Chains and heterogens:
PDB Chain Sequences:
>1sup_ (-) aqsvpygvsqikapalhsqgytgsnvkvavidsgidsshpdlkvaggasmvpsetnpfqd nnshgthvagtvaalnnsigvlgvapsaslyavkvlgadgsgqyswiingiewaiannmd vinmslggpsgsaalkaavdkavasgvvvvaaagnegtsgssstvgypgkypsviavgav dssnqrasfssvgpeldvmapgvsiqstlpgnkygayngtsmasphvagaaalilskhpn wtntqvrsslentttklgdsfyygkglinvqaaaq