>cd05038 PTKc_Jak_rpt2 Catalytic (Repeat 2) Domain of the Protein Tyrosine Kinases, Janus kinases. Protein Tyrosine Kinase (PTK) family; Janus kinase (Jak) subfamily; catalytic (c) domain (repeat 2). The Jak subfamily is composed of Jak1, Jak2, Jak3, TYK2, and similar proteins. The PTKc family is part of a larger superfamily that includes the catalytic domains of other kinases such as protein serine/threonine kinases, RIO kinases, and phosphoinositide 3-kinase (PI3K). PTKs catalyze the transfer of the gamma-phosphoryl group from ATP to tyrosine (tyr) residues in protein substrates. Jak subfamily proteins are cytoplasmic (or nonreceptor) tyr kinases containing an N-terminal FERM domain, followed by a Src homology 2 (SH2) domain, a pseudokinase domain, and a C-terminal tyr kinase catalytic domain. Most Jaks are expressed in a wide variety of tissues, except for Jak3, which is expressed only in hematopoietic cells. Jaks are crucial for cytokine receptor signaling. They are activated by aut

Probab=99.08 E-value=5.8e-09 Score=88.62 Aligned_cols=142 Identities=18% Similarity=0.214 Sum_probs=91.3 Q ss_pred HHHHHHHHHHHHHHHEE--CCCCCCEEEEEEECCHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHHHH Q ss_conf 66677888865555021--2888723687640310468877778899987532114685433469179999999887888 Q gi|254780623|r 125 DPIAAASIAQVHPAVVH--DINGYRKVAVKIIRPGVRKRFFRDIQVMYLIARIQEKLLPSMRRLCFSAVVRALEQVTKME 202 (517) Q Consensus 125 ePlasASiaQVh~A~l~--d~~~g~~VaVKV~rP~i~~~i~~Dl~~l~~~~~~~~~~~~~~~~~~~~~~~~e~~~~l~~E 202 (517) T Consensus 10 ~~IG~G~fG~Vy~~~~~~~~~~~~~~VAvK~i~~~~~~-----------------------------~~~---------- 50 (279) T cd05038 10 KQLGEGHFGTVYLGTYDPPDDNTGEIVAVKKLNTSGVE-----------------------------AHR---------- 50 (279) T ss_pred EEEECCCCEEEEEEEEECCCCCCCEEEEEEEECCCCCH-----------------------------HHH---------- T ss_conf 89703748099999995785877839999998845597-----------------------------899---------- Q ss_pred HHHHHHHHHHHHHHCCCCCCCCCCCHHCCCHHCC-----CCEEEEECCCCCCCCHHHHHHHHCCCHH---HHHHHHHHHH Q ss_conf 6559999889872024467766430000102217-----8335300247863242677332002256---8999999999 Q gi|254780623|r 203 MDLRLEAAAFSEMAENTVKDQGFRVPKIDWNRTE-----RDVITMEWIDGVKISDTEKLRACGHDLE---RLSVTLVQSF 274 (517) Q Consensus 203 lD~~~Ea~n~~~~~~~~~~~~~v~vP~vy~~~st-----~~VLvmE~i~G~~i~d~~~l~~~~~d~~---~la~~l~~~~ 274 (517) T Consensus 51 ~~f~~Ei~~l~~l~H-----pn--Iv~l~g-~~~~~~~~~~~iV~Ey~~~GsL~~~l~~~~~~~~~~~~~~i~~qia~g- 121 (279) T cd05038 51 QDFEREIEIMRTLDH-----EN--IVKYKG-VSEEPGGRSLSLIMEYLPSGSLRDYLRRHRDQLNLKRLLLFALQIAKG- 121 (279) T ss_pred HHHHHHHHHHHHCCC-----CC--CCCEEE-EEECCCCCEEEEEEEECCCCCHHHHHHHCCCCCCHHHHHHHHHHHHHH- T ss_conf 999999999986799-----89--761889-996289987999999179985899986158999999999999999999- Q ss_pred HHHHHHCCEECCCCCCCEEEEECCCCEEEEECCHHEECCH Q ss_conf 9989744866178786228980289535743403121698 Q gi|254780623|r 275 LLHTLRDGFFHADLHPGNLFVDSKGYIVAVDMGITGRLSK 314 (517) Q Consensus 275 ~~qi~~~GfFHaDPHpGNi~v~~dg~i~~lDfG~vg~l~~ 314 (517) T Consensus 122 L~yLH~~~iiHrDlK~~NILl~~~~~~Ki~DFGls~~~~~ 161 (279) T cd05038 122 MDYLGSKRLIHRDLAARNILVDSEDLVKISDFGLAKVLPE 161 (279) T ss_pred HHHHHHCCEEECCCCCCCEEECCCCEEEEECCCCCCCCCC T ss_conf 9988758976552562107788999099934745326578

HHsearch alignment for GI: 254780623 and conserved domain: cd05038