P0A4S6 (RBS_SYNPW) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Ribulose bisphosphate carboxylase small chain
Short name=RuBisCO small subunit
EC=4.1.1.39

Gene names

Name:	cbbS
Synonyms:	rbcS
Ordered Locus Names:	SynWH7803_0679

Organism

Synechococcus sp. (strain WH7803) [Complete proteome] [HAMAP]

Taxonomic identifier

32051 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Cyanobacteria › Oscillatoriophycideae › Chroococcales › Synechococcus

Protein attributes

Sequence length	113 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

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 + CO2 + H2O. 3-phospho-D-glycerate + 2-phosphoglycolate = D-ribulose 1,5-bisphosphate + O2.
Subunit structure	8 large chains + 8 small chains.
Sequence similarities	Belongs to the RuBisCO small chain family.

Ontologies

Keywords
Biological process	Calvin cycle Carbon dioxide fixation Photosynthesis
Molecular function	Lyase Monooxygenase Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological_process	reductive pentose-phosphate cycle Inferred from electronic annotation. Source: UniProtKB-KW
Molecular_function	monooxygenase activity Inferred from electronic annotation. Source: UniProtKB-KW ribulose-bisphosphate carboxylase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 113	113	Ribulose bisphosphate carboxylase small chain		PRO_0000198625

Sequences

	Sequence		Length	Mass (Da)
	P0A4S6 [UniParc]. Last modified March 15, 2005. Version 1. Checksum: 8929415D336391F4	FASTA	113	12,943
	10 20 30 40 50 60 MPFQSTVGDY QTVATLETFG FLPPMTQDEI YDQIAYIIAQ GWSPLVEHVH PSNSMATYWS 70 80 90 100 110 YWKLPFFGEK DLNVVVSELE ACHRAYPDHH VRIVGYDAYT QSQGACFVVF EGR

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Regulation, unique gene organization, and unusual primary structure of carbon fixation genes from a marine phycoerythrin-containing cyanobacterium." Watson G.M., Tabita F.R. Plant Mol. Biol. 32:1103-1115(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	Genoscope Submitted (MAY-2006) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: WH7803.

Cross-references

Sequence databases
EMBL GenBank DDBJ	U46156 Genomic DNA. Translation: AAB48081.1. CT971583 Genomic DNA. Translation: CAK23105.1.
RefSeq	YP_001224402.1. NC_009481.1.
3D structure databases
ProteinModelPortal	P0A4S6.
SMR	P0A4S6. Positions 7-112.
ModBase	Search...
Protein-protein interaction databases
STRING	32051.SynWH7803_0679.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	CAK23105; CAK23105; SynWH7803_0679.
GeneID	5146393.
KEGG	syx:SynWH7803_0679.
PATRIC	23827461. VBISynSp43824_0696.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG4451.
HOGENOM	HOG000141332.
KO	K01602.
OMA	WNPAIEH.
ProtClustDB	CLSK919276.
Family and domain databases
Gene3D	3.30.190.10. 1 hit.
InterPro	IPR000894. RuBisCO_sc_dom. [Graphical view]
Pfam	PF00101. RuBisCO_small. 1 hit. [Graphical view]
SMART	SM00961. RuBisCO_small. 1 hit. [Graphical view]
SUPFAM	SSF55239. RuBisCO_small. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RBS_SYNPW

Accession

Primary (citable) accession number: P0A4S6
Secondary accession number(s): A5GJJ0, P96487

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 15, 2005
Last sequence update:	March 15, 2005
Last modified:	May 1, 2013
This is version 46 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program