Chains and heterogens:
PDB Chain Sequences:
>1n75A (A:) mvvtriapsptgdphvgtayialfnyawarrnggrfivriedtdraryvpgaeerilaal kwlglsydegpdvggphgpyrqserlplyqkyaeellkrgwayrafetpeeleqirkekg gydgrarnippeeaeerarrgephvirlkvprpgttevkdelrgvvvydnqeipdvvllk sdgyptyhlanvvddhlmgvtdviraeewlvstpihvllyrafgweaprfyhmpllrnpd ktkiskrkshtsldwykaegflpealrnylclmgfsmpdgreiftleefiqaftwervsl ggpvfdleklrwmngkyirevlsleevaervkpflreaglsweseaylrravelmrprfd tlkefpekarylftedypvsekaqrkleeglpllkelyprlraqeewteaaleallrgfa aekgvklgqvaqplraaltgsletpglfeilallgkeralrrlerala