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Protein

Ribulose bisphosphate carboxylase small chain 1B, chloroplastic

Gene

RBCS-1B

Organism
Arabidopsis thaliana (Mouse-ear cress)
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 (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

  • photorespiration Source: UniProtKB-KW
  • reductive pentose-phosphate cycle Source: UniProtKB-KW
  • response to blue light Source: TAIR
  • response to far red light Source: TAIR
  • response to red light Source: TAIR

Keywordsi

Molecular functionLyase, Monooxygenase, Oxidoreductase
Biological processCalvin cycle, Carbon dioxide fixation, Photorespiration, Photosynthesis

Enzyme and pathway databases

BioCyciMetaCyc:AT5G38430-MONOMER

Names & Taxonomyi

Protein namesi
Recommended name:
Ribulose bisphosphate carboxylase small chain 1B, chloroplastic (EC:4.1.1.39)
Short name:
RuBisCO small subunit 1B
Gene namesi
Name:RBCS-1B
Synonyms:ATS1B
Ordered Locus Names:At5g38430
ORF Names:MXI10.15
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 5

Organism-specific databases

AraportiAT5G38430
TAIRilocus:2177406 AT5G38430

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, Membrane, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 55ChloroplastSequence analysisAdd BLAST55
ChainiPRO_000003146456 – 181Ribulose bisphosphate carboxylase small chain 1B, chloroplasticAdd BLAST126

Proteomic databases

PaxDbiP10796
PRIDEiP10796

2D gel databases

World-2DPAGEi0003:P10796

PTM databases

iPTMnetiP10796

Expressioni

Gene expression databases

ExpressionAtlasiP10796 baseline and differential
GenevisibleiP10796 AT

Interactioni

Subunit structurei

8 large chains + 8 small chains (PubMed:29372894). Interacts with RBCX2 (PubMed:21922322).2 Publications

GO - Molecular functioni

  • protein domain specific binding Source: CAFA

Protein-protein interaction databases

BioGridi19081, 6 interactors
IntActiP10796, 3 interactors
STRINGi3702.AT5G38430.1

Structurei

Secondary structure

1181
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi61 – 63Combined sources3
Turni69 – 72Combined sources4
Helixi78 – 90Combined sources13
Beta strandi94 – 102Combined sources9
Beta strandi123 – 126Combined sources4
Helixi135 – 148Combined sources14
Beta strandi152 – 160Combined sources9
Turni161 – 164Combined sources4
Beta strandi165 – 173Combined sources9

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5IU0X-ray1.50I/J1-181[»]
ProteinModelPortaliP10796
SMRiP10796
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
InParanoidiP10796
KOiK01602
OMAiNNRSPGY
OrthoDBiEOG09360OM1
PhylomeDBiP10796

Family and domain databases

Gene3Di3.30.190.10, 1 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.

P10796-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MASSMLSSAA VVTSPAQATM VAPFTGLKSS ASFPVTRKAN NDITSITSNG
60 70 80 90 100
GRVSCMKVWP PIGKKKFETL SYLPDLTDVE LAKEVDYLLR NKWIPCVEFE
110 120 130 140 150
LEHGFVYREH GNTPGYYDGR YWTMWKLPLF GCTDSAQVLK EVEECKKEYP
160 170 180
GAFIRIIGFD NTRQVQCISF IAYKPPSFTD A
Length:181
Mass (Da):20,286
Last modified:July 1, 1989 - v1
Checksum:i63D5E3BA93E0B6CA
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X14564 Genomic DNA Translation: CAA32700.1
AB005248 Genomic DNA Translation: BAB09355.1
CP002688 Genomic DNA Translation: AED94315.1
CP002688 Genomic DNA Translation: ANM69887.1
AF410283 mRNA Translation: AAK95269.1
AY143814 mRNA Translation: AAN28753.1
PIRiS03717 RKMUB1
RefSeqiNP_001318696.1, NM_001344249.1
NP_198659.1, NM_123204.4
UniGeneiAt.25361
At.25577
At.39706
At.46639
At.49098
At.70032
At.70053
At.73308

Genome annotation databases

EnsemblPlantsiAT5G38430.1; AT5G38430.1; AT5G38430
AT5G38430.2; AT5G38430.2; AT5G38430
GeneIDi833830
GrameneiAT5G38430.1; AT5G38430.1; AT5G38430
AT5G38430.2; AT5G38430.2; AT5G38430
KEGGiath:AT5G38430

Similar proteinsi

Entry informationi

Entry nameiRBS1B_ARATH
AccessioniPrimary (citable) accession number: P10796
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: July 1, 1989
Last modified: April 25, 2018
This is version 150 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, Complete proteome, Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families

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