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Protein

Ribulose bisphosphate carboxylase small chain, chloroplastic

Gene

RBCS

Organism
Helianthus annuus (Common sunflower)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript 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 (By similarity).By similarity

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

Complete GO annotation...

Keywords - Molecular functioni

Lyase, Monooxygenase, Oxidoreductase

Keywords - Biological processi

Calvin cycle, Carbon dioxide fixation, Photorespiration, Photosynthesis

Names & Taxonomyi

Protein namesi
Recommended name:
Ribulose bisphosphate carboxylase small chain, chloroplastic (EC:4.1.1.39)
Short name:
RuBisCO small subunit
Gene namesi
Name:RBCS
OrganismiHelianthus annuus (Common sunflower)
Taxonomic identifieri4232 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridscampanulidsAsteralesAsteraceaeAsteroideaeHeliantheae allianceHeliantheaeHelianthus

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transit peptidei1 – 5555ChloroplastBy similarityAdd
BLAST
Chaini56 – 178123Ribulose bisphosphate carboxylase small chain, chloroplasticPRO_0000031507Add
BLAST

Interactioni

Subunit structurei

8 large chains + 8 small chains.

Structurei

3D structure databases

ProteinModelPortaliP08705.
SMRiP08705. Positions 56-178.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the RuBisCO small chain family.Curated

Keywords - Domaini

Transit peptide

Family and domain databases

Gene3Di3.30.190.10. 1 hit.
InterProiIPR024681. RuBisCO_sc.
IPR000894. RuBisCO_sc_dom.
IPR024680. RuBisCO_ssu_N.
[Graphical view]
PfamiPF12338. RbcS. 1 hit.
PF00101. RuBisCO_small. 1 hit.
[Graphical view]
PRINTSiPR00152. RUBISCOSMALL.
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.

P08705-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MASISSSVAT VSRTAPAQAN MVAPFTGLKS NAAFPTTKKA NDFSTLPSNG
60 70 80 90 100
GRVQCMKVWP PLGLKKYETL SYLPPLTETQ LAKEVDYLLR KKWVPCLEFE
110 120 130 140 150
LEHGFVYREN ARSPGYYDGR YWTMWKLPMF GCTDSAQVMK ELAECKKEYP
160 170
QAWIRIIGFD NVRQVQCIMF IASRPDGY
Length:178
Mass (Da):20,211
Last modified:January 1, 1988 - v1
Checksum:iA9D1AAA930D4586D
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X05079 mRNA. Translation: CAA28737.1.
Y00431 Genomic DNA. Translation: CAA68490.1.
PIRiA26852. RKFSS.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X05079 mRNA. Translation: CAA28737.1.
Y00431 Genomic DNA. Translation: CAA68490.1.
PIRiA26852. RKFSS.

3D structure databases

ProteinModelPortaliP08705.
SMRiP08705. Positions 56-178.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di3.30.190.10. 1 hit.
InterProiIPR024681. RuBisCO_sc.
IPR000894. RuBisCO_sc_dom.
IPR024680. RuBisCO_ssu_N.
[Graphical view]
PfamiPF12338. RbcS. 1 hit.
PF00101. RuBisCO_small. 1 hit.
[Graphical view]
PRINTSiPR00152. RUBISCOSMALL.
SMARTiSM00961. RuBisCO_small. 1 hit.
[Graphical view]
SUPFAMiSSF55239. SSF55239. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiRBS_HELAN
AccessioniPrimary (citable) accession number: P08705
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 1, 1988
Last sequence update: January 1, 1988
Last modified: May 11, 2016
This is version 87 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

  1. 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.