Chains and heterogens:
PDB Chain Sequences:
>1bwmA (A:) avtqsprnkvavtggkvtlscnqtnnhnnmywyrqdtghglrlihysygagstekgdipd gykasrpsqenfslilelatpsqtsvyfcasggqgraeqffgpgtrltvlgsdykddddk rsggggsggggsggsgaqqqvrqspqsltvwegettilncsyedstfdyfpwyrqfpgks palliaislvsnkkedgrftiffnkrekklslhitdsqpgdsatyfcaatgsfnkltfga gtrlavspy