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Protein

Ribulose bisphosphate carboxylase small chain 3B, chloroplastic

Gene

RBCS-3B

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: -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

Miscellaneous

There are four genes coding for RBS in Arabidopsis thaliana.

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

Enzyme and pathway databases

BioCyciMetaCyc:AT5G38410-MONOMER

Names & Taxonomyi

Protein namesi
Recommended name:
Ribulose bisphosphate carboxylase small chain 3B, chloroplastic (EC:4.1.1.39)
Short name:
RuBisCO small subunit 3B
Gene namesi
Name:RBCS-3B
Synonyms:ATS3B
Ordered Locus Names:At5g38410
ORF Names:MXI10.13
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 5

Organism-specific databases

AraportiAT5G38410

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

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 55ChloroplastSequence analysisAdd BLAST55
ChainiPRO_000003146656 – 181Ribulose bisphosphate carboxylase small chain 3B, chloroplasticAdd BLAST126

Proteomic databases

PaxDbiP10798
PRIDEiP10798

2D gel databases

SWISS-2DPAGEiP99057

PTM databases

iPTMnetiP10798

Expressioni

Gene expression databases

ExpressionAtlasiP10798 baseline and differential
GenevisibleiP10798 AT

Interactioni

Subunit structurei

8 large chains + 8 small chains.

GO - Molecular functioni

  • protein domain specific binding Source: CAFA

Protein-protein interaction databases

BioGridi190796 interactors.
IntActiP10798 5 interactors.
STRINGi3702.AT5G38410.3

Structurei

3D structure databases

ProteinModelPortaliP10798
SMRiP10798
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the RuBisCO small chain family.Curated

Keywords - Domaini

Transit peptide

Phylogenomic databases

eggNOGiENOG410IM2H Eukaryota
COG4451 LUCA
HOGENOMiHOG000141332
InParanoidiP10798
KOiK01602
PhylomeDBiP10798

Family and domain databases

Gene3Di3.30.190.101 hit
InterProiView protein in InterPro
IPR024681 RuBisCO_sc
IPR000894 RuBisCO_sc_dom
IPR024680 RuBisCO_ssu_N
IPR036385 RuBisCO_ssu_sf
PfamiView protein in Pfam
PF12338 RbcS, 1 hit
PF00101 RuBisCO_small, 1 hit
PRINTSiPR00152 RUBISCOSMALL
SMARTiView protein in SMART
SM00961 RuBisCO_small, 1 hit
SUPFAMiSSF55239 SSF55239, 1 hit

Sequencei

Sequence statusi: Complete.

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

This entry describes 1 isoform i produced by alternative splicing. AlignAdd to basket

Note: A number of isoforms are produced. According to EST sequences.
Isoform 1 (identifier: P10798-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MASSMLSSAA VVTSPAQATM VAPFTGLKSS AAFPVTRKTN KDITSIASNG
60 70 80 90 100
GRVSCMKVWP PIGKKKFETL SYLPDLSDVE LAKEVDYLLR NKWIPCVEFE
110 120 130 140 150
LEHGFVYREH GNTPGYYDGR YWTMWKLPLF GCTDSAQVLK EVEECKKEYP
160 170 180
GAFIRIIGFD NTRQVQCISF IAYKPPSFTE A
Length:181
Mass (Da):20,284
Last modified:January 23, 2002 - v2
Checksum:i9A5688A9D055254D
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti47A → T in CAA32702 (Ref. 1) Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X14564 Genomic DNA Translation: CAA32702.1
AB005248 Genomic DNA Translation: BAB09353.1
CP002688 Genomic DNA Translation: AED94311.1
AF360124 mRNA Translation: AAK25834.1
AY054552 mRNA Translation: AAK96743.1
AY051025 mRNA Translation: AAK93702.1
AF410314 mRNA Translation: AAK95300.1
AF462822 mRNA Translation: AAL58912.1
AY064686 mRNA Translation: AAL47390.1
AY098970 mRNA Translation: AAM19980.1
BT000721 mRNA Translation: AAN31863.1
PIRiS03719 RKMUB3
RefSeqiNP_198657.1, NM_123202.4 [P10798-1]
UniGeneiAt.20381
At.24772
At.46639
At.49098
At.49366
At.70032
At.70053
At.71313
At.74604
At.75410
At.75674

Genome annotation databases

EnsemblPlantsiAT5G38410.1; AT5G38410.1; AT5G38410 [P10798-1]
GeneIDi833828
GrameneiAT5G38410.1; AT5G38410.1; AT5G38410 [P10798-1]
KEGGiath:AT5G38410

Keywords - Coding sequence diversityi

Alternative splicing

Similar proteinsi

Entry informationi

Entry nameiRBS3B_ARATH
AccessioniPrimary (citable) accession number: P10798
Secondary accession number(s): Q9FF21
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: January 23, 2002
Last modified: April 25, 2018
This is version 155 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome