>cd05070 PTKc_Fyn_Yrk Catalytic Domain of the Protein Tyrosine Kinases, Fyn and Yrk. Protein Tyrosine Kinase (PTK) family; Fyn and Yrk kinases; catalytic (c) domain. 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. Fyn and Yrk are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) tyr kinases. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). Src proteins are involved in signaling pathways that r

Probab=98.63 E-value=6.3e-08 Score=80.59 Aligned_cols=143 Identities=17% Similarity=0.210 Sum_probs=91.8 Q ss_pred HHHH--HHHHHHHHHHHHHHHEECCCCCCEEEEEEECCHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHH Q ss_conf 9867--66677888865555021288872368764031046887777889998753211468543346917999999988 Q gi|254780623|r 121 CEFD--DPIAAASIAQVHPAVVHDINGYRKVAVKIIRPGVRKRFFRDIQVMYLIARIQEKLLPSMRRLCFSAVVRALEQV 198 (517) Q Consensus 121 ~~fd--ePlasASiaQVh~A~l~d~~~g~~VaVKV~rP~i~~~i~~Dl~~l~~~~~~~~~~~~~~~~~~~~~~~~e~~~~ 198 (517) T Consensus 6 ~~~~~~~~IG~G~fG~Vy~g~~~~---~~~VAiK~l~~~~~~---------------------------~----~----- 46 (260) T cd05070 6 ESLQLIKKLGNGQFGEVWMGTWNG---NTKVAVKTLKPGTMS---------------------------P----E----- 46 (260) T ss_pred HHEEEEEEEECCCCCEEEEEEECC---CCEEEEEEECCCCCC---------------------------H----H----- T ss_conf 998974798218885899999999---999999998836799---------------------------7----9----- Q ss_pred HHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHCCCHHCC-CCEEEEECCCCCCCCHHHHH-HHHCCCHH---HHHHHHHHH Q ss_conf 78886559999889872024467766430000102217-83353002478632426773-32002256---899999999 Q gi|254780623|r 199 TKMEMDLRLEAAAFSEMAENTVKDQGFRVPKIDWNRTE-RDVITMEWIDGVKISDTEKL-RACGHDLE---RLSVTLVQS 273 (517) Q Consensus 199 l~~ElD~~~Ea~n~~~~~~~~~~~~~v~vP~vy~~~st-~~VLvmE~i~G~~i~d~~~l-~~~~~d~~---~la~~l~~~ 273 (517) T Consensus 47 -----~f~~E~~il~~l~H~n----Iv---~~~g~~~~~~~~lv~Ey~~~G~L~~~l~~~~~~~~~~~~~~~i~~qia~g 114 (260) T cd05070 47 -----SFLEEAQIMKKLRHDK----LV---QLYAVVSEEPIYIVTEYMSKGSLLDFLKDGEGRALKLPNLVDMAAQVAAG 114 (260) T ss_pred -----HHHHHHHHHHHCCCCC----CC---EEEEEEECCCEEEEEECCCCCCHHHHHHHCCCCCCCHHHHHHHHHHHHHH T ss_conf -----9999999998689989----89---49999936975999981799989999862888879999999999999999 Q ss_pred HHHHHHHCCEECCCCCCCEEEEECCCCEEEEECCHHEECCHH Q ss_conf 999897448661787862289802895357434031216989 Q gi|254780623|r 274 FLLHTLRDGFFHADLHPGNLFVDSKGYIVAVDMGITGRLSKR 315 (517) Q Consensus 274 ~~~qi~~~GfFHaDPHpGNi~v~~dg~i~~lDfG~vg~l~~~ 315 (517) T Consensus 115 -L~yLH~~~iiHrDlKp~NiLl~~~~~~KL~DFGla~~~~~~ 155 (260) T cd05070 115 -MAYIERMNYIHRDLRSANILVGDGLVCKIADFGLARLIEDN 155 (260) T ss_pred -HHHHHHCCCCCCCCCCCEEEECCCCCEEEEECCCCEECCCC T ss_conf -99985589234504617288878997898565867186789

HHsearch alignment for GI: 254780623 and conserved domain: cd05070