Q44178 (RBS_SYNP2) 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:	SYNPCC7002_A1796

Organism

Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum quadruplicatum) [Complete proteome] [HAMAP]

Taxonomic identifier

32049 [NCBI]

Taxonomic lineage

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

Protein attributes

Sequence length	111 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 – 111	111	Ribulose bisphosphate carboxylase small chain		PRO_0000198623

Sequences

	Sequence		Length	Mass (Da)
	Q44178 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: 182FA0950AC8EF96	FASTA	111	13,212
	10 20 30 40 50 60 MKTLPKEKRY ETLSYLPPLS DQQIARQVQY MMDQGYIPGI EFEKDPTPEL HHWTLWKLPL 70 80 90 100 110 FNASSAQEVL NEVRECRSEY SDCYIRVVGF DNIKQCQTVS FIVYKPNQTR Y

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	Akiyama H., Kanai S., Hirano M., Sugimoto M., Kiyohara M. Submitted (JUN-1994) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Complete sequence of Synechococcus sp. PCC 7002." Li T., Zhao J., Zhao C., Liu Z., Zhao F., Marquardt J., Nomura C.T., Persson S., Detter J.C., Richardson P.M., Lanz C., Schuster S.C., Wang J., Li S., Huang X., Cai T., Yu Z., Luo J., Zhao J., Bryant D.A. Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 27264 / PCC 7002 / PR-6.

Cross-references

Sequence databases
EMBL GenBank DDBJ	D13971 Genomic DNA. Translation: BAA03078.1. CP000951 Genomic DNA. Translation: ACA99784.1.
RefSeq	YP_001735040.1. NC_010475.1.
3D structure databases
ProteinModelPortal	Q44178.
SMR	Q44178. Positions 1-108.
ModBase	Search...
Protein-protein interaction databases
STRING	32049.SYNPCC7002_A1796.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	ACA99784; ACA99784; SYNPCC7002_A1796.
GeneID	6056501.
KEGG	syp:SYNPCC7002_A1796.
PATRIC	23818222. VBISynSp37135_2052.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG4451.
HOGENOM	HOG000141332.
KO	K01602.
OMA	WAVNIEF.
ProtClustDB	CLSK893428.
Enzyme and pathway databases
BioCyc	SSP32049:GKF7-1797-MONOMER.
Family and domain databases
Gene3D	3.30.190.10. 1 hit.
InterPro	IPR024681. RuBisCO_sc. IPR000894. RuBisCO_sc_dom. [Graphical view]
Pfam	PF00101. RuBisCO_small. 1 hit. [Graphical view]
PRINTS	PR00152. RUBISCOSMALL.
SMART	SM00961. RuBisCO_small. 1 hit. [Graphical view]
SUPFAM	SSF55239. RuBisCO_small. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RBS_SYNP2

Accession

Primary (citable) accession number: Q44178
Secondary accession number(s): B1XPS0

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	November 1, 1996
Last modified:	May 29, 2013
This is version 72 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program