>5CAY_1|Chain A[auth G]|Envelope glycoprotein gp120 core from ST strain of HIV-2|Human immunodeficiency virus type 2 (ISOLATE ST) (11721)
VWRNASIPLFCATKNRDTWGTIQCLPDNDDYQEIALNVIEAFDAWNNTVTEQAVEDVWSLFETSIKPCVKLTNTSVITESCDKHYWDTMRFRYCAPPGFALLRCNDTNYSGFEPNCSKVVAATCTRMMETQTSTWFGFNGTRAENRTYIYWHGRDNRTIISLNKFYNLTVHCKRPGNRRPRQAWCWFKGEWKEAMKEVKLTLAKHPRYKGTNDTEKIRFIAPGERSDPEVAYMWTNCRGEFLYCNMTWFLNWVENRTNQTQHNYVPCHIKQIINTWHKVGKNVYLPPREGQLTCNSTVTSIIANIDGGENQTNITFSAEVAELYRLELGDYKLIEVTPIHHHHHH
>5CAY_2|Chain B|T-cell surface glycoprotein CD4|Homo sapiens (9606)
MKKVVLGKKGDTVELTCTASQKKSIQFHWKNSNQIKILGNQGSFLTKGPSKLNDRADSRRSLWDQGNFPLIIKNLKIEDSDTYICEVEDQKEEVQLLVFGLTANSDTHLLQGQSLTLTLESPPGSSPSVQCRSPRGKNIQGGKTLSVSQLELQDSGTWTCTVLQNQKKVEFKIDIVVLAFQKASHHHHHH