Chains and heterogens:
PDB Chain Sequences:
>1k7iA (A:) mgknlslrqddaqhalsantssaynsvydflryhdrgdgltvngktsysidqaaaqitre nvswngtnvfgksanltfkflqsvssipsgdtgfvkfnaeqieqaklslqswsdvanltf tevtgnksanitfgnytrdasgnldygtqayayypgnyqgagsswynynqsnirnpgsee ygrqtftheighalglahpgeynagegdpsyndavyaedsyqfsimsfwgenetgadyng hyggapmiddiaaiqrlyganmttrtgdsvygfnsntdrdfytatdsskalifsvwdagg tdtfdfsgysnnqrinlnegsfsdvgglkgnvsiahgvtienaiggsgndilvgnsadni lqggagndvlyggagadtlyggagrdtfvygsgqdstvaaydwiadfqkgidkidlsafr negqlsfvqdqftgkgqevmlqwdaansitnlwlheaghssvdflvrivgqaaqsdiiv
>1k7iA (A:) antssaynsvydflryhdrgdgltvngktsysidqaaaqitrenvswngtnvfgksanlt fkflqsvssipsgdtgfvkfnaeqieqaklslqswsdvanltftevtgnksanitfgnyt rdasgnldygtqayayypgnyqgagsswynynqsnirnpgseeygrqtftheighalgla hpgeynagegdpsyndavyaedsyqfsimsfwgenetgadynghyggapmiddiaaiqrl yganmttrtgdsvygfnsntdrdfytatdsskalifsvwdaggtdtfdfsgysnnqrinl negsfsdvgglkgnvsiahgvtienaiggsgndilvgnsadnilqggagndvlyggagad tlyggagrdtfvygsgqdstvaaydwiadfqkgidkidlsafrnegqlsfvqdqftgkgq evmlqwdaansitnlwlheaghssvdflvrivgqaaqsdiiv