>4aiaB (B:) observed residues (from ATOM records) mnecafgtkdpvylnyhdhvwgqplydskalfkllalesqhaglswltilkkkeayeeaf ydfepekvaqmtaqdidrlmtfpnivhhrkkleaivnqaqgylkieqaygsfskflwsyv ngkpkdlqyehasdritvddtatqlskdlkqygfkflgpvtvfsfleaaglydahlkdcp skpkh