacteriota>
FUNCTIONRuBisCO 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
FUNCTIONRuBisCO 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
SUBUNITHeterohexadecamer of 8 large and 8 small subunits.
case <OC:Cyanobacteriota>
SUBCELLULAR LOCATIONCarboxysome.
end case
case <OC:Eukaryota>
SUBCELLULAR LOCATIONPlastid, chloroplast.
end case
MISCELLANEOUSThe 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'.
SIMILARITYBelongs to the RuBisCO small chain family.

Keywords [?]

Calvin cycle
Carbon dioxide fixation
case <OC:Cyanobacteriota>
Carboxysome
end case
case <OC:Eukaryota>
Chloroplast
end case
case <OG:Chloroplast> or <OC:Cyanobacteriota> or <Property:PHOTOSYN>
Photorespiration
Photosynthesis
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 <OCellular component:Cyanobacteriota>
GO:0031470; Cellular component:carboxysome
end case
case <OCellular component:Cyanobacteriota> or <OG:Chloroplast> or <Property:PHOTOSYN>
GO:0009507; Cellular component:chloroplast
end case

Cross-references [?]

Pfam PF00101; RuBisCO_small; 1;

Features [?]


Additional information [?]

Size range 85-200 amino acids
Related rules None
Fusion Nter: None Cter: None



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