>3WA4_1|Chain A|Growth factor receptor-bound protein 2|Homo sapiens (9606) GSPEFWFFGKIPRAKAEEMLSKQRHDGAFLIRESESAPGDFSLSVKFGNDVQHFKVLRDGAGKYFLWVVKFNSLNELVDYHRSTSVSRNQQIFLRDIE >3WA4_2|Chain B|T-cell-specific surface glycoprotein CD28|Homo sapiens (9606) SDYMNMTP