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_6112	EXTN2_ARATH	--NA--	"Arabidopsis thaliana"	Brassicaceae	--NA--	Signaling-peptide	"Cell wall; Cell wall biogenesis/degradation; Complete proteome; Glycoprotein; Hydroxylation; Repeat; Secreted; Signal; Structural protein | Extensin-2 precursor (AtExt2) (Cell wall hydroxyproline-rich,glycoprotein 1) (HRGP1).Secreted, primary cell wall."	--NA--	MGPSAHLISALGVIIMATMVAAYEPETYASPPPLYSSPLPEVEYKTPPLPVYSSPPPPTYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVEYKSPPPPYVYSSPPPPTYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYNSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVEYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVEYKSPPPPYVYSSPPPPYYSPSPKVDYKSPPPPYVYSSPPPPYYSPSPKVHYKSPPPPYVYNSPPPPYYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVHYKSPPPPYVYSSPPPPYYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVYYKSPPPPYVYSSPPPPYYSPSPKVYYKSPPPPYYSPSPKVYYKSPPHPHVCVCPPPPPCYSPSPKVVYKSPPPPYVYNSPPPPYVDSSPPPTYTPAPEVEYKSPPPPYVYSSPPPPTYSPSPKVDYKSPPPPYYYSPSPKVYYKSPPPPSYYSPSPKVEYKSPPPPSYSPSPKTEY	743	"Experimental evidence at transcript level"	83015.06	82961.67	9.28	--NA--	"FUNCTION:Structural component which strengthens the primary cell wall.TISSUE SPECIFICITY:Predominantly expressed in the roots.DEVELOPMENTAL STAGE:Early expressed in the whole plant, but was restricted to lower stems, flower buds and roots in the mature plant (6 weeks old).INDUCTION:By wounding and water stress; in response to plant hormones 2,4-D, BAP treatment; in response to L-Pro treatment.Repressed by salt stress.PTM:Extensins contain a characteristic repeat of the pentapeptide Ser-Pro(4).The proline residues are hydroxylated and then O- glycosylated (arabinosylation).PTM:Synthetised as soluble proteins which become insolubilised in the cell wall through the intermolecular cross-linking of Tyr on adjacent monomers. Isodityrosine (IDT) stabilizes and makes rigid the part of the polypeptide where IDT functional sites are present.SIMILARITY:Belongs to the extensin family.SEQUENCE CAUTION:Sequence=BAB21544.1; Type=Frameshift; Positions=17; Sequence=BAB21544.1; Type=Miscellaneous discrepancy; Note=Incomplete cDNA clone; "