Q56260 (RBS_THIDA) 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
Ordered Locus Names:	Tbd_2623

Organism

Thiobacillus denitrificans (strain ATCC 25259) [Complete proteome] [HAMAP]

Taxonomic identifier

292415 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Proteobacteria › Betaproteobacteria › Hydrogenophilales › Hydrogenophilaceae › Thiobacillus › Thiobacillus denitrificans

Protein attributes

Sequence length	118 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.
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
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 – 118	118	Ribulose bisphosphate carboxylase small chain		PRO_0000198628

Sequences

	Sequence		Length	Mass (Da)
	Q56260 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: 4A45CFDA4FC98F63	FASTA	118	13,608
	10 20 30 40 50 60 MSEVMDYKSR LSDPASRKFE TFSYLPAMNA ADIRKQVEYL VSKGWNPAIE HTEPEHLMDS 70 80 90 100 110 YWYMWKLPMF GETDIDRILG EAEACHKANP NNHVRLVGYD NFAQSQGAAM VIYRGKTV

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Deduced amino acid sequence, functional expression, and unique enzymatic properties of the form I and form II ribulose bisphosphate carboxylase/oxygenase from the chemoautotrophic bacterium Thiobacillus denitrificans." Hernandez J.M., Baker S.H., Lorbach S.C., Shively J.M., Tabita F.R. J. Bacteriol. 178:347-356(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"The genome sequence of the obligately chemolithoautotrophic, facultatively anaerobic bacterium Thiobacillus denitrificans." Beller H.R., Chain P.S., Letain T.E., Chakicherla A., Larimer F.W., Richardson P.M., Coleman M.A., Wood A.P., Kelly D.P. J. Bacteriol. 188:1473-1488(2006) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 25259.

Cross-references

Sequence databases
EMBL GenBank DDBJ	L42940 Genomic DNA. Translation: AAB70698.1. CP000116 Genomic DNA. Translation: AAZ98576.1.
RefSeq	YP_316381.1. NC_007404.1.
3D structure databases
ProteinModelPortal	Q56260.
ModBase	Search...
Protein-protein interaction databases
STRING	292415.Tbd_2623.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	AAZ98576; AAZ98576; Tbd_2623.
GeneID	3672352.
KEGG	tbd:Tbd_2623.
PATRIC	23971441. VBIThiDen82923_2607.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG4451.
HOGENOM	HOG000141332.
KO	K01602.
OMA	WNPAIEH.
ProtClustDB	CLSK917872.
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_THIDA

Accession

Primary (citable) accession number: Q56260
Secondary accession number(s): Q3SFN0

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 15, 1998
Last sequence update:	November 1, 1996
Last modified:	May 1, 2013
This is version 77 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program