Before revision: To date , there is little structural data available on the AGAAAAGA palindrome in the hydrophobic region (113-120) of prion proteins  , although many experimental studies have shown that this region has amyloid fibril forming properties .
After revision: To date , there is little structural data available on the AGAAAAGA palindrome in the hydrophobic region (113-120) of prion proteins due to the noncrystalline and insoluble nature of the amyloid fibril , although many experimental studies have shown that this region has amyloid fibril forming properties .