Chains and heterogens:
PDB Chain Sequences:
>1a9u_ (-) gsshhhhhhssglvprgshmsqerptfyrqelnktiwevperyqnlspvgsgaygsvcaa fdtktglrvavkklsrpfqsiihakrtyrelrllkhmkhenviglldvftparsleefnd vylvthlmgadlnnivkcqkltddhvqfliyqilrglkyihsadiihrdlkpsnlavned celkildfglarhtddemtgyvatrwyrapeimlnwmhynqtvdiwsvgcimaelltgrt lfpgtdhidqlklilrlvgtpgaellkkissesarnyiqsltqmpkmnfanvfiganpla vdllekmlvldsdkritaaqalahayfaqyhdpddepvadpydqsfesrdllidewkslt ydevisfvpppldqeemes
>1a9u_ (-) erptfyrqelnktiwevperyqnlspvgsgaygsvcaafdtktglrvavkklsrpfqsii hakrtyrelrllkhmkhenviglldvftparsleefndvylvthlmgadlnnivkcqklt ddhvqfliyqilrglkyihsadiihrdlkpsnlavnedcelkildfglarhtddemtgyv atrwyrapeimlnwmhynqtvdiwsvgcimaelltgrtlfpgtdhidqlklilrlvgtpg aellkkissesarnyiqsltqmpkmnfanvfiganplavdllekmlvldsdkritaaqal ahayfaqyhdpddepvadpydqsfesrdllidewksltydevisfvpppld