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_5163	CKX1_ARATH	--NA--	"Arabidopsis thaliana"	Brassicaceae	--NA--	Signaling-peptide	"Complete proteome; FAD; Flavoprotein; Glycoprotein; Oxidoreductase; Signal; Vacuole | Cytokinin dehydrogenase 1 precursor (EC 1.5.99.12) (Cytokinin oxidase,1) (CKO 1) (AtCKX1).Vacuole."	--NA--	DQETGKLLSELNYIPSTLFSSEVPYIEFLDRVHIAERKLRAKGLWEVPHPHYETQKEWKSHFGKRWETFAQRKQAYDPLAILAPGQRIFQKTTGKLSPIQIINRTDLLNNWRSSFSPNDSTQASRFKSDGKTLYCLEVVKYFNPEEASSMIITRARISLEPAPHMVKWIRVLYSDFSAFSRDQEYLISKEKTFDYVEGFVISGQAFKHGPQINNVYQLEIVTGKGEVVTCSEKRNSELFFSVLGGLGQFGIYKGKQPYVDVSGGEIWINILRETLKYGLSPKSWTDYLHLTVGGTLSNAGLAKSKATGSPQRYHYASILPKPRTVMGLTSSLRFHRQNNKTFLGIFMILVLSCIPGRTNLCSNHSVSTPKELPSSNEDIFYLVAFLPSAVPNSSGKNDLEYLLKQNQRVMNFCAAANLNVKQYLPNPSDIRSSLVSLDLEGYISFDDVHNVAKDFGNRYQLPPLAILHPRSVFDISSMMKHIVHLGSTSNLTVAARGHGHSLQGQALAHQGVVIKMESLRSPDIRWLNLLIPKSSIYQFATEVFNNILTSNNNGPILIYPVNQSKWKKHTSLITP	575	"Experimental evidence at protein level"	64924.28	64883.63	9.37	--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.CATALYTIC ACTIVITY:N(6)-dimethylallyladenine acceptor H(2)O = adenine 3-methylbut-2-enal reduced acceptor.COFACTOR:FAD (By similarity).BIOPHYSICOCHEMICAL PROPERTIES:Kinetic parameters: KM=0.5 uM for isopentenyladenine; Vmax=0.1 nmol/h/mg enzyme;TISSUE SPECIFICITY:Expressed in shoot apexes, lateral shoot meristems, growing tissues of young flowers, and weakly at the root-hypocotyl junction.MISCELLANEOUS:The enzymatic activity is significantly greater under acidic conditions in vitro.SIMILARITY:Belongs to the oxygen-dependent FAD-linked oxidoreductase family."