>cd06651 STKc_MEKK3 Serine/threonine kinases (STKs), MAP/ERK kinase kinase 3 (MEKK3) subfamily, catalytic (c) domain. STKs catalyze the transfer of the gamma-phosphoryl group from ATP to serine/threonine residues on protein substrates. The MEKK3 subfamily is part of a larger superfamily that includes the catalytic domains of other protein STKs, protein tyrosine kinases, RIO kinases, aminoglycoside phosphotransferase, choline kinase, and phosphoinositide 3-kinase. MEKK3 is a mitogen-activated protein kinase (MAPK) kinase kinase (MAPKKK or MKKK or MAP3K), that phosphorylates and activates the MAPK kinase MEK5 (or MKK5), which in turn phosphorylates and activates extracellular signal-regulated kinase 5 (ERK5). The ERK5 cascade plays roles in promoting cell proliferation, differentiation, neuronal survival, and neuroprotection. MEKK3 plays an essential role in embryonic angiogenesis and early heart development. In addition, MEKK3 is involved in interleukin-1 receptor and Toll-like receptor

Probab=98.67 E-value=4.2e-08 Score=81.97 Aligned_cols=141 Identities=21% Similarity=0.321 Sum_probs=86.6 Q ss_pred HHHHHHHHHHHHHHHEECCCCCCEEEEEEECCHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHHHHHH Q ss_conf 66677888865555021288872368764031046887777889998753211468543346917999999988788865 Q gi|254780623|r 125 DPIAAASIAQVHPAVVHDINGYRKVAVKIIRPGVRKRFFRDIQVMYLIARIQEKLLPSMRRLCFSAVVRALEQVTKMEMD 204 (517) Q Consensus 125 ePlasASiaQVh~A~l~d~~~g~~VaVKV~rP~i~~~i~~Dl~~l~~~~~~~~~~~~~~~~~~~~~~~~e~~~~l~~ElD 204 (517) T Consensus 8 ~~lG~G~fg~Vy~~~~~~--tg~~~AvK~i~~~-----------------------~~~-----~~~~~~~-------~~ 50 (266) T cd06651 8 KLLGQGAFGRVYLCYDVD--TGRELAAKQVQFD-----------------------PES-----PETSKEV-------SA 50 (266) T ss_pred CEEECCCCEEEEEEEECC--CCCEEEEEEEECC-----------------------CCC-----HHHHHHH-------HH T ss_conf 385127581999999889--9979999999536-----------------------354-----3669999-------99 Q ss_pred HHHHHHHHHHHHCCCCCCCC-CCCHHCCCHHCCC-CEEEEECCCCCCCCHHHHHHHHCCCHHHHHHHHHHHHHHHHH--- Q ss_conf 59999889872024467766-4300001022178-335300247863242677332002256899999999999897--- Q gi|254780623|r 205 LRLEAAAFSEMAENTVKDQG-FRVPKIDWNRTER-DVITMEWIDGVKISDTEKLRACGHDLERLSVTLVQSFLLHTL--- 279 (517) Q Consensus 205 ~~~Ea~n~~~~~~~~~~~~~-v~vP~vy~~~st~-~VLvmE~i~G~~i~d~~~l~~~~~d~~~la~~l~~~~~~qi~--- 279 (517) T Consensus 51 ~~~Ei~~l~~l~H-----pnIv~~~~~~~~~~~~~l~ivmEy~~gg~L~~~--l~~~~----~l~e~~~~~~~~qil~aL 119 (266) T cd06651 51 LECEIQLLKNLQH-----ERIVQYYGCLRDRAEKTLTIFMEYMPGGSVKDQ--LKAYG----ALTESVTRKYTRQILEGM 119 (266) T ss_pred HHHHHHHHHHCCC-----CCEEEEEEEEEECCCCEEEEEEECCCCCCHHHH--HHHCC----CCCHHHHHHHHHHHHHHH T ss_conf 9999999985899-----997138999996899789999971195988999--98749----999999999999999999 Q ss_pred ----HCCEECCCCCCCEEEEECCCCEEEEECCHHEECC Q ss_conf ----4486617878622898028953574340312169 Q gi|254780623|r 280 ----RDGFFHADLHPGNLFVDSKGYIVAVDMGITGRLS 313 (517) Q Consensus 280 ----~~GfFHaDPHpGNi~v~~dg~i~~lDfG~vg~l~ 313 (517) T Consensus 120 ~ylH~~~IiHRDlKp~NIL~~~~~~vKl~DFG~a~~~~ 157 (266) T cd06651 120 SYLHSNMIVHRDIKGANILRDSAGNVKLGDFGASKRLQ 157 (266) T ss_pred HHHHHCCEEECCCCHHHEEECCCCCEEECCCCCCCCCC T ss_conf 99986996524387899678789998984157311025

HHsearch alignment for GI: 254780623 and conserved domain: cd06651