Chains and heterogens:
PDB Chain Sequences:
>1f4aA (A:) itdslavvlqrrdwenpgvtqlnrlaahppfaswrnseeartdrpsqqlrslngewrfaw fpapeavpeswlecdlpeadtvvvpsnwqmhgydapiytnvtypitvnppfvptenptgc ysltfnvdeswlqegqtriifdgvnsafhlwcngrwvgygqdsrlpsefdlsaflragen rlavmvlrwsdgsyledqdmwrmsgifrdvsllhkpttqisdfhvatrfnddfsravlea evqmcgelrdylrvtvslwqgetqvasgtapfggeiiderggyadrvtlrlnvenpklws aeipnlyravvelhtadgtlieaeacdvgfrevriengllllngkpllirgvnrhehhpl hgqvmdeqtmvqdillmkqnnfnavrcshypnhplwytlcdryglyvvdeaniethgmvp mnrltddprwlpamservtrmvqrdrnhpsviiwslgnesghganhdalyrwiksvdpsr pvqyegggadttatdiicpmyarvdedqpfpavpkwsikkwlslpgetrplilceyaham gnslggfakywqafrqyprlqggfvwdwvdqslikydengnpwsayggdfgdtpndrqfc mnglvfadrtphpalteakhqqqffqfrlsgqtievtseylfrhsdnellhwmvaldgkp lasgevpldvapqgkqlielpelpqpesagqlwltvrvvqpnatawseaghisawqqwrl aenlsvtlpaashaiphlttsemdfcielgnkrwqfnrqsgflsqmwigdkkqlltplrd qftrapldndigvseatridpnawverwkaaghyqaeaallqctadtladavlittahaw qhqgktlfisrktyridgsgqmaitvdvevasdtphpariglncqlaqvaervnwlglgp qenypdrltaacfdrwdlplsdmytpyvfpsenglrcgtrelnygphqwrgdfqfnisry sqqqlmetshrhllhaeegtwlnidgfhmgiggddswspsvsaefqlsagryhyqlvwcq k
>1f4aB (B:) itdslavvlqrrdwenpgvtqlnrlaahppfaswrnseeartdrpsqqlrslngewrfaw fpapeavpeswlecdlpeadtvvvpsnwqmhgydapiytnvtypitvnppfvptenptgc ysltfnvdeswlqegqtriifdgvnsafhlwcngrwvgygqdsrlpsefdlsaflragen rlavmvlrwsdgsyledqdmwrmsgifrdvsllhkpttqisdfhvatrfnddfsravlea evqmcgelrdylrvtvslwqgetqvasgtapfggeiiderggyadrvtlrlnvenpklws aeipnlyravvelhtadgtlieaeacdvgfrevriengllllngkpllirgvnrhehhpl hgqvmdeqtmvqdillmkqnnfnavrcshypnhplwytlcdryglyvvdeaniethgmvp mnrltddprwlpamservtrmvqrdrnhpsviiwslgnesghganhdalyrwiksvdpsr pvqyegggadttatdiicpmyarvdedqpfpavpkwsikkwlslpgetrplilceyaham gnslggfakywqafrqyprlqggfvwdwvdqslikydengnpwsayggdfgdtpndrqfc mnglvfadrtphpalteakhqqqffqfrlsgqtievtseylfrhsdnellhwmvaldgkp lasgevpldvapqgkqlielpelpqpesagqlwltvrvvqpnatawseaghisawqqwrl aenlsvtlpaashaiphlttsemdfcielgnkrwqfnrqsgflsqmwigdkkqlltplrd qftrapldndigvseatridpnawverwkaaghyqaeaallqctadtladavlittahaw qhqgktlfisrktyridgsgqmaitvdvevasdtphpariglncqlaqvaervnwlglgp qenypdrltaacfdrwdlplsdmytpyvfpsenglrcgtrelnygphqwrgdfqfnisry sqqqlmetshrhllhaeegtwlnidgfhmgiggddswspsvsaefqlsagryhyqlvwcq k
