P00872 (RBS1_LEMGI) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Ribulose bisphosphate carboxylase small chain SSU1, chloroplastic
Short name=RuBisCO small subunit SSU1
EC=4.1.1.39

Gene names

Name:

SSU1

Organism

Lemna gibba (Swollen duckweed)

Taxonomic identifier

4470 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Viridiplantae › Streptophyta › Streptophytina › Embryophyta › Tracheophyta › Euphyllophyta › Spermatophyta › Magnoliophyta › Liliopsida › Alismatales › Araceae › Lemnoideae › Lemna

Protein attributes

Sequence length	173 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at transcript level

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	This protein is coded by one member of a small multigene family.
Sequence similarities	Belongs to the RuBisCO small chain family.
Sequence caution	The sequence CAA24969.1 differs from that shown. Reason: Erroneous initiation.

Ontologies

Keywords
Biological process	Calvin cycle Carbon dioxide fixation Photorespiration Photosynthesis
Cellular component	Chloroplast Plastid
Domain	Transit peptide
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
	Transit peptide	1 – 53	53	Chloroplast By similarity
	Chain	54 – 173	120	Ribulose bisphosphate carboxylase small chain SSU1, chloroplastic		PRO_0000031512
Experimental info
	Sequence conflict	71 – 74	4	LPPL → FPLS in CAA24969. Ref.2

Sequences

	Sequence		Length	Mass (Da)
	P00872 [UniParc]. Last modified November 1, 1990. Version 2. Checksum: D859F626DA009391	FASTA	173	19,522
	10 20 30 40 50 60 MMVSTAAVAR VRPAQTNMVG AFNGCRSSVA FPATRKANND LSTLPSSGGR VSCMQVWPPE 70 80 90 100 110 120 GLKKFETLSY LPPLSVEDLA KEVDYLLRND WVPCIEFSKE GFVYRENNAS PGYYDGRYWT 130 140 150 160 170 MWKLPMFGCT DASQVIAEVE EAKKAYPEYF VRIIGFDNKR QVQCISFIAY KPT

References

[1]	"Differential expression of individual genes encoding the small subunit of ribulose-1,5-bisphosphate carboxylase in Lemna gibba." Silverthorne J., Wimpee C.F., Yamada T., Rolfe S.A., Tobin E.M. Plant Mol. Biol. 15:49-58(1990) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[2]	"Nucleotide sequence encoding the precursor of the small subunit of ribulose 1,5-bisphosphate carboxylase from Lemna gibba L.G-3." Stiekema W.J., Wimpee C.F., Tobin E.M. Nucleic Acids Res. 11:8051-8061(1983) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	X17235 mRNA. Translation: CAA35104.1. X00137 mRNA. Translation: CAA24969.1. Different initiation.
PIR	RKDWS. A01091.
3D structure databases
ProteinModelPortal	P00872.
SMR	P00872. Positions 55-172.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
Gene3D	3.30.190.10. 1 hit.
InterPro	IPR024681. RuBisCO_sc. IPR000894. RuBisCO_sc_dom. IPR024680. RuBisCO_ssu_N. [Graphical view]
Pfam	PF12338. RbcS. 1 hit. PF00101. RuBisCO_small. 1 hit. [Graphical view]
PRINTS	PR00152. RUBISCOSMALL.
SUPFAM	SSF55239. RuBisCO_small. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RBS1_LEMGI

Accession

Primary (citable) accession number: P00872

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 21, 1986
Last sequence update:	November 1, 1990
Last modified:	April 3, 2013
This is version 78 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program