I have a BDP file. It’s id is 4WFF.

Now I have the fasta sequences describing the structures:
>4WFF_1|Chains A,B|Potassium channel subfamily K member 4|Homo sapiens (9606)
MTTAPQEPPARPLQAGSGAGPAPGRAMRSTTLLALLALVLLYLVSGALVFRALEQPHEQQAQRELGEVREKFLRAHPCVSDQELGLLIKEVADALGGGADPETQSTSQSSHSAWDLGSAFFFSGTIITTIGYGNVALRTDAGRLFCIFYALVGIPLFGILLAGVGDRLGSSLRHGIGHIEAIFLKWHVPPELVRVLSAMLFLLIGCLLFVLTPTFVFCYMEDWSKLEAIYFVIVTLTTVGFGDYVAGADPRQDSPAYQPLVWFWILLGLAYFASVLTTIGNWLRVVSRRTSNSLEVLFQ
>4WFF_2|Chains D,F|ANTI-TRAAK ANTIBODY 13E9 FAB FRAGMENT LIGHT CHAIN|Mus musculus (10090)
QIVLTQSPAIMSASPGEKVTMTCSASSSVSYMHWYQQKSGTSPKRWIYDTSKLASGVPARFSGSGSGTSYSLTISSMEAEDAATYYCQQWSNSPPTFGAGAKLELKRADAAPTVSIFPPSSEQLTSGGASVVCFLNNFYPKDINVKWKIDGSERQNGVLNSWTDQDSKDSTYSMSSTLTLTKDEYERHNSYTCEATHKTSTSPIVKSFNRN
>4WFF_3|Chains E,G|ANTI-TRAAK ANTIBODY 13E9 FAB FRAGMENT HEAVY CHAIN|Mus musculus (10090)
EVQLQQSGPELVKPGASMKTSCKVSGYSFTGYIMNWVKQRHGKNLEWIGLINPNTGYTTYNQKFKGKATLTVDKSSSTAYMELLSLTSEDSAIYYCTRGNYVFDYWGQGTTLTVSSAKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVPSSSWPSETVTCNVAHPASSTKVDKKIVPRD
I want to know which part of each sequence is an epitope.
I tried using IEDB database but with no results.
Is there any tool or database that can tell the answer?
I’m not talking about prediction, but on known information.