Chains and heterogens:
PDB Chain Sequences:
>4r9fA (A:) mskiflkgkaiiamllviavlafagcsgsstknsstngnkkqvvltlwypwagpdgdavv slakeyskthpnvqikaqmvsgagiaatqgggqgkflsavaagnppdlvlywgqdalpgl adqgaiiplddylkdvdtskffeaaynamkykgkiyglpemvnvrvlfwnkdlfkqagld pntppktiaeldqmaakltktkngtieqmgfipwigqgvphvmagvfgtslvdsngnpil spdknpqllnllkwevsysdkygamninkfiagmsqnssqandpfvlgkvammisgewqi nankqynpklnfgvgpipqapggkpmpslmdgntwmipkgskhpqeamdfikwtmdpqri adtadkvyniapiveaakiqklnndpyfkevlnvaqkgsiyytpaakgmlstetaannaf qaaqykkstpeqalknaqaeaekslsq
>4r9fA (A:) kqvvltlwypwagpdgdavvslakeyskthpnvqikaqmvsgagiaatqgggqgkflsav aagnppdlvlywgqdalpgladqgaiiplddylkdvdtskffeaaynamkykgkiyglpe mvnvrvlfwnkdlfkqagldpntppktiaeldqmaakltktkngtieqmgfipwigqgvp hvmagvfgtslvdsngnpilspdknpqllnllkwevsysdkygamninkfiagmsqnssq andpfvlgkvammisgewqinankqynpklnfgvgpipqapggkpmpslmdgntwmipkg skhpqeamdfikwtmdpqriadtadkvyniapiveaakiqklnndpyfkevlnvaqkgsi yytpaakgmlstetaannafqaaqykkstpeqalknaqaeae