Hydrolyzed proteins, or protein hydrolysates, are acid- or enzymatically treated proteins from certain foods. It can be hydrolyzed to glucose enzymatically or with acid. Proteins can be biotinylated chemically or enzymatically. Hypotaurine is enzymatically oxidized to yield taurine by hypotaurine dehydrogenase. They are derived enzymatically from the fatty acid arachidonic acid. These enzymatically active enzyme cofactors function, respectively, in mitochondria and cell cytosol. In prokaryotes, RNase H2 is enzymatically active as a monomeric protein. Maltodextrin can be enzymatically derived from any starch. HDC is expressed as a 74 kDa polypeptide which is not enzymatically functional. Active MMP-3 cleaves the propeptide from the 92-kDa pro-MMP-9, yielding an 82-kDa enzymatically active enzyme. RPE65 is a dimer of two symmetrical, enzymatically independent subunits. Unlike the other HDAC molecules, when purified, this HDAC showed to be enzymatically active. These PAHs do not need to be enzymatically metabolized first. It is enzymatically focused solely on DNA substrates. Dextroamphetamine is liberated from lisdexamfetamine enzymatically following contact with red blood cells.