Chains and heterogens:
PDB Chain Sequences:
>1fchA (A:) satydkgyqfeeenplrdhpqpfeeglrrlqegdlpnavllfeaavqqdpkhmeawqylg ttqaeneqellaisalrrclelkpdnqtalmalavsftneslqrqaceilrdwlrytpay ahlvtpaeegaggaglgpskrilgsllsdslflevkelflaavrldptsidpdvqcglgv lfnlsgeydkavdcftaalsvrpndyllwnklgatlangnqseeavaayrralelqpgyi rsrynlgiscinlgahreavehflealnmqrksrgprgeggamseniwstlrlalsmlgq sdaygaadardlstlltmfglpq
>1fchA (A:) satydkgyqfeeenplrdhpqpfeeglrrlqegdlpnavllfeaavqqdpkhmeawqylg ttqaeneqellaisalrrclelkpdnqtalmalavsftneslqrqaceilrdwlrytpay ahlvtrilgsllsdslflevkelflaavrldptsidpdvqcglgvlfnlsgeydkavdcf taalsvrpndyllwnklgatlangnqseeavaayrralelqpgyirsrynlgiscinlga hreavehflealnmqrksggamseniwstlrlalsmlgqsdaygaadardlstlltmfgl pq
>1fchB (B:) kgyqfeeenplrdhpqpfeeglrrlqegdlpnavllfeaavqqdpkhmeawqylgttqae neqellaisalrrclelkpdnqtalmalavsftneslqrqaceilrdwlrytpayahlvt paeegaggaglgpskrilgsllsdslflevkelflaavrldptsidpdvqcglgvlfnls geydkavdcftaalsvrpndyllwnklgatlangnqseeavaayrralelqpgyirsryn lgiscinlgahreavehflealnmqrksrgprgeggamseniwstlrlalsmlgqsdayg aadardlstlltmfglpq
>1fchB (B:) kgyqfeeenplrdhpqpfeeglrrlqegdlpnavllfeaavqqdpkhmeawqylgttqae neqellaisalrrclelkpdnqtalmalavsftneslqrqaceilrdwlrytpayahlvt prilgsllsdslflevkelflaavrldptsidpdvqcglgvlfnlsgeydkavdcftaal svrpndyllwnklgatlangnqseeavaayrralelqpgyirsrynlgiscinlgahrea vehflealnmqrksgamseniwstlrlalsmlgqsdaygaadardlstlltmfglpq