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Protein

Ribulose bisphosphate carboxylase small chain 2, chloroplastic

Gene

RBCS-2

Organism
Chlamydomonas reinhardtii (Chlamydomonas smithii)
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.1 Publication

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 1318

Names & Taxonomyi

Protein namesi
Recommended name:
Ribulose bisphosphate carboxylase small chain 2, chloroplastic (EC:4.1.1.39)
Short name:
RuBisCO small subunit 2
Gene namesi
Name:RBCS-2
OrganismiChlamydomonas reinhardtii (Chlamydomonas smithii)
Taxonomic identifieri3055 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeChlorophytaChlorophyceaeChlamydomonadalesChlamydomonadaceaeChlamydomonas

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 – 45ChloroplastSequence analysisAdd BLAST45
ChainiPRO_000003147346 – 185Ribulose bisphosphate carboxylase small chain 2, chloroplasticAdd BLAST140

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei46N-methylmethionine1 Publication1

Keywords - PTMi

Methylation

PTM databases

iPTMnetiP08475

Interactioni

Subunit structurei

8 large chains + 8 small chains.1 Publication

Structurei

Secondary structure

1185
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Turni59 – 62Combined sources4
Helixi68 – 80Combined sources13
Beta strandi84 – 90Combined sources7
Helixi92 – 94Combined sources3
Helixi100 – 104Combined sources5
Helixi131 – 144Combined sources14
Beta strandi148 – 156Combined sources9
Turni157 – 160Combined sources4
Beta strandi161 – 169Combined sources9
Helixi180 – 182Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1IR2X-ray1.841/2/3/4/5/6/7/8/I/J/K/L/M/N/O/P46-185[»]
1UZHX-ray2.20C/F/I/J/M/P/T/W-[»]
ProteinModelPortaliP08475
SMRiP08475
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP08475

Family & Domainsi

Sequence similaritiesi

Belongs to the RuBisCO small chain family.Curated

Keywords - Domaini

Transit peptide

Phylogenomic databases

eggNOGiENOG410IM2H Eukaryota
COG4451 LUCA
OMAiCMAFLIQ

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.

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

P08475-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAAVIAKSSV SAAVARPARS SVRPMAALKP AVKAAPVAAP AQANQMMVWT
60 70 80 90 100
PVNNKMFETF SYLPPLSDEQ IAAQVDYIVA NGWIPCLEFA ESDKAYVSNE
110 120 130 140 150
SAIRFGSVSC LYYDNRYWTM WKLPMFGCRD PMQVLREIVA CTKAFPDAYV
160 170 180
RLVAFDNQKQ VQIMGFLVQR PKSARDWQPA NKRSV
Length:185
Mass (Da):20,647
Last modified:August 1, 1988 - v1
Checksum:iE19A3627EF484F50
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X04472 Genomic DNA Translation: CAA28160.1
PIRiB25785 RKKMS2

Genome annotation databases

EnsemblPlantsiEDO96901; EDO96901; CHLREDRAFT_108283
GrameneiEDO96901; EDO96901; CHLREDRAFT_108283

Similar proteinsi

Entry informationi

Entry nameiRBS2_CHLRE
AccessioniPrimary (citable) accession number: P08475
Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 1, 1988
Last sequence update: August 1, 1988
Last modified: April 25, 2018
This is version 118 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
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Main funding by: National Institutes of Health