Chains and heterogens:
PDB Chain Sequences:
>1k7qA (A:) mgknlslrqddaqhalsantssaynsvydflryhdrgdgltvngktsysidqaaaqitre nvswngtnvfgksanltfkflqsvssipsgdtgfvkfnaeqieqaklslqswsdvanltf tevtgnksanitfgnytrdasgnldygtqayayypgnyqgagsswynynqsnirnpgsee ygrqtfthaighalglahpgeynagegdpsyndavyaedsyqfsimsywgenetgadyng hyggapmiddiaaiqrlyganmttrtgdsvygfnsntdrdfytatdsskalifsvwdagg tdtfdfsgysnnqrinlnegsfsdvgglkgnvsiahgvtienaiggsgndilvgnsadni lqggagndvlyggagadtlyggagrdtfvygsgqdstvaaydwiadfqkgidkidlsafr negqlsfvqdqftgkgqevmlqwdaansitnlwlheaghssvdflvrivgqaaqsdiiv
>1k7qA (A:) antssaynsvydflryhdrgdgltvngktsysidqaaaqitrenvswngtnvfgksanlt fkflqsvssipsgdtgfvkfnaeqieqaklslqswsdvanltftevtgnksanitfgnyt rdasgnldygtqayayypgnyqgagsswynynqsnirnpgseeygrqtfthaighalgla hpgeynagegdpsyndavyaedsyqfsimsywgenetgadynghyggapmiddiaaiqrl yganmttrtgdsvygfnsntdrdfytatdsskalifsvwdaggtdtfdfsgysnnqrinl negsfsdvgglkgnvsiahgvtienaiggsgndilvgnsadnilqggagndvlyggagad tlyggagrdtfvygsgqdstvaaydwiadfqkgidkidlsafrnegqlsfvqdqftgkgq evmlqwdaansitnlwlheaghssvdflvrivgqaaqsdiiv