Chains and heterogens:
PDB Chain Sequences:
>1d3kA (A:) dktvrwcavseheatkcqsfrdhmksvipsdgpsvacvkkasyldciraiaaneadavtl daglvydaylapnnlkpvvaefygskedpqtfyyavavvkkdsgfqmnqlrgkkschtgl grsagwnipigllycdlpeprkplekavanffsgscapcadgtdfpqlcqlcpgcgcstl nqyfgysgafkclkdgagdvafvqhstifenlankadrdqyellcldntrkpvdeykdch laqvpshtvvarsmggkedliwellnqaqehfgkdkskefqlfssphgkdllfkdsahgf lkvpprmdakmylgyeyvtairnlregtc