The invention provides isolated nucleic acids molecules, designated 3714, 16742, 23546, or 13887 nucleic acid molecules, which encode novel protein kinases. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing 3714, 16742, 23546, or 13887 nucleic acid molecules, host cells into which the expression vectors have been introduced, and nonhuman transgenic animals in which a 3714, 16742, 23546, or 13887 gene has been introduced or disrupted. The invention sill further provides isolated 3714, 16742, 23546, or 13887 proteins, fusion proteins, antigenic peptides and anti-3714, -16742, -23546, or -13887 antibodies. Diagnostic, screening, and therapeutic methods utilizing compositions of the invention are also provided.