Chains and heterogens:
PDB Chain Sequences:
>1m53A (A:) apslnqdihvqkeseypawwkeavfyqiyprsfkdtnddgigdirgiiekldylkslgid aiwinphydspntdngydisnyrqimkeygtmedfdslvaemkkrnmrlmidvvinhtsd qhpwfiqsksdknnpyrdyyfwrdgkdnqppnnypsffggsawqkdaksgqyylhyfarq qpdlnwdnpkvredlyamlrfwldkgvsgmrfdtvatyskipgfpnltpeqqknfaeqyt mgpnihryiqemnrkvlsrydvatageifgvpldrssqffdrrrhelnmafmfdlirldr dsnerwrhkswslsqfrqiiskmdvtvgkygwntffldnhdnpravshfgddrpqwreas akalatitltqratpfiyqgselgmtnypfrqlnefddievkgfwqdyvqsgkvtatefl dnvrltsrdnsrtpfqwndtlnagftrgkpwfhinpnyveinaereetredsvlnyykkm iqlrhhipalvygayqdlnpqdntvyaytrtlgnerylvvvnfkeypvrytlpandaiee vvidtqqqaaaphstslslspwqagvyklr
>1m53A (A:) eypawwkeavfyqiyprsfkdtnddgigdirgiiekldylkslgidaiwinphydspntd ngydisnyrqimkeygtmedfdslvaemkkrnmrlmidvvinhtsdqhpwfiqsksdknn pyrdyyfwrdgkdnqppnnypsffggsawqkdaksgqyylhyfarqqpdlnwdnpkvred lyamlrfwldkgvsgmrfdtvatyskipgfpnltpeqqknfaeqytmgpnihryiqemnr kvlsrydvatageifgvpldrssqffdrrrhelnmafmfdlirldrdsnerwrhkswsls qfrqiiskmdvtvgkygwntffldnhdnpravshfgddrpqwreasakalatitltqrat pfiyqgselgmtnypfrqlnefddievkgfwqdyvqsgkvtatefldnvrltsrdnsrtp fqwndtlnagftrgkpwfhinpnyveinaereetredsvlnyykkmiqlrhhipalvyga yqdlnpqdntvyaytrtlgnerylvvvnfkeypvrytlpandaieevvidtqqqaaaphs tslslspwqagvyklr