MAPKKK, also known as mitogen activated protein kinase kinase kinase, is an intracellular kinase important in cell proliferation, cell differentiation, and apoptosis, among other cellular functions. By name or number, identify all of the following four amino acids which are commonly phosphorylated in the cytosol: 1) Glutamine (GLOO-tuh-meen) 2) Threonine (THREE-oh-neen) 3) Phenylalanine (fee-null-A-luh-neen) 4) Serine (SARE-een)