Table 2.

Description of test case notations used in the current study

Test case type	Description
Type1_11–81aa	Peptides were derived from well characterized proteins. In eight independent test cases lengths of peptides ranged between 11 to 81 amino-acids.
Type2.1–2.3	Peptides were derived from uncharacterized proteins and test cases were classified on the basis of the degree of sequence similarity of proteins with well-annotated proteins.
	2.1: Coverage <70 % & identity < 70 %
	2.2: Coverage <70 % & identity <50 %
	2.3: Coverage <70 % & identity <35 %
Type3	Simulated data to test the “Frequency weighted method”