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Protein

Ribulose bisphosphate carboxylase small chain

Gene

RBCS

Organism
Spinacia oleracea (Spinach)
Status
Reviewed-Annotation score: -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.

Catalytic activityi

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.

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionLyase, Monooxygenase, Oxidoreductase
Biological processCarbon dioxide fixation, Photorespiration, Photosynthesis

Enzyme and pathway databases

BRENDAi4.1.1.39 5812

Names & Taxonomyi

Protein namesi
Recommended name:
Ribulose bisphosphate carboxylase small chain (EC:4.1.1.39)
Short name:
RuBisCO small subunit
Gene namesi
Name:RBCS
OrganismiSpinacia oleracea (Spinach)
Taxonomic identifieri3562 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeCaryophyllalesChenopodiaceaeChenopodioideaeAnserineaeSpinacia

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Chloroplast, Plastid

Pathology & Biotechi

Protein family/group databases

Allergomei3814 Spi o RuBisCO

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001985891 – 123Ribulose bisphosphate carboxylase small chainAdd BLAST123

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei1Methionine derivative1

Proteomic databases

PRIDEiP00870

Interactioni

Subunit structurei

8 large chains + 8 small chains.

Protein-protein interaction databases

DIPiDIP-27640N
IntActiP00870, 1 interactor

Structurei

Secondary structure

1123
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

ProteinModelPortaliP00870
SMRiP00870
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP00870

Family & Domainsi

Sequence similaritiesi

Belongs to the RuBisCO small chain family.Curated

Family and domain databases

Gene3Di3.30.190.10, 1 hit
InterProiView protein in InterPro
IPR024681 RuBisCO_sc
IPR000894 RuBisCO_sc_dom
IPR036385 RuBisCO_ssu_sf
PfamiView protein in Pfam
PF00101 RuBisCO_small, 1 hit
PRINTSiPR00152 RUBISCOSMALL
SMARTiView protein in SMART
SM00961 RuBisCO_small, 1 hit
SUPFAMiSSF55239 SSF55239, 1 hit

Sequencei

Sequence statusi: Complete.

P00870-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MQVWPPLGLK KFETLSYLPP LTTEQLLAEV NYLLVKGWIP PLEFEVKDGF
60 70 80 90 100
VYREHDKSPG YYDGRYWTMW KLPMFGGTDP AQVVNEVEEV KKAPPDAFVR
110 120
FIGFNDKREV QCISFIAYKP AGY
Length:123
Mass (Da):14,283
Last modified:July 21, 1986 - v1
Checksum:iDC727DD6EF1EF59B
GO

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural varianti94P → Y. 1

Sequence databases

PIRiA01089 RKSPS

Similar proteinsi

Cross-referencesi

Web resourcesi

Protein Spotlight

The Plant Kingdom's sloth - Issue 38 of September 2003

Sequence databases

PIRiA01089 RKSPS

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1RBOX-ray2.30C/F/I/S1-123[»]
1RCOX-ray2.30C/F/I/M/P/S/T/W1-123[»]
1RCXX-ray2.40C/F/I/M/P/S/T/W1-123[»]
1RXOX-ray2.20C/F/I/S1-123[»]
8RUCX-ray1.60I/J/K/L1-123[»]
ProteinModelPortaliP00870
SMRiP00870
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-27640N
IntActiP00870, 1 interactor

Protein family/group databases

Allergomei3814 Spi o RuBisCO

Proteomic databases

PRIDEiP00870

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Enzyme and pathway databases

BRENDAi4.1.1.39 5812

Miscellaneous databases

EvolutionaryTraceiP00870

Family and domain databases

Gene3Di3.30.190.10, 1 hit
InterProiView protein in InterPro
IPR024681 RuBisCO_sc
IPR000894 RuBisCO_sc_dom
IPR036385 RuBisCO_ssu_sf
PfamiView protein in Pfam
PF00101 RuBisCO_small, 1 hit
PRINTSiPR00152 RUBISCOSMALL
SMARTiView protein in SMART
SM00961 RuBisCO_small, 1 hit
SUPFAMiSSF55239 SSF55239, 1 hit
ProtoNetiSearch...

Entry informationi

Entry nameiRBS1_SPIOL
AccessioniPrimary (citable) accession number: P00870
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: July 21, 1986
Last modified: November 22, 2017
This is version 112 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. Protein Spotlight
    Protein Spotlight articles and cited UniProtKB/Swiss-Prot entries
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

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