Chains and heterogens:
PDB Chain Sequences:
>1yscA (A:) kikdpkilgidpnvtqytgyldvededkhfffwtfesrndpakdpvilwlnggpgcsslt glffelgpssigpdlkpignpyswnsnatvifldqpvnvgfsysgssgvsntvaagkdvy nflelffdqfpeyvnkgqdfhiagesyaghyipvfaseilshkdrnfnltsvligngltd pltqynyyepmacgeggepsvlpseecsamedslerclgliescydsqsvwscvpatiyc nnaqlapyqrtgrnvydirkdceggnlcyptlqdiddylnqdyvkeavgaevdhyescnf dinrnflfagdwmkpyhtavtdllnqdlpilvyagdkdficnwlgnkawtdvlpwkydee fasqkvrnwtasitdevagevksykhftylrvfngghmvpfdvpenalsmvnewihggfs l