Chains and heterogens:
PDB Chain Sequences:
>1uasA (A:) fenglgrtpqmgwnswnhfycgineqiiretadalvntglaklgyqyvniddcwaeysrd sqgnfvpnrqtfpsgikaladyvhakglklgiysdagsqtcsnkmpgsldheeqdvktfa swgvdylkydncndagrsvmerytrmsnamktygkniffslcewgkenpatwagrmgnsw rttgdiadnwgsmtsradendqwaayagpggwndpdmlevgnggmseaeyrshfsiwala kaplligcdvrsmsqqtknilsnseviavnqdslgvqgkkvqsdnglevwagplsnnrka vvlwnrqsyqatitahwsniglagsvavtardlwahssfaaqgqisasvaphdckmyvlt pn