KX Modifier - SPECIFIC REQUIRED DOCUMENTATION ON FILE. KX -- SPECIFIC REQUIRED DOCUMENTATION ON FILE. (EFFECTIVE DATE 7/1/2002) This modifier may be used to indicate that specific required documentation is on file in the patient's medical record. Documentation must be submitted upon request.
Proteins are made of amino acids hooked end-to-end like beads on a necklace. To simulate. a protein, you will make a model of your protein using a long chenille stem (the fuzzy. covered wire) and colored beads.
Proteins are made up of amino acids. If you want to know more, an amino acid is made of an amino group an R group (side chain) a carboxylic acid group, and a central carboâ¦n These form hyrdogen (weak) bonds with one another, creating the four (primary, secondary, tertiary, and qauternary) structures of a protein.