sequence of LZK M3K13_HUMAN EC 2.7.11.25 IMR:0703894 LZK Leucine zipper-bearing kinase MAP3K13 MEKK13 MGC133196 MLK Mitogen-activated protein kinase kinase kinase 13 Mixed lineage kinase UniProt:O43283 mitogen-activated protein kinase kinase kinase 13 molecule_role