>4br2A (A:) observed residues (from ATOM records)
palkygivldagsshtsmfvykwpadkendtgivgqhsscdvqgggissyandpskagqs
lvrcleqalrdvprdrhastplylgatagmrllnltspeatarvleavtqtltqypfdfr
garilsgqdegvfgwvtanyllenfikygwvgrwirprkgtlgamdlggastqitfetts
psedpgnevhlrlygqhyrvythsflcygrdqillrllasalqihrfhpcwpkgystqvl
lqevyqspctmgqrsaivslsgtsnatlcrdlvsrlfnisscpfsqcsfngvfqppvagn
fiafsafyytvdflttvmglpvgtlkqleeateitcnqtwtelqarvpgqktrladycav
amfihqllsrgyhfdersfrevvfqkkaadtavgwalgymlnltnlipadlpglrkgthf