Table 1. Epitope mapping: mouse 12G4 vs human 3C23K.

Position AA			12G4 binding (AU fluorescence)	3C23K binding (AU fluorescence)
Peptide 1	1–20	PPNRRTCVFFEAPGVRGSTK	< 1000	< 1000
Peptide 2	11–30	EAPGVRGSTKTLGELLDTGT	< 1000	< 1000
Peptide 3	21–40	TLGELLDTGTELPRAIRCLY	< 1000	< 1000
Peptide 4	31–50	ELPRAIRCLYSRCCFGIWNL	< 1000	< 1000
Peptide 5	41–60	SRCCFGIWNLTQDRAQVEMQ	37300 ± 5000	28400 ± 5000
Peptide 6	51–70	TQDRAQVEMQGCRDSDEPGC	24500 ± 4300	26000 ± 5100
Peptide 7	61–80	GCRDSDEPGCESLHCDPSPR	< 1000	< 1000
Peptide 8	71–90	ESLHCDPSPRAHPSPGSTLF	< 1000	< 1000
Peptide 9	81–100	AHPSPGSTLFTCSCGTDFCN	< 1000	< 1000
Peptide 10	91–110	TCSCGTDFCNANYSHLPPPG	< 1000	< 1000
Peptide 11	101–120	ANYSHLPPPGSPGTPGSQGP	< 1000	< 1000
Peptide 12	111–130	SPGTPGSQGPQAAPGESIWM	< 1000	< 1000
Peptide 13	113–132	GTPGSQGPQAAPGESIWMAL	< 1000	< 1000
Control	47	WNLTQDRAQVEMQGCRDSDE	11200 ± 2000	16600 ± 2300