Chains and heterogens:
PDB Chain Sequences:
>6c18A (A:) gamsgvseyelpedprwelprdrlvlgkplgegafgqvvlaeaigldkdkpnrvtkvavk mlksdatekdlsdlisememmkmigkhkniinllgactqdgplyviveyaskgnlreylq arrppgleysynpshnpeeqlsskdlvscayqvargmeylaskkcihrdlaarnvlvted nvmkiadfglardihhidyykkttngrlpvkwmapealfdriythqsdvwsfgvllweif tlggspypgvpveelfkllkeghrmdkpsnctnelymmmrdcwhavpsqrptfkqlvedl drivaltsnqe
>6c18A (A:) lpedprwelprdrlvlgkplggqvvlaeaigldkdkpnrvtkvavkmlksdatekdlsdl isememmkmigkhkniinllgactqdgplyviveyaskgnlreylqarrppgsynpshnp eeqlsskdlvscayqvargmeylaskkcihrdlaarnvlvtednvmkiadfglpvkwmap ealfdriythqsdvwsfgvllweiftlggspypgvpveelfkllkeghrmdkpsnctnel ymmmrdcwhavpsqrptfkqlvedldrivaltsnqe
>6c18B (B:) gamsgvseyelpedprwelprdrlvlgkplgegafgqvvlaeaigldkdkpnrvtkvavk mlksdatekdlsdlisememmkmigkhkniinllgactqdgplyviveyaskgnlreylq arrppgleysynpshnpeeqlsskdlvscayqvargmeylaskkcihrdlaarnvlvted nvmkiadfglardihhidyykkttngrlpvkwmapealfdriythqsdvwsfgvllweif tlggspypgvpveelfkllkeghrmdkpsnctnelymmmrdcwhavpsqrptfkqlvedl drivaltsnqe
>6c18B (B:) pedprwelprdrlvlgkplggqvvlaeaigldkpnrvtkvavkmlksdatekdlsdlise memmkmigkhkniinllgactqdgplyviveyaskgnlreylqarrqlsskdlvscayqv argmeylaskkcihrdlaarnvlvtednvmkiadfpvkwmapealfdriythqsdvwsfg vllweiftlggspypgvpveelfkllkeghrmdkpsnctnelymmmrdcwhavpsqrptf kqlvedldrivalts