>2r28A (A:) observed residues (from ATOM records)
teeqiaefkeafslfdkdgdgtittkelgtvmrslgqnpteaelqdminevdadgngtid
fpefltmmarkmkdtdseeeireafrvfdkdgngyisaaelrhvmtnlgekltdeevdem
ireadidgdgqvnyeefvqmmta