Table 3.

A summary of identified proteins and peptides containing transmembrane (TM) regions in six digestion conditions. Proteins containing at least one transmembrane domain (TMD) are predicted by the TMHMM algorithm (see method). Peptides containing the sequences of the transmembrane region are identified and summarized in the second row. The last row of data represents the percentage of TMD peptides identified from the identified TMD proteins. Higher ratio of TMD peptide vs. TMD protein indicates higher representation of the transmembrane region in the particular digestion condition.

	Tris RPG	Tris IVS	Tris PPS	ACN IVS	ACN PPS	ACN RPG
TMD Protein	556	476	430	422	324	213
TMD Peptide	88	73	23	86	23	39
TMD peptide/ TMD Protein	15.8%	15.3%	5.3%	20%	4.9%	8.7%