Chains and heterogens:
PDB Chain Sequences:
>6yasA (A:) afahfvlihtichgawiwhklkpllealghkvtaldlaasgvdprqieeigsfdeysepl ltflealppgekvilvgescgglniaiaadkycekiaaavfhnsvlpdtehcpsyvvdkl mevfpdwkdttyftytkdgkeitglklgftllrenlytlcgpeeyelakmltrkgslfqn ilakrpfftkegygsikkiyvwtdqdeiflpefqlwqienykpdkvykveggdhklqltk tkeiaeilqevadtyn