Chains and heterogens:
PDB Chain Sequences:
>4itxA (A:) madkkldtqlvnagrskkytlgavnsviqrasslvfdsveakkhatrnrangelfygrrg tlthfslqqamceleggagcvlfpcgaaavansilafieqgdhvlmtntayessqdfcsk ilsklgvttswfdpligadivkhlqpntkivflespgsitmevhdvpaivaavrsvvpda iimidntwaagvlfkaldfgidvsiqaatkylvghsdamigtavcnarcweqlrenaylm gqmvdadtayitsrglrtlgvrlrqhhesslkvaewlaehpqvarvnhpalpgskghefw krdftgssglfsfvlkkklnneelanyldnfslfsmayswggyeslilanqpehiaairp qgeidfsgtlirlhigledvddliadldagfariv
>4itxA (A:) kldtqlvnagrskkytlgavnsviqrasslvfdsveakkhatrnrangelfygrrgtlth fslqqamceleggagcvlfpcgaaavansilafieqgdhvlmtntayessqdfcskilsk lgvttswfdpligadivkhlqpntkivflespgsitmevhdvpaivaavrsvvpdaiimi dntwaagvlfkaldfgidvsiqaatkylvghsdamigtavcnarcweqlrenaylmgqmv dadtayitsrglrtlgvrlrqhhesslkvaewlaehpqvarvnhpalpgskghefwkrdf tgssglfsfvlkkklnneelanyldnfslfsmayswggyeslilanqpehiaairpqgei dfsgtlirlhigledvddliadldagfariv
>4itxB (B:) madkkldtqlvnagrskkytlgavnsviqrasslvfdsveakkhatrnrangelfygrrg tlthfslqqamceleggagcvlfpcgaaavansilafieqgdhvlmtntayessqdfcsk ilsklgvttswfdpligadivkhlqpntkivflespgsitmevhdvpaivaavrsvvpda iimidntwaagvlfkaldfgidvsiqaatkylvghsdamigtavcnarcweqlrenaylm gqmvdadtayitsrglrtlgvrlrqhhesslkvaewlaehpqvarvnhpalpgskghefw krdftgssglfsfvlkkklnneelanyldnfslfsmayswggyeslilanqpehiaairp qgeidfsgtlirlhigledvddliadldagfariv
>4itxB (B:) kkldtqlvnagrskkytlgavnsviqrasslvfdsveakkhatrnrangelfygrrgtlt hfslqqamceleggagcvlfpcgaaavansilafieqgdhvlmtntayessqdfcskils klgvttswfdpligadivkhlqpntkivflespgsitmevhdvpaivaavrsvvpdaiim idntwaagvlfkaldfgidvsiqaatkylvghsdamigtavcnarcweqlrenaylmgqm vdadtayitsrglrtlgvrlrqhhesslkvaewlaehpqvarvnhpalpgskghefwkrd ftgssglfsfvlkkklnneelanyldnfslfsmayswggyeslilanqpehiaairpqge idfsgtlirlhigledvddliadldagfariv