Chains and heterogens:
PDB Chain Sequences:
>1vi7A (A:) mslmeswlipaapvtvveeikksrfitmlahtdgveaakafvesvraehpdarhhcvawv agapddsqqlgfsddgepagtagkpmlaqlmgsgvgeitavvvryyggillgtgglvkay gggvnqalrqlttqrktplteytlqceyhqltgieallgqcdgkiinsdyqafvllrval paakvaefsakladfsrgslqllaieeeggshhhhhh
>1vi7A (A:) lmeswlipaapvtvveeikksrfitmlahtdgveaakafvesvraehpdarhhcvawvag apddsqqlgfsddgepagtagkpmlaqlmgsgvgeitavvvryyggillgtgglvkaygg gvnqalrqlttqrktplteytlqceyhqltgieallgqcdgkiinsdyqafvllrvalpa akvaefsakladfsrgslqllaieee