>4X3K_1|Chains A, B|Chromobox protein homolog 7|Mus musculus (10090)
GSHMGEQVFAVESIRKKRVRKGKVEYLVKWKGWPPKYSTWEPEEHILDPRLVMAYEEKEERDRA
>4X3K_2|Chains C, D|H3K27me3 peptide|Homo sapiens (9606)
KAARKSA