Chains and heterogens:
PDB Chain Sequences:
>4br0A (A:) mahhhhhhvgtgsnddddkspdptqdvreppalkygivldagsshtsmfvykwpadkend tgivgqhsscdvqgggissyandpskagqslvrcleqalrdvprdrhastplylgatagm rllnltspeatarvleavtqtltqypfdfrgarilsgqdegvfgwvtanyllenfikygw vgrwirprkgtlgamdlggastqitfettspsedpgnevhlrlygqhyrvythsflcygr dqillrllasalqihrfhpcwpkgystqvllqevyqspctmgqrprafngsaivslsgts natlcrdlvsrlfnisscpfsqcsfngvfqppvagnfiafsafyytvdflttvmglpvgt lkqleeateitcnqtwtelqarvpgqktrladycavamfihqllsrgyhfdersfrevvf qkkaadtavgwalgymlnltnlipadlpglrkgthfs
>4br0A (A:) palkygivldagsshtsmfvykwpadkendtgivgqhsscdvqgggissyandpskagqs lvrcleqalrdvprdrhastplylgatagmrllnltspeatarvleavtqtltqypfdfr garilsgqdegvfgwvtanyllenfikygwvgrwirprkgtlgamdlggastqitfetts psedpgnevhlrlygqhyrvythsflcygrdqillrllasalqihrfhpcwpkgystqvl lqevyqspctmgqsaivslsgtsnatlcrdlvsrlfnisscpfsqcsfngvfqppvagnf iafsafyytvdflttvmglpvgtlkqleeateitcnqtwtelqarvpgqktrladycava mfihqllsrgyhfdersfrevvfqkkaadtavgwalgymlnltnlipadlpglrkgthfs