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_4048	BGAL4_ARATH	--NA--	"Arabidopsis thaliana"	Brassicaceae	--NA--	Signaling-peptide	"Apoplast; Complete proteome; Glycoprotein; Glycosidase; Hydrolase; Secreted; Signal | Beta-galactosidase 4 precursor (EC 3.2.1.23) (Lactase 4).Secreted, extracellular space, apoplast (Probable)."	--NA--	AAMKKFTEKIVWMMKAEKLFQTQGGPIILAQIENEYGPVEWEIGAPGKAYALHVFVNGQLSGTAYGGLDHPKLTFSQKIKLHAGVNKIALLSVAVGLPNVDATVTSLGAKQEAYVFWSKSSCAAFLSNKDENSAARVLFRGFPYDLPPWSFARNGLVEQISMTWDKSDYFWYITDITIGSGETFLKTGDSPLLTVMSAGHFDRTAGEFMASSYDYDAPLDEYGLPREPKYSHLKALHKAIKLSEPALLSAGTHFEQWNKGVLGPVTLKGVNSGTWDMSKWKWSYKIGVKGEALSLHTNTEHYPRSTPEMWPGLIQKAKEGGLDVIETYVFWNGHEPSPGQYYFGDRYDLVKFIKLVHQAGLYVNLRIGPYVCAEWNFGGFPVWLKFVPGMAFRTDNEPFKMVLNFRDKSCIFLAILCCLSLSCIVKASVSYDRKAVIINGQRRILLSGSIMWTENWTGWYTDFGGAVPYRPVEDIAYSVARFIQKGGSLVNYYMYHGGTNRNIGRHWPAYKAQGSCGRCNYAGTFDAKKCLSNCGEASQRWYHVPRSWLKSQNLIVVFEELGGDPNGISLVKRTSSGVRWTQGSFVAKKQPLTWYKSTFATPAGNEPLALDMNTMGKGQVWINGTKWVAQMALGLSTGVPWIMCKQEDAPGPIIDTCNGYYCEDFKPNSINKPKVSILPDCKTEVYNTAKVNAPSVHRNMVPTGTKFSWGSFNEATPTANEAGT	724	"Experimental evidence at protein level"	80591.19	80539.35	8.88	--NA--	"FUNCTION:Preferentially hydrolyzes para-nitrophenyl-beta-D- galactoside. Can hydrolyzes para-nitrophenyl-beta-D-fucoside with 5 time less efficiency.CATALYTIC ACTIVITY:Hydrolysis of terminal non-reducing beta-D- galactose residues in beta-D-galactosides.BIOPHYSICOCHEMICAL PROPERTIES:Kinetic parameters: KM=3.4 uM for para-nitrophenyl-beta-D-galactoside; KM=2.2 uM for ortho-nitrophenyl-beta-D-galactoside; Vmax=467 nmol/sec/mg enzyme with para-nitrophenyl-beta-D- galactoside as substrate; Vmax=1630 nmol/sec/mg enzyme with ortho-nitrophenyl-beta-D- galactoside as substrate; Note=Measured at pH 4.5 and 37 degrees Celsius for all experiments;TISSUE SPECIFICITY:Ubiquitous, with higher expression levels in roots and siliques.INDUCTION:By sugar starvation and exposure to darkness for 24 hours.SIMILARITY:Belongs to the glycosyl hydrolase 35 family."