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1.A.87.2.9
The phytosulfokine receptor, PSKR1, of 1008 aas with both a serine/threonine-protein kinase activity and a guanylate cyclase activity (Kwezi et al. 2011). In response to phytosulfokine binding, it activates a signaling cascade involved in plant cell differentiation, organogenesis, somatic embryogenesis, cellular proliferation and plant growth. It is also involved in plant immunity, with antagonistic effects on bacterial and fungal resistances (Mosher et al. 2013). CNGC17 and AHAs form a functional cation-translocating unit that is activated by PSKR1/BAK1 and possibly other BAK1/RLK complexes (Ladwig et al. 2015). PSKR is a transmembrane LRR-RLK family protein with a binding site for the small signalling peptide, phytosulfokine (PSK). There are 15 members in rice (Orysa sativa), induced under different conditions in different plant tissues  (Nagar et al. 2020). PSKR1 and PSYR1 mediate a signaling pathway in response to two distinct ligands, which redundantly contribute to cellular proliferation and plant growth (Amano et al. 2007).

Accession Number:Q9ZVR7
Protein Name:Phytosulfokine receptor 1
Length:1008
Molecular Weight:112354.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Location1 / Topology2 / Orientation3: Cell membrane1 / Single-pass type I membrane protein2
Substrate

Cross database links:

Structure:
4Z63   4Z64     

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FASTA formatted sequence
1:	MRVHRFCVIV IFLTELLCFF YSSESQTTSR CHPHDLEALR DFIAHLEPKP DGWINSSSST 
61:	DCCNWTGITC NSNNTGRVIR LELGNKKLSG KLSESLGKLD EIRVLNLSRN FIKDSIPLSI 
121:	FNLKNLQTLD LSSNDLSGGI PTSINLPALQ SFDLSSNKFN GSLPSHICHN STQIRVVKLA 
181:	VNYFAGNFTS GFGKCVLLEH LCLGMNDLTG NIPEDLFHLK RLNLLGIQEN RLSGSLSREI 
241:	RNLSSLVRLD VSWNLFSGEI PDVFDELPQL KFFLGQTNGF IGGIPKSLAN SPSLNLLNLR 
301:	NNSLSGRLML NCTAMIALNS LDLGTNRFNG RLPENLPDCK RLKNVNLARN TFHGQVPESF 
361:	KNFESLSYFS LSNSSLANIS SALGILQHCK NLTTLVLTLN FHGEALPDDS SLHFEKLKVL 
421:	VVANCRLTGS MPRWLSSSNE LQLLDLSWNR LTGAIPSWIG DFKALFYLDL SNNSFTGEIP 
481:	KSLTKLESLT SRNISVNEPS PDFPFFMKRN ESARALQYNQ IFGFPPTIEL GHNNLSGPIW 
541:	EEFGNLKKLH VFDLKWNALS GSIPSSLSGM TSLEALDLSN NRLSGSIPVS LQQLSFLSKF 
601:	SVAYNNLSGV IPSGGQFQTF PNSSFESNHL CGEHRFPCSE GTESALIKRS RRSRGGDIGM 
661:	AIGIAFGSVF LLTLLSLIVL RARRRSGEVD PEIEESESMN RKELGEIGSK LVVLFQSNDK 
721:	ELSYDDLLDS TNSFDQANII GCGGFGMVYK ATLPDGKKVA IKKLSGDCGQ IEREFEAEVE 
781:	TLSRAQHPNL VLLRGFCFYK NDRLLIYSYM ENGSLDYWLH ERNDGPALLK WKTRLRIAQG 
841:	AAKGLLYLHE GCDPHILHRD IKSSNILLDE NFNSHLADFG LARLMSPYET HVSTDLVGTL 
901:	GYIPPEYGQA SVATYKGDVY SFGVVLLELL TDKRPVDMCK PKGCRDLISW VVKMKHESRA 
961:	SEVFDPLIYS KENDKEMFRV LEIACLCLSE NPKQRPTTQQ LVSWLDDV