>4da9A (A:) observed residues (from ATOM records)
mmtqkarpvaivtggrrgiglgiaralaasgfdiaitgigdaegvapviaelsglgarvi
flradladlsshqatvdavvaefgridclvnnagddfldlkpenfdtivgvnlrgtvfft
qavlkamlasdarasrsiinitsverldycmskaglaafsqglalrlaetgiavfevrpg
iirsrwgepedignivaglaggqfgfatgsviqadggls