Table I. Identification of PMEs in cell wall-enriched extracts from 10-d-old roots and 4-d-old dark-grown hypocotyls of Arabidopsis using nano-LC-ESI-MS/MS.

Values represent the percentage of coverage of the mature protein. –, No peptides identified.

Protein Name	Locus	Roots	Hypocotyls
AtPME2	At1g53830	19	19
AtPME3	At3g14310	24	28
AtPME16	At2g43050	–	26
AtPME17	At2g45220	31	5
AtPME32	At3g43270	–	15
AtPME34	At3g49220	–	9
AtPME35	At3g59010	–	10
AtPME44	At4g33220	–	19
AtPME51	At5g09760	13	–