>cd05034 PTKc_Src_like Catalytic Domain of Src kinase-like Protein Tyrosine Kinases. Protein Tyrosine Kinase (PTK) family; Src kinase subfamily; catalytic (c) domain. Src subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, and Yes. 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. Src (or c-Src) proteins are cytoplasmic (or non-receptor) tyr kinases which are anchored to the plasma membrane. They 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-t

Probab=98.70 E-value=3.2e-08 Score=82.87 Aligned_cols=142 Identities=17% Similarity=0.201 Sum_probs=91.3 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 ~~~~l~~~iG~G~fG~Vy~~~~~~---~~~VAvK~l~~~~~---------------------------~~----~----- 46 (261) T cd05034 6 ESLKLERKLGAGQFGEVWMGTWNG---TTKVAVKTLKPGTM---------------------------SP----E----- 46 (261) T ss_pred HHEEEEEEEECCCCCEEEEEEECC---CCEEEEEEECCCCC---------------------------CH----H----- T ss_conf 995982598428883899999999---99999999874789---------------------------99----9----- Q ss_pred HHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHCCCHH--CCCCEEEEECCCCCCCCHHHHHHH-HCCCHH---HHHHHHHH Q ss_conf 788865599998898720244677664300001022--178335300247863242677332-002256---89999999 Q gi|254780623|r 199 TKMEMDLRLEAAAFSEMAENTVKDQGFRVPKIDWNR--TERDVITMEWIDGVKISDTEKLRA-CGHDLE---RLSVTLVQ 272 (517) Q Consensus 199 l~~ElD~~~Ea~n~~~~~~~~~~~~~v~vP~vy~~~--st~~VLvmE~i~G~~i~d~~~l~~-~~~d~~---~la~~l~~ 272 (517) T Consensus 47 -----~f~~E~~~l~~l~H-----pnI--V~~~g~~~~~~~~~iv~Ey~~~G~L~~~l~~~~~~~l~~~~~~~i~~qia~ 114 (261) T cd05034 47 -----AFLEEAQIMKKLRH-----DKL--VQLYAVCSEEEPIYIVTEYMSKGSLLDFLKSGEGKKLRLPQLVDMAAQIAE 114 (261) T ss_pred -----HHHHHHHHHHHCCC-----CCE--EEEEEEEEECCEEEEEEECCCCCCHHHHHHCCCCCCCCHHHHHHHHHHHHH T ss_conf -----99999999986899-----798--559999988998999997589988899972188888999999999999999 Q ss_pred HHHHHHHHCCEECCCCCCCEEEEECCCCEEEEECCHHEECCH Q ss_conf 999989744866178786228980289535743403121698 Q gi|254780623|r 273 SFLLHTLRDGFFHADLHPGNLFVDSKGYIVAVDMGITGRLSK 314 (517) Q Consensus 273 ~~~~qi~~~GfFHaDPHpGNi~v~~dg~i~~lDfG~vg~l~~ 314 (517) T Consensus 115 g-l~yLH~~~iiHrDlKp~NILl~~~~~~Kl~DFGls~~~~~ 155 (261) T cd05034 115 G-MAYLESRNYIHRDLAARNVLVGENLVCKVADFGLARLIED 155 (261) T ss_pred H-HHHHHHCCCCCCCCCCCEEEECCCCCEEEEECCCCEECCC T ss_conf 9-9999869957543272758988999799972787557578

HHsearch alignment for GI: 254780623 and conserved domain: cd05034