Generalized anxiety disorder symptoms include: 1  Restlessness or feeling wound-up or on edge. 2  Being easily fatigued. 3  Difficulty concentrating or having their minds go blank. 4  Irritability. Muscle tension.  Difficulty controlling the 1  worry. Sleep problems (difficulty falling or staying asleep or restless, unsatisfying  sleep)
Protein Properties: Binding Sites [edit]. A binding site is a position on a protein that binds to an incoming molecule that is smaller in size comparatively, called ligand. In proteins, binding sites are small pockets on the tertiary structure where ligands bind to it using weak forces (non-covalent bonding).
In some enzymes, no amino acids are directly involved in catalysis; instead, the enzyme contains sites to bind and orient catalytic cofactors. Enzyme structures may also contain allosteric sites where the binding of a small molecule causes a conformational change that increases or decreases activity.ome household products use enzymes to speed up chemical reactions: enzymes in biological washing powders break down protein, starch or fat stains on clothes, and enzymes in meat tenderizer break down proteins into smaller molecules, making the meat easier to chew.