Chains and heterogens:
PDB Chain Sequences:
>1b3eA (A:) ktvrwcavseheatkcqsfrdhmksvipsdgpsvacvkkasyldciraiaaneadavtld aglvydaylapnnlkpvvaefygskedpqtfyyavavvkkdsgfqmnqlrgkkschtglg rsagwnipigllycdlpeprkplekavanffsgscapcadgtdfpqlcqlcpgcgcstln qyfgysgafkclkdgagdvafvkhstifenlankadrdnyellcldntrkpvdeykdchl aqvpshtvvarsmggkedliwellnqaqehfgkdkskefqlfssphgkdllfkdsahgfl kvpprmdakmylgyeyvtairnlregtcpe