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_5663	EXPA1_ARATH	--NA--	"Arabidopsis thaliana"	Brassicaceae	--NA--	Signaling-peptide	"Alternative splicing; Cell wall; Cell wall biogenesis/degradation; Complete proteome; Membrane; Secreted; Signal | Expansin-A1 precursor (AtEXPA1) (Alpha-expansin-1) (At-EXP1) (AtEx1),(Ath-ExpAlpha-1.2).Secreted, cell wall; Peripheral membrane protein."	--NA--	GNLYSQGYGTNTAALSTALFNNGLSCGACFEIRCQNDGKWCLPGSIVVTAMALVTFLFIATLGAMTSHVNGYAGGGWVNAHATFYGGGDASGTMGGACGYPCVRRGGIRFTINGHSYFNLVLITNVGGAGDVHSAMVKGSRTGWQAMSRNTNFCPPNNALPNNAGGWCNPPQQHFDLSQPVFQRIAQYRAGIVPVAYRRVWGQNWQSNSYLNGQSLSFKVTTSDGQTIVSNNVANAGWSFGQTFTGAQLR	250	"Experimental evidence at transcript level"	26517.72	26500.73	9.26	--NA--	"FUNCTION:Causes loosening and extension of plant cell walls by disrupting non-covalent bonding between cellulose microfibrils and matrix glucans. No enzymatic activity has been found (By similarity).ALTERNATIVE PRODUCTS:Event=Alternative splicing; Named isoforms=1; Comment=A number of isoforms are produced. According to EST sequences; Name=1; IsoId=Q9C554-1; Sequence=Displayed;TISSUE SPECIFICITY:Expressed in stomatal guard cells and very young vascular bundles throughout the plant.SIMILARITY:Belongs to the expansin family. Expansin A subfamily.SIMILARITY:Contains 1 expansin-like CBD domain.SIMILARITY:Contains 1 expansin-like EG45 domain. "