>1ctrA (A:) observed residues (from ATOM records)
adqlteeqiaefkeafslfdkdgdgtittkelgtvmrslgqnpteaelqdminevdadgn
gtidfpefltmmarkseeeireafrvfdkdgngyisaaelrhvmtnlgekltdeevdemi
readidgdgqvnyeefvqmmta