>3gn4B (B:) observed residues (from ATOM records)
qlteeqiaefkeafslfdkdgdgtittkelgtvmrslgqnpteaelqdminevdadgngt
idfpefltmmarkmkdtdseeeireafrvfdkdgngfisaaelrhvmtnlgekltdeevd
emireadidgdgqvnyeefvtmmts