Table 1. Assignments for peptide fragments from a trypsin digest of a 36-kDa spot^*.

Experimental mass	Theoretical mass	Amino acids sequence	Position
1048.47	1048.50	LIEYCHSK	196–203
1104.61	1104.63	RQDLFIVSK	70–78
1105.54	1105.50	LWCTFHDK	79–86
1241.57	1241.58	HKDYPFHAEV	307–316
1503.70	1503.68	HIDCAQVYQNEK	42–53
1586.84	1586.84	TIGVSNFNPLQIER	156–169
2217.13	2217.09	YKPAVNQIECHPYLTQEK	178–195

^*The resulting sets of peptide masses were then used to search the NCBI database for potential matches, confirming the 36-kDa spot to be aldose reductase.