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Protein

Ribulose bisphosphate carboxylase small chain

Gene

cbbS

Organism
Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis nidulans)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

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.2 Publications

Catalytic activityi

2 3-phospho-D-glycerate + 2 H+ = D-ribulose 1,5-bisphosphate + CO2 + H2O.2 Publications
3-phospho-D-glycerate + 2-phosphoglycolate = D-ribulose 1,5-bisphosphate + O2.1 Publication

Kineticsi

The CO2/O2 specificity factor (tau) is 39.

  1. KM=39 µM for ribulose 1,5-bisphosphate1 Publication
  2. KM=173 µM for CO21 Publication
  1. Vmax=2.5 µmol/min/mg enzyme with CO2 as substrate1 Publication

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Lyase, Monooxygenase, Oxidoreductase

Keywords - Biological processi

Calvin cycle, Carbon dioxide fixation, Photosynthesis

Enzyme and pathway databases

SABIO-RKP04716.

Names & Taxonomyi

Protein namesi
Recommended name:
Ribulose bisphosphate carboxylase small chain (EC:4.1.1.392 Publications)
Short name:
RuBisCO small subunit
Gene namesi
Name:cbbS
Synonyms:rbcS
Ordered Locus Names:syc0129_c
OrganismiSynechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis nidulans)
Taxonomic identifieri269084 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeSynechococcus
Proteomesi
  • UP000001175 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemoved
ChainiPRO_00001986242 – 111Ribulose bisphosphate carboxylase small chainAdd BLAST110

Interactioni

Subunit structurei

8 large chains + 8 small chains.1 Publication2 Publications

Protein-protein interaction databases

DIPiDIP-6211N.
STRINGi269084.syc0129_c.

Structurei

Secondary structure

1111
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Turni14 – 17Combined sources4
Helixi23 – 36Combined sources14
Beta strandi39 – 46Combined sources8
Helixi68 – 81Combined sources14
Beta strandi85 – 93Combined sources9
Turni94 – 97Combined sources4
Beta strandi98 – 106Combined sources9

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1RBLX-ray2.20I/J/K/L/M/N/O/P2-110[»]
1RSCX-ray2.30I/J/K/L/M/N/O/P1-111[»]
1UZHX-ray2.20C/F/I/J/M/P/T/W12-58[»]
C/F/I/J/M/P/T/W102-110[»]
ProteinModelPortaliP04716.
SMRiP04716.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP04716.

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni12 – 21Hydrophobic10

Sequence similaritiesi

Belongs to the RuBisCO small chain family.Curated

Phylogenomic databases

eggNOGiCOG4451. LUCA.
HOGENOMiHOG000141332.
KOiK01602.
OMAiWEMWGNP.
OrthoDBiPOG091H13LH.

Family and domain databases

Gene3Di3.30.190.10. 1 hit.
InterProiIPR000894. RuBisCO_sc_dom.
[Graphical view]
PfamiPF00101. RuBisCO_small. 1 hit.
[Graphical view]
SMARTiSM00961. RuBisCO_small. 1 hit.
[Graphical view]
SUPFAMiSSF55239. SSF55239. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P04716-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSMKTLPKER RFETFSYLPP LSDRQIAAQI EYMIEQGFHP LIEFNEHSNP
60 70 80 90 100
EEFYWTMWKL PLFDCKSPQQ VLDEVRECRS EYGDCYIRVA GFDNIKQCQT
110
VSFIVHRPGR Y
Length:111
Mass (Da):13,333
Last modified:January 23, 2007 - v3
Checksum:iF854F73FA70BD57B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03220 Genomic DNA. Translation: CAA26973.1.
AP008231 Genomic DNA. Translation: BAD78319.1.
PIRiS07351. RKYCS.

Genome annotation databases

EnsemblBacteriaiBAD78319; BAD78319; syc0129_c.
KEGGisyc:syc0129_c.
PATRICi32485753. VBISynElo117686_0155.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03220 Genomic DNA. Translation: CAA26973.1.
AP008231 Genomic DNA. Translation: BAD78319.1.
PIRiS07351. RKYCS.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1RBLX-ray2.20I/J/K/L/M/N/O/P2-110[»]
1RSCX-ray2.30I/J/K/L/M/N/O/P1-111[»]
1UZHX-ray2.20C/F/I/J/M/P/T/W12-58[»]
C/F/I/J/M/P/T/W102-110[»]
ProteinModelPortaliP04716.
SMRiP04716.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-6211N.
STRINGi269084.syc0129_c.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAD78319; BAD78319; syc0129_c.
KEGGisyc:syc0129_c.
PATRICi32485753. VBISynElo117686_0155.

Phylogenomic databases

eggNOGiCOG4451. LUCA.
HOGENOMiHOG000141332.
KOiK01602.
OMAiWEMWGNP.
OrthoDBiPOG091H13LH.

Enzyme and pathway databases

SABIO-RKP04716.

Miscellaneous databases

EvolutionaryTraceiP04716.

Family and domain databases

Gene3Di3.30.190.10. 1 hit.
InterProiIPR000894. RuBisCO_sc_dom.
[Graphical view]
PfamiPF00101. RuBisCO_small. 1 hit.
[Graphical view]
SMARTiSM00961. RuBisCO_small. 1 hit.
[Graphical view]
SUPFAMiSSF55239. SSF55239. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiRBS_SYNP6
AccessioniPrimary (citable) accession number: P04716
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 13, 1987
Last sequence update: January 23, 2007
Last modified: November 2, 2016
This is version 125 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.