>cd05072 PTKc_Lyn Catalytic Domain of the Protein Tyrosine Kinase, Lyn. Protein Tyrosine Kinase (PTK) family; Lyn kinase; 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. Lyn is a member 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 regulate cytokine and growth fa

Probab=98.76 E-value=3.6e-08 Score=82.46 Aligned_cols=143 Identities=19% Similarity=0.258 Sum_probs=92.1 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~~~~~~---~~~VAvK~~~~~~~---------------------------~----~~----- 46 (261) T cd05072 6 ESIKMVKKLGAGQFGEVWMGFYNN---STKVAVKTLKPGTM---------------------------S----VQ----- 46 (261) T ss_pred HHEEEEEEEECCCCCEEEEEEECC---CCEEEEEEECCCCC---------------------------C----HH----- T ss_conf 997972398328886999999999---99999999866755---------------------------7----99----- Q ss_pred HHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHCCCHHC--CCCEEEEECCCCCCCCHHHHHHH-HCCCHH---HHHHHHHH Q ss_conf 7888655999988987202446776643000010221--78335300247863242677332-002256---89999999 Q gi|254780623|r 199 TKMEMDLRLEAAAFSEMAENTVKDQGFRVPKIDWNRT--ERDVITMEWIDGVKISDTEKLRA-CGHDLE---RLSVTLVQ 272 (517) Q Consensus 199 l~~ElD~~~Ea~n~~~~~~~~~~~~~v~vP~vy~~~s--t~~VLvmE~i~G~~i~d~~~l~~-~~~d~~---~la~~l~~ 272 (517) T Consensus 47 -----~f~~E~~~l~~l~H-----pn--IV~~~g~~~~~~~~~lv~E~~~~GsL~~~l~~~~~~~~~~~~~~~~~~qia~ 114 (261) T cd05072 47 -----AFLEEANLMKTLQH-----DK--LVRLYAVVTKEEPIYIITEYMAKGSLLDFLKSDEGSKVQLPKLIDFSAQIAE 114 (261) T ss_pred -----HHHHHHHHHHHCCC-----CC--CCEEEEEEEECCEEEEEEEECCCCCHHHHHHHCCCCCCCHHHHHHHHHHHHH T ss_conf -----99999999986899-----88--8729999988998899998079993899985366888799999999999999 Q ss_pred HHHHHHHHCCEECCCCCCCEEEEECCCCEEEEECCHHEECCHH Q ss_conf 9999897448661787862289802895357434031216989 Q gi|254780623|r 273 SFLLHTLRDGFFHADLHPGNLFVDSKGYIVAVDMGITGRLSKR 315 (517) Q Consensus 273 ~~~~qi~~~GfFHaDPHpGNi~v~~dg~i~~lDfG~vg~l~~~ 315 (517) T Consensus 115 g-L~yLH~~~iiHrDlK~~NiLl~~~~~~Kl~DFGls~~~~~~ 156 (261) T cd05072 115 G-MAYIEKKNYIHRDLRAANVLVSESLMCKIADFGLARVIEDN 156 (261) T ss_pred H-HHHHHHCCEECCCCCCCEEEECCCCCEEEEECCCCEECCCC T ss_conf 9-99998689266614637489889997999855875686799

HHsearch alignment for GI: 254780623 and conserved domain: cd05072