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.
Produced during protein synthesis, the series of steps taken by cells to create a functional protein, proteins are useful in muscle building, tissue repair, and acting as enzymes. Protein synthesis wouldn't be possible without the help of messenger RNA, or mRNA for short.