Table 1. FP-Biotinylated Human Albumin Tryptic Peptides Identified by LC/MS/MS^a.

start−end	Mr	sequence	FP-biotinylated
138−144	1499.8	Y*LYEIAR	Y138
146−159	2315.2	HPY*FYAPELLFFAK	Y148
226−233	1452.7	AEFAEVS*K	S232
287−313	3546.6	S*HCIAEVENDEMPADLPSLAAD-FVESK	S287
390−402	2230.0	QNCELFEQLGEY*K	Y401
411−413	983.5	Y*TK	Y411
446−466	3090.5	MPCAEDY*LSVVLNQLCVLHEK	Y452

^aResidue numbers in accession # gi: 3212456 are for the mature albumin protein and do not include the 24 amino acid signal peptide. The added mass from FP-biotin is 572.3 amu. Cysteines were carbamidomethylated, thus adding a mass of 57 amu.