Chains and heterogens:
PDB Chain Sequences:
>1ekvA (A:) asssfkaadlqlemtqkphkkpgpgeplvfgktftdhmlmvewndkgwgqpriqpfqnlt lhpassslhyslqlfegmkafkgkdqqvrlfrpwlnmdrmlrsamrlclpsfdklellec irrlievdkdwvpdaagtslyvrpvlignepslgvsqprrallfvilcpvgayfpggsvt pvslladpafirawvggvgnyklggnygptvlvqqealkrgceqvlwlygpdhqltevgt mnifvywthedgvlelvtpplngvilpgvvrqslldmaqtwgefrvvertitmkqllral eegrvrevfgsgtacqvcpvhrilykdrnlhiptmengpelilrfqkelkeiqygirahe wmfpv
>1ekvB (B:) asssfkaadlqlemtqkphkkpgpgeplvfgktftdhmlmvewndkgwgqpriqpfqnlt lhpassslhyslqlfegmkafkgkdqqvrlfrpwlnmdrmlrsamrlclpsfdklellec irrlievdkdwvpdaagtslyvrpvlignepslgvsqprrallfvilcpvgayfpggsvt pvslladpafirawvggvgnyklggnygptvlvqqealkrgceqvlwlygpdhqltevgt mnifvywthedgvlelvtpplngvilpgvvrqslldmaqtwgefrvvertitmkqllral eegrvrevfgsgtacqvcpvhrilykdrnlhiptmengpelilrfqkelkeiqygirahe wmfpv