Chains and heterogens:
PDB Chain Sequences:
>1f45A (A:) iwelkkdvyvveldwypdapgemvvltcdtpeedgitwtldqssevlgsgktltiqvkef gdagqytchkggevlshsllllhkkedgiwstdilkdqkepknktflrceaknysgrftc wwlttistdltfsvkssrgssdpqgvtcgaatlsaervrgdnkeyeysvecqedsacpaa eeslpievmvdavhklkyenytssffirdiikpdppknlqlkplknsrqvevsweypdtw stphsyfsltfcvqvqgkskrekkdrvftdktsatvicrknasisvraqdryyssswsew asvpcs
>1f45A (A:) iwelkkdvyvveldwypdapgemvvltcdtpeedgitwtldqssevlgsgktltiqvkef gdagqytcshsllllhkkedgiwstdilkdqkepknktflrceaknysgrftcwwlttis tdltfsvkssrgssdpqgvtcgaatlsaeeyeysvecqedsacpaaeeslpievmvdavh klkyenytssffirdiikpdppknlqlkplknsrqvevsweypdtwstphsyfsltfcvq vqkdrvftdktsatvicrsisvraqdryyssswsewasvpcs
>1f45B (B:) qnllravsnmlqkarqtlefypctseeidheditkdktstveaclpleltknesclnsre tsfitngsclasrktsfmmalclssiyedlkmyqvefktmnakllmdpkrqifldqnmla videlmqalnfnsetvpqkssleepdfyktkiklcillhafriravtidrvmsylnas
>1f45B (B:) qnllravsnmlqkarqtlefypcstveaclpleltknesctsfitngssfmmalclssiy edlkmyqvefktmnakllmdpkrqifldqnmlavidelmqalyktkiklcillhafrira vtidrvmsylnas