Chains and heterogens:
PDB Chain Sequences:
>2w7iA (A:) mkylpqqdpqvfaaieqerkrqhakieliasenfvsravmeaqgsvltnkyaegypgrry aggceyvdiveelarerakqlfgaehanvqphsgaqanmavyftvlehgdtvlgmnlshg ghlthgspvnfsgvqynfvaygvdpethvidyddvrekarlhrpklivaaasaypriidf akfreiadevgaylmvdmahiaglvaaglhpnpvpyahfvtttthktlrgprggmilcqe qfakqidkaifpgiqggplmhviaakavafgealqddfkayakrvvdnakrlasalqneg ftlvsggtdnhlllvdlrpqqltgktaekvldevgitvnkntipydpespfvtsgirigt aavttrgfgleemdeiaaiiglvlknvgseqaleearqrvaaltd