Chains and heterogens:
PDB Chain Sequences:
>4an4A (A:) mhhhhhhssgvdlgtenlyfqsmralfitspglshilptvplaqalralghevryatggd iravaeaglcavdvspgvnyaklfvpddtdvtdpmhseglgegffaemfarvsavavdga lrtarswrpdlvvhtptqgagpltaaalqlpcvelplgpadsepglgalirramskdyer hgvtgeptgsvrltttppsveallpedrrspgawpmryvpynggavlpdwlppaagrrri avtlgsidalsggiaklaplfsevadvdaefvltlgggdlallgelpanvrvvewiplga lletcdaiihhggsgtlltalaagvpqcviphgsyqdtnrdvltglgigfdaeagslgae qcrrllddaglreaalrvrqemsempppaetaaklvalag
>4an4A (A:) qsmralfitspglshilptvplaqalralghevryatggdiravaeaglcavdvspgvny aklfvpddtgegffaemfarvsavavdgalrtarswrpdlvvhtptqgagpltaaalqlp cvelplgpadsepglgalirramskdyerhgvtgeptgsvrltttppsveallpedrrsp gawpmryvpynggavlpdwlppaagrrriavtlgaklaplfsevadvdaefvltlgggdl allgelpanvrvvewiplgalletcdaiihhggsgtlltalaagvpqcviphgsdtnrdv ltglgigfdaeagslgaeqcrrllddaglreaalrvrqemsempppaetaaklvalag
>4an4B (B:) mhhhhhhssgvdlgtenlyfqsmralfitspglshilptvplaqalralghevryatggd iravaeaglcavdvspgvnyaklfvpddtdvtdpmhseglgegffaemfarvsavavdga lrtarswrpdlvvhtptqgagpltaaalqlpcvelplgpadsepglgalirramskdyer hgvtgeptgsvrltttppsveallpedrrspgawpmryvpynggavlpdwlppaagrrri avtlgsidalsggiaklaplfsevadvdaefvltlgggdlallgelpanvrvvewiplga lletcdaiihhggsgtlltalaagvpqcviphgsyqdtnrdvltglgigfdaeagslgae qcrrllddaglreaalrvrqemsempppaetaaklvalag
>4an4B (B:) qsmralfitspglshilptvplaqalralghevryatggdiravaeaglcavdvspgvny aklfegffaemfarvsavavdgalrtarswrpdlvvhtptqgagpltaaalqlpcvelpl gpadsepglgalirramskdyerhgvtgeptgsvrltttppsveallpedrrspgawpmr yvpynggavlpdwlppaagrrriavtlgsidalsggiaklaplfsevadvdaefvltlgg gdlallgelpanvrvvewiplgalletcdaiihhggsgtlltalaagvpqcviphdtnrd vltglgigfdaeagslgaeqcrrllddaglreaalrvrqemsempppaetaaklvalag
>4an4C (C:) mhhhhhhssgvdlgtenlyfqsmralfitspglshilptvplaqalralghevryatggd iravaeaglcavdvspgvnyaklfvpddtdvtdpmhseglgegffaemfarvsavavdga lrtarswrpdlvvhtptqgagpltaaalqlpcvelplgpadsepglgalirramskdyer hgvtgeptgsvrltttppsveallpedrrspgawpmryvpynggavlpdwlppaagrrri avtlgsidalsggiaklaplfsevadvdaefvltlgggdlallgelpanvrvvewiplga lletcdaiihhggsgtlltalaagvpqcviphgsyqdtnrdvltglgigfdaeagslgae qcrrllddaglreaalrvrqemsempppaetaaklvalag
>4an4C (C:) qsmralfitspglshilptvplaqalralghevryatggdiravaeaglcavdvspgvny aklfvpffaemfarvsavavdgalrtarswrpdlvvhtptqgagpltaaalqlpcvelpl gpadgalirramskdyerhgvtgeptgsvrltttppsveallpspgawpmryvpynggav lpdwlppaagrrriavtlgiaklaplfsevadvdaefvltlgggdlallgelpanvrvve wiplgalletcdaiihhggsgtlltalaagvpqcviphtnrdvltglgiqcrrllddagl reaalrvrqemsempppaetaaklvala
>4an4D (D:) mhhhhhhssgvdlgtenlyfqsmralfitspglshilptvplaqalralghevryatggd iravaeaglcavdvspgvnyaklfvpddtdvtdpmhseglgegffaemfarvsavavdga lrtarswrpdlvvhtptqgagpltaaalqlpcvelplgpadsepglgalirramskdyer hgvtgeptgsvrltttppsveallpedrrspgawpmryvpynggavlpdwlppaagrrri avtlgsidalsggiaklaplfsevadvdaefvltlgggdlallgelpanvrvvewiplga lletcdaiihhggsgtlltalaagvpqcviphgsyqdtnrdvltglgigfdaeagslgae qcrrllddaglreaalrvrqemsempppaetaaklvalag
>4an4D (D:) smralfitspglshilptvplaqalralghevryatggdiravaeaglcavdvspgvnya klegffaemfarvsavavdgalrtarswrpdlvvhtptqgagpltaaalqlpcvelplgp adgalirramskdyerhgvtgeptgsvrltttppsveallpedrrspgawpmryvpyngg avlpdwlppaagrrriavtlgsidaliaklaplfsevadvdaefvltlgggdlallgpan vrvvewiplgalletcdaiihhggsgtlltalaagvpqcviphgdtnrdvltglgigfda eagslgaeqcrrllddaglreaalrvrqemsempppaetaaklvalag