>9zrx_g mol:protein length:153 Envelope gp41 ectodomainAVGIGAVRRGFLGAAGSTMGAASITLTVQARQLLSGIVQPQNNLLRAPEAQQHLLKLGVWGIKQLQARVLAVERYLRDQQLLGIWGCSGKLICCTNVPWNSSWSNKSLDEIWNNMTWLQWDKEIGNYTQLIYRLIEESQNQQEKNEKELLALD