>1f4aC (C:) itdslavvlqrrdwenpgvtqlnrlaahppfaswrnseeartdrpsqqlrslngewrfaw fpapeavpeswlecdlpeadtvvvpsnwqmhgydapiytnvtypitvnppfvptenptgc ysltfnvdeswlqegqtriifdgvnsafhlwcngrwvgygqdsrlpsefdlsaflragen rlavmvlrwsdgsyledqdmwrmsgifrdvsllhkpttqisdfhvatrfnddfsravlea evqmcgelrdylrvtvslwqgetqvasgtapfggeiiderggyadrvtlrlnvenpklws aeipnlyravvelhtadgtlieaeacdvgfrevriengllllngkpllirgvnrhehhpl hgqvmdeqtmvqdillmkqnnfnavrcshypnhplwytlcdryglyvvdeaniethgmvp mnrltddprwlpamservtrmvqrdrnhpsviiwslgnesghganhdalyrwiksvdpsr pvqyegggadttatdiicpmyarvdedqpfpavpkwsikkwlslpgetrplilceyaham gnslggfakywqafrqyprlqggfvwdwvdqslikydengnpwsayggdfgdtpndrqfc mnglvfadrtphpalteakhqqqffqfrlsgqtievtseylfrhsdnellhwmvaldgkp lasgevpldvapqgkqlielpelpqpesagqlwltvrvvqpnatawseaghisawqqwrl aenlsvtlpaashaiphlttsemdfcielgnkrwqfnrqsgflsqmwigdkkqlltplrd qftrapldndigvseatridpnawverwkaaghyqaeaallqctadtladavlittahaw qhqgktlfisrktyridgsgqmaitvdvevasdtphpariglncqlaqvaervnwlglgp qenypdrltaacfdrwdlplsdmytpyvfpsenglrcgtrelnygphqwrgdfqfnisry sqqqlmetshrhllhaeegtwlnidgfhmgiggddswspsvsaefqlsagryhyqlvwcq k
>1f4aD (D:) itdslavvlqrrdwenpgvtqlnrlaahppfaswrnseeartdrpsqqlrslngewrfaw fpapeavpeswlecdlpeadtvvvpsnwqmhgydapiytnvtypitvnppfvptenptgc ysltfnvdeswlqegqtriifdgvnsafhlwcngrwvgygqdsrlpsefdlsaflragen rlavmvlrwsdgsyledqdmwrmsgifrdvsllhkpttqisdfhvatrfnddfsravlea evqmcgelrdylrvtvslwqgetqvasgtapfggeiiderggyadrvtlrlnvenpklws aeipnlyravvelhtadgtlieaeacdvgfrevriengllllngkpllirgvnrhehhpl hgqvmdeqtmvqdillmkqnnfnavrcshypnhplwytlcdryglyvvdeaniethgmvp mnrltddprwlpamservtrmvqrdrnhpsviiwslgnesghganhdalyrwiksvdpsr pvqyegggadttatdiicpmyarvdedqpfpavpkwsikkwlslpgetrplilceyaham gnslggfakywqafrqyprlqggfvwdwvdqslikydengnpwsayggdfgdtpndrqfc mnglvfadrtphpalteakhqqqffqfrlsgqtievtseylfrhsdnellhwmvaldgkp lasgevpldvapqgkqlielpelpqpesagqlwltvrvvqpnatawseaghisawqqwrl aenlsvtlpaashaiphlttsemdfcielgnkrwqfnrqsgflsqmwigdkkqlltplrd qftrapldndigvseatridpnawverwkaaghyqaeaallqctadtladavlittahaw qhqgktlfisrktyridgsgqmaitvdvevasdtphpariglncqlaqvaervnwlglgp qenypdrltaacfdrwdlplsdmytpyvfpsenglrcgtrelnygphqwrgdfqfnisry sqqqlmetshrhllhaeegtwlnidgfhmgiggddswspsvsaefqlsagryhyqlvwcq k