Proteins are tagged for degradation with a small protein called ubiquitin. Macronutrients are fat, protein, and carbohydrates. This gene codes for an alternative penicillin binding protein, PBP2a. Casein is the main protein of milk. Antibodies to measles bind to the hemagglutinin protein. Other diseases involving the mammalian prion protein are known. It contains many other nutrients including protein and lactose. Within individual stacks are assortments of enzymes responsible for selectively modifying protein cargo. Protein and cholesterol content were equal. The same is true of gene/protein symbols. Kwashiorkor is a severe form of malnutrition associated with a deficiency in dietary protein. Sepsis is also able to prevent leucine from stimulating muscle protein synthesis. A gene for a fifth FGFR protein, FGFR5, has also been identified. Clarithromycin prevents bacteria from multiplying by acting as a protein synthesis inhibitor. The RNA genome forms a nucleocapsid along with copies of the 12-kDa capsid protein.