Chains and heterogens:
PDB Chain Sequences:
>2rfhA (A:) arstntfnyatyhtldeiydfmdllvaehpqlvsklqigrsyegrpiyvlkfstggsnrp aiwidlgihsrewitqatgvwfakkftedygqdpsftaildsmdifleivtnpdgfafth sqnrlwrktrsvtssslcvgvdanrnwdagfgkagassspcsetyhgkyansevevksiv dfvkdhgnfkaflsihsysqlllypygyttqsipdktelnqvaksavaalkslygtsyky gsiittiyqasggsidwsynqgikysftfelrdtgrygfllpasqiiptaqetwlgvlti mehtvnn