P06514 (RBS_NOSS1) 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:	alr1526

Organism

Nostoc sp. (strain PCC 7120 / UTEX 2576) [Complete proteome] [HAMAP]

Taxonomic identifier

103690 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Cyanobacteria › Nostocales › Nostocaceae › Nostoc

Protein attributes

Sequence length	109 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 – 109	109	Ribulose bisphosphate carboxylase small chain		PRO_0000198610

Sequences

	Sequence		Length	Mass (Da)
	P06514 [UniParc]. Last modified January 1, 1988. Version 1. Checksum: 00AF32BB0A703595	FASTA	109	12,827
	10 20 30 40 50 60 MQTLPKERRY ETLSYLPPLT DVQIEKQVQY ILSQGYIPAV EFNEVSEPTE LYWTLWKLPL 70 80 90 100 FGAKTSREVL AEVQSCRSQY PGHYIRVVGF DNIKQCQILS FIVHKPSRY

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Cotranscription of genes encoding the small and large subunits of ribulose-1,5-bisphosphate carboxylase in the cyanobacterium Anabaena 7120." Nierzwicki-Bauer S.A., Curtis S.E., Haselkorn R. Proc. Natl. Acad. Sci. U.S.A. 81:5961-5965(1984) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Complete genomic sequence of the filamentous nitrogen-fixing cyanobacterium Anabaena sp. strain PCC 7120." Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A., Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M., Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M. , Takazawa M., Yamada M., Yasuda M., Tabata S. DNA Res. 8:205-213(2001) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: PCC 7120 / UTEX 2576.

Cross-references

Sequence databases
EMBL GenBank DDBJ	J01540 Genomic DNA. Translation: AAA22042.1. L02520 Genomic DNA. Translation: AAA22025.1. L02521 Genomic DNA. Translation: AAA22026.1. L02522 Genomic DNA. Translation: AAA22030.1. BA000019 Genomic DNA. Translation: BAB77892.1.
PIR	AH1996.
RefSeq	NP_485566.1. NC_003272.1.
3D structure databases
ProteinModelPortal	P06514.
SMR	P06514. Positions 1-108.
ModBase	Search...
Protein-protein interaction databases
STRING	103690.alr1526.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	BAB77892; BAB77892; BAB77892.
GeneID	1105118.
KEGG	ana:alr1526.
PATRIC	22773058. VBINosSp37423_2012.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG4451.
KO	K01602.
OMA	WAVNIEF.
ProtClustDB	CLSK893428.
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_NOSS1

Accession

Primary (citable) accession number: P06514

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 1, 1988
Last sequence update:	January 1, 1988
Last modified:	May 1, 2013
This is version 89 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program