Chains and heterogens:
PDB Chain Sequences:
>4xqsF (F:) mgsshhhhhhssgrenlyfqghmngdqnsdvyaqekqdfvqhfsqivrvltedemghpei gdaiarlkevleynaiggkynrgltvvvafrelveprkqdadslqrawtvgwcvellqaf flvaddimdssltrrgqicwyqkpgvgldaindanlleaciyrllklycreqpyylnlie lflqssyqteigqtldlltapqgnvdlvrftekryksivkyktafysfylpiaaamymag idgekehanakkillemgeffqiqddyldlfgdpsvtgkigtdiqdnkcswlvvqclqra tpeqyqilkenygqkeaekvarvkalyeeldlpavflqyeedsyshimalieqyaaplpp avflglarkiykrrk
>4xqsF (F:) aqekqdfvqhfsqivrvltedemghpeigdaiarlkevleynaiggkynrgltvvvafre lveprkqdadslqrawtvgwcvellqafflvaddimdssltrrgqicwyqkpgvgldain danlleaciyrllklycreqpyylnlielflqssyqteigqtldlltapqgnvdlvrfte kryksivkyktafysfylpiaaamymagidgekehanakkillemgeffqiqddyldlfg dpsvtgkigtdiqdnkcswlvvqclqratpeqyqilkenygqkeaekvarvkalyeeldl pavflqyeedsyshimalieqyaaplppavflglarkiy