ID PSK1_ORYSJ Reviewed; 89 AA. AC Q0DAS9; Q67VL3; Q9ST21; DT 11-SEP-2007, integrated into UniProtKB/Swiss-Prot. DT 17-OCT-2006, sequence version 1. DT 16-JUN-2009, entry version 16. DE RecName: Full=Phytosulfokines 1; DE Contains: DE RecName: Full=Phytosulfokine-alpha; DE Short=PSK-alpha; DE Short=Phytosulfokine-a; DE Contains: DE RecName: Full=Phytosulfokine-beta; DE Short=PSK-beta; DE Short=Phytosulfokine-b; DE Flags: Precursor; GN Name=PSK1; Synonyms=PSK; GN OrderedLocusNames=Os06g0633300, LOC_Os06g42680; GN ORFNames=P0505A04.32-1, OsJ_021203; OS Oryza sativa subsp. japonica (Rice). OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; OC Spermatophyta; Magnoliophyta; Liliopsida; Poales; Poaceae; BEP clade; OC Ehrhartoideae; Oryzeae; Oryza. OX NCBI_TaxID=39947; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA]. RC STRAIN=cv. Nipponbare; RX MEDLINE=20027587; PubMed=10557360; DOI=10.1073/pnas.96.23.13560; RA Yang H., Matsubayashi Y., Nakamura K., Sakagami Y.; RT "Oryza sativa PSK gene encodes a precursor of phytosulfokine-alpha, a RT sulfated peptide growth factor found in plants."; RL Proc. Natl. Acad. Sci. U.S.A. 96:13560-13565(1999). RN [2] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=cv. Nipponbare; RX PubMed=16100779; DOI=10.1038/nature03895; RG International rice genome sequencing project (IRGSP); RT "The map-based sequence of the rice genome."; RL Nature 436:793-800(2005). RN [3] RP GENOME REANNOTATION. RC STRAIN=cv. Nipponbare; RX PubMed=17210932; DOI=10.1101/gr.5509507; RG The rice annotation project (RAP); RT "Curated genome annotation of Oryza sativa ssp. japonica and RT comparative genome analysis with Arabidopsis thaliana."; RL Genome Res. 17:175-183(2007). RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=cv. Nipponbare; RX PubMed=15685292; DOI=10.1371/journal.pbio.0030038; RA Yu J., Wang J., Lin W., Li S., Li H., Zhou J., Ni P., Dong W., Hu S., RA Zeng C., Zhang J., Zhang Y., Li R., Xu Z., Li S., Li X., Zheng H., RA Cong L., Lin L., Yin J., Geng J., Li G., Shi J., Liu J., Lv H., Li J., RA Wang J., Deng Y., Ran L., Shi X., Wang X., Wu Q., Li C., Ren X., RA Wang J., Wang X., Li D., Liu D., Zhang X., Ji Z., Zhao W., Sun Y., RA Zhang Z., Bao J., Han Y., Dong L., Ji J., Chen P., Wu S., Liu J., RA Xiao Y., Bu D., Tan J., Yang L., Ye C., Zhang J., Xu J., Zhou Y., RA Yu Y., Zhang B., Zhuang S., Wei H., Liu B., Lei M., Yu H., Li Y., RA Xu H., Wei S., He X., Fang L., Zhang Z., Zhang Y., Huang X., Su Z., RA Tong W., Li J., Tong Z., Li S., Ye J., Wang L., Fang L., Lei T., RA Chen C.-S., Chen H.-C., Xu Z., Li H., Huang H., Zhang F., Xu H., RA Li N., Zhao C., Li S., Dong L., Huang Y., Li L., Xi Y., Qi Q., Li W., RA Zhang B., Hu W., Zhang Y., Tian X., Jiao Y., Liang X., Jin J., Gao L., RA Zheng W., Hao B., Liu S.-M., Wang W., Yuan L., Cao M., McDermott J., RA Samudrala R., Wang J., Wong G.K.-S., Yang H.; RT "The genomes of Oryza sativa: a history of duplications."; RL PLoS Biol. 3:266-281(2005). RN [5] RP PROTEIN SEQUENCE OF PSK-ALPHA AND PSK-BETA, CHARACTERIZATION, AND RP SULFATION. RX MEDLINE=98058819; PubMed=9371850; DOI=10.1073/pnas.94.24.13357; RA Matsubayashi Y., Takagi L., Sakagami Y.; RT "Phytosulfokine-alpha, a sulfated pentapeptide, stimulates the RT proliferation of rice cells by means of specific high- and low- RT affinity binding sites."; RL Proc. Natl. Acad. Sci. U.S.A. 94:13357-13362(1997). CC -!- FUNCTION: Promotes plant cell differentiation, organogenesis and CC somatic embryogenesis as well as cell proliferation. CC -!- SUBCELLULAR LOCATION: Secreted. CC -!- TISSUE SPECIFICITY: Expressed throughout the seedling. More CC abundant in fragments containing shoot or root apexes where cells CC proliferate vigorously. CC -!- PTM: Sulfation is important for activity and for the binding to a CC putative membrane receptor. CC -!- PTM: PSK-alpha is produced by endopeptidase digestion. PSK-beta is CC produced from PSK-alpha by exopeptidase digestion. CC -!- MISCELLANEOUS: The N-terminal tripeptide (YIY) is the active core. CC -!- SIMILARITY: Belongs to the phytosulfokine family. CC ----------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution-NoDerivs License CC ----------------------------------------------------------------------- DR EMBL; AB020505; BAA86654.1; -; mRNA. DR EMBL; AP004792; BAD37806.1; -; Genomic_DNA. DR EMBL; AP008212; BAF20044.1; -; Genomic_DNA. DR EMBL; CM000143; EAZ37720.1; -; Genomic_DNA. DR RefSeq; NP_001058130.1; -. DR UniGene; Os.3434; -. DR GeneID; 4341588; -. DR KEGG; osa:4341588; -. DR Gramene; Q9ST21; -. DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell. DR GO; GO:0008083; F:growth factor activity; IEA:UniProtKB-KW. DR GO; GO:0030154; P:cell differentiation; IEA:UniProtKB-KW. DR GO; GO:0007275; P:multicellular organismal development; IEA:UniProtKB-KW. PE 1: Evidence at protein level; KW Developmental protein; Differentiation; Direct protein sequencing; KW Glycoprotein; Growth factor; Secreted; Signal; Sulfation. FT SIGNAL 1 22 Potential. FT PROPEP 23 79 Potential. FT /FTId=PRO_0000024061. FT PEPTIDE 80 84 Phytosulfokine-alpha. FT /FTId=PRO_0000024062. FT PEPTIDE 80 83 Phytosulfokine-beta. FT /FTId=PRO_0000024063. FT PROPEP 85 89 Potential. FT /FTId=PRO_0000024064. FT MOD_RES 80 80 Sulfotyrosine. FT MOD_RES 82 82 Sulfotyrosine. FT CARBOHYD 42 42 N-linked (GlcNAc...) (Potential). FT CONFLICT 88 88 K -> N (in Ref. 1; BAA86654). SQ SEQUENCE 89 AA; 9826 MW; FE3CB89B7AAE237E CRC64; MVNPGRTARA LCLLCLALLL LGQDTHSRKL LLQEKHSHGV GNGTTTTQEP SRENGGSTGS NNNGQLQFDS AKWEEFHTDY IYTQDVKKP //