Chains and heterogens:
PDB Chain Sequences:
>1a22A (A:) fptiplsrlfdnamlrahrlhqlafdtyqefeeayipkeqkysflqnpqtslcfsesipt psnreetqqksnlellrisllliqswlepvqflrsvfanslvygasdsnvydllkdleer iqtlmgrlegqifkqtyskfdtdallknygllycfrkdmdkvetflrivqcrsvegscgf
>1a22B (B:) fsgseataailsrapwslqsvnpglktnsskepkftkcrsperetfschwtdevhhgtkn lgpiqlfytrrntqewtqewkecpdyvsagenscyfnssftsiwipycikltsnggtvde kcfsvdeivqpdppialnwtllnvsltgihadiqvrweaprnadiqkgwmvleyelqyke vnetkwkmmdpilttsvpvyslkvdkeyevrvrskqrnsgnygefsevlyvtlpqmsq
>1a22B (B:) pkftkcrsperetfschwtlgpiqlfytrrntqewtqewkecpdyvsagenscyfnssft siwipycikltsnggtvdekcfsvdeivqpdppialnwtllngihadiqvrweaprnadi qkgwmvleyelqykevnetkwkmmdpilttsvpvyslkvdkeyevrvrskqrnsgnygef sevlyvtlpqms