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_4080	EXPA4_ARATH	--NA--	"Arabidopsis thaliana"	Brassicaceae	--NA--	Signaling-peptide	"Cell wall; Cell wall biogenesis/degradation; Complete proteome; Direct protein sequencing; Membrane; Secreted; Signal | Expansin-A4 precursor (AtEXPA4) (Alpha-expansin-4) (At-EXP4) (AtEx4),(Ath-ExpAlpha-1.6).Secreted, cell wall; Peripheral membrane protein."	--NA--	ACGYGNLYSQGYGTNTAALSTALFNNGMSCGACFELKCANDPQWCHSGSPMAIKLAILFTTFVLFSLADARIPGIYSGGAWQNAHATFYGGSDASGTMGGMSLSRNWGQNWQSNAVLVGQALSFRVTGSDRRTSTSWNMVPSNWQFGQTFSILITATNFCPPNLAQPSDNGGWCNPPREHFDLAMPVFLKIAQYRAGIVPVGKNFRVVSYRRVPCRKRGGIRFTINGHRYFNLVLITNVAGAGDIVRASVKGSRTGW	257	"Experimental evidence at protein level"	27847.65	27829.69	9.76	--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).TISSUE SPECIFICITY:Expressed in the 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. "