O98946 (RBS_DETCO) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Ribulose bisphosphate carboxylase small chain
Short name=RuBisCO small subunit
EC=4.1.1.39

Gene names

Name:

rbcS

Encoded on

Plastid; Chloroplast

Organism

Detonula confervacea (Marine diatom)

Taxonomic identifier

83371 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Stramenopiles › Bacillariophyta › Coscinodiscophyceae › Thalassiosirophycidae › Thalassiosirales › Thalassiosiraceae › Detonula

Protein attributes

Sequence length	139 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	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.
Catalytic activity	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.
Subunit structure	8 large chains + 8 small chains.
Subcellular location	Plastid › chloroplast.
Miscellaneous	In this alga, in contrast to plants, the small subunit is encoded in the chloroplast.
Sequence similarities	Belongs to the RuBisCO small chain family.

Ontologies

Keywords
Biological process	Calvin cycle Carbon dioxide fixation Photorespiration Photosynthesis
Cellular component	Chloroplast Plastid
Molecular function	Lyase Monooxygenase Oxidoreductase
Gene Ontology (GO)
Biological_process	photorespiration Inferred from electronic annotation. Source: UniProtKB-KW reductive pentose-phosphate cycle Inferred from electronic annotation. Source: UniProtKB-KW
Cellular_component	chloroplast Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	monooxygenase activity Inferred from electronic annotation. Source: UniProtKB-KW ribulose-bisphosphate carboxylase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 139	139	Ribulose bisphosphate carboxylase small chain		PRO_0000198596

Sequences

	Sequence		Length	Mass (Da)
	O98946 [UniParc]. Last modified May 1, 1999. Version 1. Checksum: 1D152D13A7BAB194	FASTA	139	15,813
	10 20 30 40 50 60 MRLTQGCFSF LPDLTDEQIE KQVACAMSRG LAMNVEWTDD PHPRNNYWEL WGLPLFDIKD 70 80 90 100 110 120 PATVMFELNE ARKSCAAGYI RMNAFDASYG TESCVMSFIT NRPVSEPGFY LDRTEGVGRQ 130 IVYSIKSYSV QANPEGSRY

References

[1]	"Structure and function study of ribulose-1,5-bisphosphate carboxylase/oxygenase of the marine diatom, Detonula confervacea." Tomizawa K. Submitted (SEP-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	AB018006 Genomic DNA. Translation: BAA75793.1.
3D structure databases
ProteinModelPortal	O98946.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
Gene3D	3.30.190.10. 1 hit.
InterPro	IPR000894. RuBisCO_sc_dom. [Graphical view]
Pfam	PF00101. RuBisCO_small. 1 hit. [Graphical view]
SUPFAM	SSF55239. RuBisCO_small. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RBS_DETCO

Accession

Primary (citable) accession number: O98946

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 1, 2001
Last sequence update:	May 1, 1999
Last modified:	March 6, 2013
This is version 54 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)