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Protein

Ribulose bisphosphate carboxylase small chain

Gene

rbcS

Organism
Detonula confervacea (Marine diatom)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

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 (By similarity).By similarity

Miscellaneous

In this alga, in contrast to plants, the small subunit is encoded in the chloroplast.

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 processCalvin cycle, Carbon dioxide fixation, Photorespiration, Photosynthesis

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
Encoded oniPlastid; Chloroplast
OrganismiDetonula confervacea (Marine diatom)
Taxonomic identifieri83371 [NCBI]
Taxonomic lineageiEukaryotaStramenopilesBacillariophytaCoscinodiscophyceaeThalassiosirophycidaeThalassiosiralesThalassiosiraceaeDetonula

Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Chloroplast, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001985961 – 139Ribulose bisphosphate carboxylase small chainAdd BLAST139

Interactioni

Subunit structurei

8 large chains + 8 small chains.

Structurei

3D structure databases

ProteinModelPortaliO98946.
SMRiO98946.
ModBaseiSearch...
MobiDBiSearch...

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
IPR000894. RuBisCO_sc_dom.
PfamiView protein in Pfam
PF00101. RuBisCO_small. 1 hit.
SMARTiView protein in SMART
SM00961. RuBisCO_small. 1 hit.
SUPFAMiSSF55239. SSF55239. 1 hit.

Sequencei

Sequence statusi: Complete.

O98946-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRLTQGCFSF LPDLTDEQIE KQVACAMSRG LAMNVEWTDD PHPRNNYWEL
60 70 80 90 100
WGLPLFDIKD PATVMFELNE ARKSCAAGYI RMNAFDASYG TESCVMSFIT
110 120 130
NRPVSEPGFY LDRTEGVGRQ IVYSIKSYSV QANPEGSRY
Length:139
Mass (Da):15,813
Last modified:May 1, 1999 - v1
Checksum:i1D152D13A7BAB194
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB018006 Genomic DNA. Translation: BAA75793.1.

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.

Entry informationi

Entry nameiRBS_DETCO
AccessioniPrimary (citable) accession number: O98946
Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 1, 2001
Last sequence update: May 1, 1999
Last modified: March 15, 2017
This is version 65 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families