Adjective modifier

• n-terminal: This is believed to be formed by reaction and cyclization of the initial Schiff base adduct with the N-terminal valine.

Modifies a noun

• homozygote: The relative excess of valine homozygotes in sporadic CJD aged less than 50 years is unexpected.

• residue: These are both missense mutations, changing the valine residue at 287 to leucine 19 or to methionine 20.