Reviewed, UniProtKB/Swiss-Prot Q0DAS9 (PSK1_ORYSJ)

Names and origin

Protein names

Recommended name:
    Phytosulfokines 1
Cleaved into the following 2 chains:
    1- Recommended name:
            Phytosulfokine-alpha
                Short name=PSK-alpha
                Short name=Phytosulfokine-a
    2- Recommended name:
            Phytosulfokine-beta
                Short name=PSK-beta
                Short name=Phytosulfokine-b

Gene names

Name:	PSK1
Synonyms:	PSK
Ordered Locus Names:	Os06g0633300, LOC_Os06g42680
ORF Names:	P0505A04.32-1, OsJ_021203

Organism

Oryza sativa subsp. japonica (Rice)

Taxonomic identifier

39947 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › Liliopsida › Poales › Poaceae › BEP clade › Ehrhartoideae › Oryzeae › Oryza

Protein attributes

Sequence length	89 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Promotes plant cell differentiation, organogenesis and somatic embryogenesis as well as cell proliferation.
Subcellular location	Secreted.
Tissue specificity	Expressed throughout the seedling. More abundant in fragments containing shoot or root apexes where cells proliferate vigorously.
Post-translational modification	Sulfation is important for activity and for the binding to a putative membrane receptor. PSK-alpha is produced by endopeptidase digestion. PSK-beta is produced from PSK-alpha by exopeptidase digestion.
Miscellaneous	The N-terminal tripeptide (YIY) is the active core.
Sequence similarities	Belongs to the phytosulfokine family.

Ontologies

Keywords
Biological process	Differentiation
Cellular component	Secreted
Domain	Signal
Molecular function	Developmental protein Growth factor
PTM	Glycoprotein Sulfation
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	cell differentiation Inferred from electronic annotation. Source: UniProtKB-KW multicellular organismal development Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	extracellular region Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	growth factor activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 22	22	Potential
	Propeptide	23 – 79	57	Potential		PRO_0000024061
	Peptide	80 – 84	5	Phytosulfokine-alpha		PRO_0000024062
	Peptide	80 – 83	4	Phytosulfokine-beta		PRO_0000024063
	Propeptide	85 – 89	5	Potential		PRO_0000024064
Amino acid modifications
	Modified residue	80	1	Sulfotyrosine
	Modified residue	82	1	Sulfotyrosine
	Glycosylation	42	1	N-linked (GlcNAc...) Potential
Experimental info
	Sequence conflict	88	1	K → N in BAA86654. Ref.1

Sequences

	Sequence		Length	Mass (Da)
	Q0DAS9-1 [UniParc]. Last modified October 17, 2006. Version 1. Checksum: FE3CB89B7AAE237E	FASTA	89	9,826
	10 20 30 40 50 60 MVNPGRTARA LCLLCLALLL LGQDTHSRKL LLQEKHSHGV GNGTTTTQEP SRENGGSTGS 70 80 NNNGQLQFDS AKWEEFHTDY IYTQDVKKP

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Oryza sativa PSK gene encodes a precursor of phytosulfokine-alpha, a sulfated peptide growth factor found in plants." Yang H., Matsubayashi Y., Nakamura K., Sakagami Y. Proc. Natl. Acad. Sci. U.S.A. 96:13560-13565(1999) [PubMed: 10557360] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Strain: cv. Nipponbare.
[2]	"The map-based sequence of the rice genome." International rice genome sequencing project (IRGSP) Nature 436:793-800(2005) [PubMed: 16100779] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Nipponbare.
[3]	"Curated genome annotation of Oryza sativa ssp. japonica and comparative genome analysis with Arabidopsis thaliana." The rice annotation project (RAP) Genome Res. 17:175-183(2007) [PubMed: 17210932] [Abstract] Cited for: GENOME REANNOTATION. Strain: cv. Nipponbare.
[4]	"The genomes of Oryza sativa: a history of duplications." Yu J., Wang J., Lin W., Li S., Li H., Zhou J., Ni P., Dong W., Hu S., Zeng C., Zhang J., Zhang Y., Li R., Xu Z., Li S., Li X., Zheng H., Cong L. , Lin L., Yin J., Geng J., Li G., Shi J., Liu J., Lv H., Li J., Wang J., Deng Y., Ran L., Shi X., Wang X., Wu Q., Li C., Ren X., Wang J., Wang X., Li D., Liu D., Zhang X., Ji Z., Zhao W., Sun Y., Zhang Z., Bao J., Han Y., Dong L., Ji J., Chen P., Wu S., Liu J., Xiao Y., Bu D., Tan J., Yang L., Ye C., Zhang J., Xu J., Zhou Y., Yu Y., Zhang B., Zhuang S., Wei H., Liu B., Lei M., Yu H., Li Y., Xu H., Wei S., He X., Fang L., Zhang Z., Zhang Y., Huang X., Su Z., Tong W., Li J., Tong Z., Li S., Ye J., Wang L., Fang L., Lei T., Chen C.-S., Chen H.-C., Xu Z., Li H., Huang H., Zhang F., Xu H., Li N., Zhao C., Li S., Dong L., Huang Y., Li L., Xi Y., Qi Q., Li W., Zhang B., Hu W., Zhang Y., Tian X., Jiao Y., Liang X., Jin J., Gao L., Zheng W., Hao B., Liu S.-M., Wang W., Yuan L., Cao M., McDermott J., Samudrala R., Wang J., Wong G.K.-S., Yang H. PLoS Biol. 3:266-281(2005) [PubMed: 15685292] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Nipponbare.
[5]	"Phytosulfokine-alpha, a sulfated pentapeptide, stimulates the proliferation of rice cells by means of specific high- and low-affinity binding sites." Matsubayashi Y., Takagi L., Sakagami Y. Proc. Natl. Acad. Sci. U.S.A. 94:13357-13362(1997) [PubMed: 9371850] [Abstract] Cited for: PROTEIN SEQUENCE OF PSK-ALPHA AND PSK-BETA, CHARACTERIZATION, SULFATION.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AB020505 mRNA. Translation: BAA86654.1. AP004792 Genomic DNA. Translation: BAD37806.1. AP008212 Genomic DNA. Translation: BAF20044.1. CM000143 Genomic DNA. Translation: EAZ37720.1.
RefSeq	NP_001058130.1.
UniGene	Os.3434
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	4341588.
KEGG	osa:4341588.
Organism-specific databases
Gramene	Q9ST21.
Family and domain databases
ProtoNet	Search...

Entry information

Entry name

PSK1_ORYSJ

Accession

Primary (citable) accession number: Q0DAS9
Secondary accession number(s): Q67VL3, Q9ST21

Entry history

Integrated into UniProtKB/Swiss-Prot:	September 11, 2007
Last sequence update:	October 17, 2006
Last modified:	November 4, 2008
This is version 15 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)