Table 2. Mass Spectrometric Identification of Proteins Classified with nextProt Evidence Level PE2 (Transcript Only).

protein AC	protein name	nextProt evidence level	chromosome	chromosome band	found in	enzyme	suggested reason why previously not identified
Q14773	intercellular adhesion molecule 4	transcript	19	p13.2	preTAILS	trypsin	cell type/tissue-specific expression
Q5VXU9	uncharacterized protein C9orf84	transcript	9	q31.3	TAILS	trypsin	semispecific peptide representing C-terminal processing
Q8N2R8	protein FAM43A	transcript	3	q29	TAILS	GluC	semispecific N terminal peptide, use of GluC for digestion
Q6PK30	cancer/testis antigen 75	transcript	2	q36.1	TAILS	trypsin	semispecific N terminal peptide
P57071	PR domain zinc finger protein 15	transcript	21	q22.3	TAILS | preTAILS	trypsin	semispecific N terminal peptide
Q86UE6	leucine-rich repeat transmembrane neuronal protein 1	transcript	2	p12	TAILS | preTAILS	GluC	semispecific N terminal peptide, use of GluC for digestion