>4iwkC (C:) observed residues (from ATOM records) seelldlfnrqvtqeftasqvylsasiwfdqndwegmaaymlaesaeerehglgfvdfan krnipielqavpapvscaewsspedvwqsileleqantrsllnlaeaastchdfavmafl npfhlqqvneedkigsilakvtdenrtpgllrsldvvs