Chains and heterogens:
PDB Chain Sequences:
>2igxA (A:) ssndnielvdfqnimfygdaevgdnqqpftfildtgsanlwvpsvkcttagcltkhlyds sksrtyekdgtkvemnyvsgtvsgffskdlvtvgnlslpykfievidtngfeptytastf dgilglgwkdlsigsvdpivvelknqnkienalftfylpvhdkhtgfltiggieerfyeg pltyeklnhdlywqitldahvgnimlekancivdsgtsaitvptdflnkmlqnldvikvp flpfyvtlcnnsklptfeftsengkytlepeyylqhiedvgpglcmlniigldfpvptfi lgdpfmrkyftvfdydnhsvgialakknl