Chains and heterogens:
PDB Chain Sequences:
>1h4sA (A:) kgltpqsqdfsewyleviqkaeladygpvrgtivvrpygyaiweniqqvldrmfketghq nayfplfipmsflrkeaehvegfspelavvthaggeeleeplavrptsetvigymwskwi rswrdlpqllnqwgnvvrwemrtrpflrtseflwqeghtahatreeaeeevrrmlsiyar lareyaaipvieglktekekfagavytttiealmkdgkalqagtshylgenfarafdikf qdrdlqvkyvhttswglswrfigaiimthgddrglvlpprlapiqvvivpiykdesrerv leaaqglrqallaqglrvhlddrdqhtpgykfhewelkgvpfrvelgpkdleggqavlas rlggketlplaalpealpgkldafheelyrralafredhtrkvdtyeafkeavqegfala fhcgdkacerliqeettattrcvpfeaepeegfcvrcgrpsaygkrvvfakay
>1h4sB (B:) kgltpqsqdfsewyleviqkaeladygpvrgtivvrpygyaiweniqqvldrmfketghq nayfplfipmsflrkeaehvegfspelavvthaggeeleeplavrptsetvigymwskwi rswrdlpqllnqwgnvvrwemrtrpflrtseflwqeghtahatreeaeeevrrmlsiyar lareyaaipvieglktekekfagavytttiealmkdgkalqagtshylgenfarafdikf qdrdlqvkyvhttswglswrfigaiimthgddrglvlpprlapiqvvivpiykdesrerv leaaqglrqallaqglrvhlddrdqhtpgykfhewelkgvpfrvelgpkdleggqavlas rlggketlplaalpealpgkldafheelyrralafredhtrkvdtyeafkeavqegfala fhcgdkacerliqeettattrcvpfeaepeegfcvrcgrpsaygkrvvfakay