O22024 (RBS_CYAME) 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

Cyanidioschyzon merolae (Red alga)

Taxonomic identifier

45157 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Rhodophyta › Bangiophyceae › Cyanidiales › Cyanidiaceae › Cyanidioschyzon

Protein attributes

Sequence length	138 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 – 138	138	Ribulose bisphosphate carboxylase small chain		PRO_0000198593

Sequences

	Sequence		Length	Mass (Da)
	O22024 [UniParc]. Last modified January 1, 1998. Version 1. Checksum: 584F64F1709104A8	FASTA	138	16,225
	10 20 30 40 50 60 MRVTQGTFCY LPDLTDEQIR KQIQYAINQG WAVSVEYTDD PHPRNSYWEM WGLPLFDVKD 70 80 90 100 110 120 PATIMFEVQE CRKQFPNHYI KVLAFNSTKG IESTALSFIV NRPANEPGFV LRRIESNDRV 130 QRYQIHSYAT EKPEGSRY

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Analysis of a plastid gene cluster reveals a close relationship between Cyanidioschyzon and Cyanidium." Ohta N., Sato N., Ueda K., Kuroiwa T. J. Plant Res. 110:235-245(1997) Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Complete sequence and analysis of the plastid genome of the unicellular red alga Cyanidioschyzon merolae." Ohta N., Matsuzaki M., Misumi O., Miyagishima S.-Y., Nozaki H., Tanaka K., Shin-i T., Kohara Y., Kuroiwa T. DNA Res. 10:67-77(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: 10D.

Cross-references

Sequence databases
EMBL GenBank DDBJ	D63675 Genomic DNA. Translation: BAA22820.1. AB002583 Genomic DNA. Translation: BAC76108.1.
RefSeq	NP_848946.1. NC_004799.1.
3D structure databases
ProteinModelPortal	O22024.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	844965.
Phylogenomic databases
ProtClustDB	CHL00130.
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]
SMART	SM00961. RuBisCO_small. 1 hit. [Graphical view]
SUPFAM	SSF55239. RuBisCO_small. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RBS_CYAME

Accession

Primary (citable) accession number: O22024

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	January 1, 1998
Last modified:	April 3, 2013
This is version 70 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)