>1y1vS (S:) observed residues (from ATOM records) ndgvdtaiyhhklrdqvlkalydvlakesehppqsilhtakaiesemnkvnncdtneaay karyriiysnvisknnpdlkhkiangditpeflatcdakdlapaplkqkieeiakqnlyn aqgatiersvtdrftcgkckekkvsyyqlqtrsadeplttfctceacgnrwkfs