PPepDB-ID	"Peptide Name"	PMID	"Plant source"	"Plant Family"	"Peptide Family"	"Peptide function"	"Peptide function description"	"Activity against"	Sequence	"Sequence Length"	Validation	"Avg. Molecular wt(Da)"	"Monoisotopic molecular wt(Da)"	pI	Method	"Additional information"
PPepDB_4625	CKX1_MAIZE	--NA--	"Zea mays"	Poaceae	--NA--	Signaling-peptide	"3D-structure; Direct protein sequencing; FAD; Flavoprotein; Glycoprotein; Oxidoreductase; Secreted; Signal | Cytokinin dehydrogenase 1 precursor (EC 1.5.99.12) (Cytokinin oxidase,1) (CKO 1) (COX 1) (ZmCKX1).Secreted, extracellular space."	--NA--	ASVLGTLSYVEGFAFQRDVAYAAFLDRVHGEEVALNKLGLWRVPHPWLNMFVPRSRIADFDRGVFKGILQGTDIVGPLIVYPLNKSMWDDGMSAATPSEDIDVLRASLARGVAPRSWNDYLYLTVGGTLSNAGISGQAFRHGPQISNVLELANTGFFTDADVARIVALAGERNATTVYSIEATLNYDNATAAAAAVDQELMAVVYYLLLAGLIACSHALAAGTPALGDDRGRPWPASLAALALDGKLRTDMDVITGHGEMVTCSKQLNADLFDAVLGGLGQFGVITRARIAVEPAPARARRGRGHSLMGQAFAPGGVVVNMASLGDAAAPPRINVSADGRYVDAGGEQVWSNATAAASTDFGNITSALPAAVLYPSSTGDLVALLSAANSTPGWPYTIAFVFYAVSLLFSSVAPNDLARLQEQNRRILRFCDLAGIQYKTYLARHTDRSDWVRFVYTDFAAFSADQERLTAPRPGGGGASFGPMSYVEGSVFVNQSLATDWVRHFGAAKWNRFVEMKNKYDPKRLLSPGQDIFN	534	"Experimental evidence at protein level"	57228.82	57193.05	5.95	--NA--	"FUNCTION:Catalyzes the oxidation of cytokinins, a family of N(6)- substituted adenine derivatives that are plant hormones, where the substituent is an isopentenyl group. Cleaves zeatin, isopentenyladenine, isopentenyladenosine, zeatin riboside and cis- zeatin, but not dihydrozeatin, kinetin and benzylaminopurine.CATALYTIC ACTIVITY:N(6)-dimethylallyladenine acceptor H(2)O = adenine 3-methylbut-2-enal reduced acceptor.COFACTOR:FAD.ENZYME REGULATION:Competitive inhibition by phenylureas.SUBUNIT:Monomer (By similarity).TISSUE SPECIFICITY:Expressed in immature kernels and unpollinated cobs. Weakly expressed in kernels harvested two weeks after anthesis.PTM:Glycosylated; with approximately 10 hexose residues per site.SIMILARITY:Belongs to the oxygen-dependent FAD-linked oxidoreductase family."