Chains and heterogens:
PDB Chain Sequences:
>1bl6A (A:) gsshhhhhhssglvprgshmsqerptfyrqelnktiwevperyqnlspvgsgaygsvcaa fdtktglrvavkklsrpfqsiihakrtyrelrllkhmkhenviglldvftparsleefnd vylvthlmgadlnnivkcqkltddhvqfliyqilrglkyihsadiihrdlkpsnlavned celkildfglarhtddemtgyvatrwyrapeimlnwmhynqtvdiwsvgcimaelltgrt lfpgtdhidqlklilrlvgtpgaellkkissesarnyiqsltqmpkmnfanvfiganpla vdllekmlvldsdkritaaqalahayfaqyhdpddepvadpydqsfesrdllidewkslt ydevisfvpppldqeemes
>1bl6A (A:) erptfyrqelnktiwevperyqnlspvgsgaygsvcaafdtktglrvavkklsrpfqsii hakrtyrelrllkhmkhenviglldvftparsleefndvylvthlmgadlnnivkcqklt ddhvqfliyqilrglkyihsadiihrdlkpsnlavnedcelkildfglarhtddemtgyv atrwyrapeimlnwmhynqtvdiwsvgcimaelltgrtlfpgtdhidqlklilrlvgtpg aellkkissesarnyiqsltqmpkmnfanvfiganplavdllekmlvldsdkritaaqal ahayfaqyhdpddepvadpydqsfesrdllidewksltydevisfvpppld