>2KA4_2|Chain B|Signal transducer and activator of transcription 2|Homo sapiens (9606) GSHMVPEPDLPHDLRHLNTEPMEIFRNSVKIEEIMPNGDPLLAGQNTVDEVYVSRPS >2KA4_1|Chain A|Crebbp protein|Mus musculus (10090) ATGPTADPEKRKLIQQQLVLLLHAHKCQRREQANGEVRACSLPHCRTMKNVLNHMTHCQAGKACQVAHCASSRQIISHWKNCTRHDCPVCLPLKNASDKR