Sequence alignment between 2ncs(A) and UniProt seq Q66X49 (Q66X49_9HIV1):

Q66X49 (Q66X49_9HIV1): Env polyprotein (Fragment) from Human immunodeficiency virus 1
                 10        20        30        40        50        60        70        80        90       100       110       120       130   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: SGGIRQLQARVLALERYLQDQQLLGIWGCSGKLICTTTVPWNSSWSNKTYKDIWDNMTWLEWDKEISNYTETIYRLIEESQNQQEKNEQELLALDKWASLWNWFDITNWLWYIKLFIMIVGGLIGLRIVFTVL
         ..........................................................................................XXXX...........................XXXXX.......
PDB seq: ------------------------------------------------------------------------------------------KKKKDKWASLWNWFDITNWLWYIKLFIMIVGKKKKK-------
                                                                                                   ---------+---------+---------+------       
                                                                                                           10        20        30