Chains and heterogens:
PDB Chain Sequences:
>1fprA (A:) gfweefeslqkqevknlhqrlegqrpenkgknryknilpfdhsrvilqgrdsnipgsdyi nanyiknqllgpdenaktyiasqgcleatvndfwqmawqensrvivmttrevekgrnkcv pywpevgmqraygpysvtncgehdtteyklrtlqvspldngdlireiwhyqylswpdhgv psepggvlsfldqinqrqeslphagpiivhssagigrtgtiividmlmenistkgldcdi diqktiqmvraqrsgmvqteaqykfiyvaiaqfiettkkklevl