Chains and heterogens:
PDB Chain Sequences:
>1fnfA (A:) plspptnlhleanpdtgvltvswersttpditgyritttptngqqgnsleevvhadqssc tfdnlspgleynvsvytvkddkesvpisdtiipavppptdlrftnigpdtmrvtwappps idltnflvryspvkneedvaelsispsdnavvltnllpgteyvvsvssvyeqhestplrg rqktgldsptgidfsditansftvhwiapratitgyrirhhpehfsgrpredrvphsrns itltnltpgteyvvsivalngreesplligqqstvsdvprdlevvaatptslliswdapa vtvryyritygetggnspvqeftvpgskstatisglkpgvdytitvyavtgrgdspassk pisinyrt