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_4684	LAC4_ARATH	--NA--	"Arabidopsis thaliana"	Brassicaceae	--NA--	Signaling-peptide	"Apoplast; Complete proteome; Copper; Glycoprotein; Lignin degradation; Metal-binding; Oxidoreductase; Repeat; Secreted; Signal | Laccase-4 precursor (EC 1.10.3.2) (Benzenediol:oxygen oxidoreductase,4) (Urishiol oxidase 4) (Diphenol oxidase 4) (Protein IRREGULAR XYLEM,12).Secreted, extracellular space, apoplast (Potential)."	--NA--	ATVHYSGTLSSSPTILTLPPPQNATSIANNFTNSLRSLNSKKYPALVPTTIDHHLFFTVGLGLNACPTCKAGNGSRVVASINNVTFIMPKTALLPAHYFNMGSHMVWFLFLVSFFSVFPAPSESMVRHYKFNVVMKNVTRLCSSKPTVTVNGRYPGPTIYAREDDTLLIKVVNHVKYNVSIHWHGVRQVRTGWADGPAYIPPKDLPKCPSGGWVVIRFRADNPGVWFMHCHLEVHTTWGLKMAFLVENGKGPNQSILPTGVIAPENHPVHLHGFNFFEVGRGLGNFNSTKDPKNFNLVDPVERNTIGVTQCPIQPGQVYTYNYTLTGQRGTLWWHAHILWLRATVYGALVILPKRGVPTSGVFTTDFPKNPPHVFNYSGGSVTNMATETGTRLYKLPYNATVQLVLQDVKPFKTDTVLIAPGQTTNVLLTASKSAGKYLVTASPFMDAPIAVDNVTATVRNCPSQGYKLSVENGKTYLLRLVNAALNEELFFKVAGHIFTVVEVDAVYYPFPKPDNEKVIVLGEWWKSDTENIINEALKSGLAPNVSDSHMINGHPGP	558	"Experimental evidence at transcript level"	61526.69	61487.6	9.31	--NA--	"FUNCTION:Lignin degradation and detoxification of lignin-derived products (By similarity). Required for secondary xylem cell wall lignification.CATALYTIC ACTIVITY:4 benzenediol O(2) = 4 benzosemiquinone 2 H(2)O.COFACTOR:Binds 4 copper ions per monomer (By similarity).TISSUE SPECIFICITY:Ubiquitous, with higher levels in the inflorescence stem.DEVELOPMENTAL STAGE:Transcript levels diminished during rosette leaves development.SIMILARITY:Belongs to the multicopper oxidase family.SIMILARITY:Contains 3 plastocyanin-like domains."