MGSLQPLATLYLLGMLVASVLAAENLWVTVYYGVPVWKEAKTTLFCASDARAYEKEVHNVWATHACVPTDPSPQELVLGNVTENFNMWKNDMVDQMHEDIISLWDQSLKPCVKLTPLCVTLICSNATVKNGTVEEMKNCSFNTTTEIRDKEKKEYALFYKPDIVPLSETNNTSEYRLINCNTSACTQACPKVTFEPIPIHYCAPAGYAILKCNDETFNGTGPCSNVSTVQCTHGIRPVVSTQLLLNGSLAEKEIVIRSENLTNNAKIIIVHLHTPVEIVCTRPNNNTRKSVRIGPGQTFYATGDIIGDIKQAHCNISEEKWNDTLQKVGIELQKHFPNKTIKYNQSAGGDMEITTHSFNCGGEFFYCNTSNLFNGTYNGTYISTNSSANSTSTITLQCRIKQIINMWQGVGRCMYAPPIAGNITCRSNITGLLLTRDGGTNSNETETFRPAGGDMRDNWRSELYKYKVVKIEPLGVAPTRCKRRVVGRRRRRRAVGIGAVFLGFLGAAGSTMGAASMTLTVQARNLLSGIVQQQSNLLRAPEAQQHLLKLTVWGIKQLQARVLAVERYLRDQQLLGIWGCSGKLICCTNVPWNSSWSNRNLSEIWDNMTWLQWDKEISNYTQIIYGLLEESQNQQEKNEQDLLALD
A chimeric CH848 envelope SOSIP containing a stabilizing disulfide mutation, and a 6 Arg repeat on the C-terminal end of the gp120 chain, and is truncated after residue 664. Not that MW is for the protein components only.