>1sg2A (A:) observed residues (from ATOM records)
adkiaivnmgslfqqvaqktgvsntlenefkgraselqrmetdlqakmkklqsmkagsdr
tklekdvmaqrqtfaqkaqafeqdrarrsneergklvtriqtavksvansqdidlvvdan
avaynssdvkditadvlkqvk