>3NIK_1|Chains A, B, C[auth D], D[auth F]|E3 ubiquitin-protein ligase UBR1|Saccharomyces cerevisiae (4932) GSVHKHTGRNCGRKFKIGEPLYRCHECGCDDTCVLCIHCFNPKDHVNHHVCTDICTEFTSGICDCGDEEAWNSPLHCKAEEQ >3NIK_2|Chain E[auth X]|Peptide REAA|null REAA