>1xb2B (B:) observed residues (from ATOM records) sasskellmklrrktgysfinckkaletcggdlkqaeswlhkqaqkegwskaarlhgrkt kegligllqegdttvlvevncetdfvsrnlkfqqlvqqvalgtllhcqnlkdqlstyskg flnsselselpagperegslkdqlalaigklgenmilkraawvkvpagfyvgsyvhgamh spslhnlvlgkygalvicetselkanladlgrrlgqhvvgmaplsvgslddepggeaetk mlsqpylldpsitlgqyvqphgvsvvdfvrfecgeg