Chains and heterogens:
PDB Chain Sequences:
>1k7gA (A:) mgknlslrqddaqhalsantssaynsvydflryhdrgdgltvngktsysidqaaaqitre nvswngtnvfgksanltfkflqsvssipsgdtgfvkfnaeqieqaklslqswsdvanltf tevtgnksanitfgnytrdasgnldygtqayayypgnyqgagsswynynqsnirnpgsee ygrqtftheighalglahpgeynagegdpsyndavyaedsyqfsimsywgenetgadyng hyggapmiddiaaiqrlyganmttrtgdsvygfnsntdrdfytatdsskalifsvwdagg tdtfdfsgysnnqrinlnegsfsdvgglkgnvsiahgvtienaiggsgndilvgnsadni lqggagndvlyggagadtlyggagrdtfvygsgqdstvaaydwiadfqkgidkidlsafr negqlsfvqdqftgkgqevmlqwdaansitnlwlheaghssvdflvrivgqaaqsdiiv
>1k7gA (A:) nsvydflryhdrgdgltvngktsysidqaaaqitrenvswngtnvfgksanltfkflqsv ssipsgdtgfvkfnaeqieqaklslqswsdvanltftevtgnksanitfgnytrdasgnl dygtqayayypgnyqgagsswynynqsnirnpgseeygrqtftheighalglahpgeyna gegdpsyndavyaedsyqfsimsywgenetgadynghyggapmiddiaaiqrlyganmtt rtgdsvygfnsntdrdfytatdsskalifsvwdaggtdtfdfsgysnnqrinlnegsfsd vgglkgnvsiahgvtienaiggsgndilvgnsadnilqggagndvlyggagadtlyggag rdtfvygsgqdstvaaydwiadfqkgidkidlsafrnegqlsfvqdqftgkgqevmlqwd aansitnlwlheaghssvdflvrivgqaaqsdiiv