63877F1E11A02DA0DB604E349E3B6A1FEDA7CFDF8995C69D1AC8855678AF3371D140BF53737BE6FA0371C73154465220

The CXXC motif is highly conserved across a broad range of retroviral envelope proteins. It is thought to participate in the formation of a labile disulfide bond possibly with the CX6CC motif present in the transmembrane protein (By similarity).

Source:http://purl.uniprot.org/SHA-384/63877F1E11A02DA0DB604E349E3B6A1FEDA7CFDF8995C69D1AC8855678AF3371D140BF53737BE6FA0371C73154465220