Chains and heterogens:
PDB Chain Sequences:
>1chmA (A:) qmpktlrirngdkvrstfsaqeyanrqarlrahlaaenidaaiftsyhninyysdflycs fgrpyalvvteddvisisanidggqpwrrtvgtdnivytdwqrdnyfaaiqqalpkarri giehdhlnlqnrdklaarypdaelvdvaaacmrmrmiksaeehvmirhgariadiggaav vealgdqvpeyevalhatqamvraiadtfedvelmdtwtwfqsgintdgahnpvttrkvn kgdilslncfpmiagyytalertlfldhcsddhlrlwqvnvevheaglklikpgarcsdi arelneiflkhdvlqyrtfgyghsfgtlshyygreaglelredidtvlepgmvvsmepmi mlpeglpgaggyrehdilivnengaenitkfpygpekniir
>1chmB (B:) qmpktlrirngdkvrstfsaqeyanrqarlrahlaaenidaaiftsyhninyysdflycs fgrpyalvvteddvisisanidggqpwrrtvgtdnivytdwqrdnyfaaiqqalpkarri giehdhlnlqnrdklaarypdaelvdvaaacmrmrmiksaeehvmirhgariadiggaav vealgdqvpeyevalhatqamvraiadtfedvelmdtwtwfqsgintdgahnpvttrkvn kgdilslncfpmiagyytalertlfldhcsddhlrlwqvnvevheaglklikpgarcsdi arelneiflkhdvlqyrtfgyghsfgtlshyygreaglelredidtvlepgmvvsmepmi mlpeglpgaggyrehdilivnengaenitkfpygpekniir