Chains and heterogens:
PDB Chain Sequences:
>1fa2A (A:) apipgvmpignyvslyvmlplgvvnadnvfpdkekvedelkqvkaggcdgvmvdvwwgii eakgpkqydwsayrelfqlvkkcglkiqaimsfhqcggnvgdavfipipqwilqigdknp difytnragnrnqeylslgvdnqrlfqgrtalemyrdfmesfrdnmadflkagdivdiev gcgaagelrypsypetqgwvfpgigefqcydkymvadwkeavkqagnadwempgkgagty ndtpdkteffrpngtyktdmgkffltwysnkliihgdqvleeankvfvglrvniaakvsg ihwwynhvshaaeltagfynvagrdgyrpiarmlarhhatlnftclemrdseqpaeaksa pqelvqqvlssgwkeyidvagenalprydataynqmllklrpngvnlngppklkmsglty lrlsddllqtdnfelfkkfvkkmhadldpspnaispavlersnsaitidelmeatkgsrp fpwydvtdmpvdgsnpfd