Chains and heterogens:
PDB Chain Sequences:
>3mgaA (A:) snamkealatgseawwrtktgpewirekdgnyrvtfwwrdpqgnethspirrvwvyitgv tdhhqnaqpqtmariagtdvwrwstalsanwrgsycfipterddvfaafapgetpdrnvl regwrqllpqaiadplnsqswrggrghavsalempdaplqpgwdrpetpyspplmmqwhs erlgnsrrvwilttgdeapeerplailldgqfwaenmpvwpalaslthqrllpgavylli daidtqhrsqelpcnadfwlavqqellpqvravtpfsddagrtvvagqsfgglsalyagl nwptrfgcvlsqsgsfwwphritppegevitrlktgalcarglrivleagvrepivfqan qalyaqlntsqqsifwrqvdgghdalcwrggltqglmllwqplidtl
>3mgaA (A:) tgseawwrtktgpewirekdgnyrvtfwwrdpqgnethspirrvwvyitgvtdhhqnaqp qtmariagtdvwrwstalsanwrgsycfipterddvfaafapgetpdrnvlregwrqllp qaiadplnsqswrggrghavsalempdaplqpgwdrpetpyspplmmqwhserlgnsrrv wilttgdeapeerplailldgqfwaenmpvwpalaslthqrllpgavyllidaidtqhrs qelpcnadfwlavqqellpqvravtpfsddagrtvvagqsfgglsalyaglnwptrfgcv lsqsgsfwwphritppegevitrlktgalcarglrivleagvrepivfqanqalyaqlnt sqqsifwrqvdgghdalcwrggltqglmllwqplidt
>3mgaB (B:) snamkealatgseawwrtktgpewirekdgnyrvtfwwrdpqgnethspirrvwvyitgv tdhhqnaqpqtmariagtdvwrwstalsanwrgsycfipterddvfaafapgetpdrnvl regwrqllpqaiadplnsqswrggrghavsalempdaplqpgwdrpetpyspplmmqwhs erlgnsrrvwilttgdeapeerplailldgqfwaenmpvwpalaslthqrllpgavylli daidtqhrsqelpcnadfwlavqqellpqvravtpfsddagrtvvagqsfgglsalyagl nwptrfgcvlsqsgsfwwphritppegevitrlktgalcarglrivleagvrepivfqan qalyaqlntsqqsifwrqvdgghdalcwrggltqglmllwqplidtl
>3mgaB (B:) seawwrtktgpewirekdgnyrvtfwwrdpqgnethspirrvwvyitgvtdhhqnaqpqt mariagtdvwrwstalsanwrgsycfipterddvfaafapgetpdrnvlregwrqllpqa iadplnsqswrggrghavsalempdaplqpgwdrpetpyspplmmqwhserlgnsrrvwi lttgdeapeerplailldgqfwaenmpvwpalaslthqrllpgavyllidaidtqhrsqe lpcnadfwlavqqellpqvravtpfsddagrtvvagqsfgglsalyaglnwptrfgcvls qsgsfwwphritppegevitrlktgalcarglrivleagvrepivfqanqalyaqlntsq qsifwrqvdgghdalcwrggltqglmllwqplidt