>cd05631 STKc_GRK4 STKc_GRK4: Serine/Threonine Kinases (STKs), G protein-coupled Receptor Kinase (GRK) subfamily, GRK4 isoform, catalytic (c) domain. STKs catalyze the transfer of the gamma-phosphoryl group from ATP to serine/threonine residues on protein substrates. The GRK 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. GRKs phosphorylate and regulate G protein-coupled receptors (GPCRs), the largest superfamily of cell surface receptors which regulate some part of nearly all physiological functions. Phosphorylated GPCRs bind to arrestins, which prevents further G protein signaling despite the presence of activating ligand. There are seven types of GRKs, named GRK1 to GRK7. GRK4 has a limited tissue distribution. It is mainly found in the testis, but is also present in the cerebellum and kidney. It is expressed as

Probab=97.02 E-value=0.019 Score=35.52 Aligned_cols=137 Identities=15% Similarity=0.146 Sum_probs=70.9 Q ss_pred EEECCCCCEEEEEEEEEC-CC-CEEEEEECCC-CCHH----HHHHHHHHHHHHHHCCCCCCCCCCCCHHHHHHHHCCCCE Q ss_conf 100466812001799943-99-5899982166-9988----999999999998532677555100102677875224515 Q gi|254780795|r 27 VQPIIHGVENSNFVIQTS-KG-TFILTIYEKR-MNEK----DLPVFIELLHYISRNKLPCPIPIPRNDGKLYGFLCKKPA 99 (316) Q Consensus 27 ~~~i~~G~~Ntny~v~t~-~~-~yiLri~e~~-~~~~----~l~~~~~ll~~L~~~gipvP~pi~~~~G~~~~~~~~k~~ 99 (316) T Consensus 5 ~k~lG~G~fg~V~~~~~~~tg~~~AiK~i~~~~~~~~~~~~~~~~E~~il~~~~h~~i-----v~l~---~~~~~~~~~~ 76 (285) T cd05631 5 YRVLGKGGFGEVCACQVRATGKMYACKKLEKKRIKKRKGEAMALNEKRILEKVNSRFV-----VSLA---YAYETKDALC 76 (285) T ss_pred EEEECCCCCEEEEEEEECCCCCEEEEEEECHHHHCCHHHHHHHHHHHHHHHHCCCCCC-----CEEE---EEEEECCEEE T ss_conf 5895038182999999989997999999837881025789999999999987699888-----8599---9999799999 Q ss_pred EEEECCCCCCCCCCCHHHHHHHHHHHHHHHHHC-CCCCCCCCCCCCHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHH Q ss_conf 578647887076899899999999864367530-6875433231124564576675200155227889999999888765 Q gi|254780795|r 100 NIFSFIKGSPLNHISDIHCEEIGSMLASMHQKT-KNFHLYRKNTLSPLNLKFLWAKCFDKVDEDLKKEIDHEFCFLKESW 178 (316) Q Consensus 100 ~L~~~i~G~~~~~~~~~~~~~lG~~La~lH~~~-~~f~~~r~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~l~~~~~~~ 178 (316) T Consensus 77 lv~e~~~gg~L~----~~i----------~~~~~~~~~--------e~~~~------------~~~~qi~~al~ylH~-- 120 (285) T cd05631 77 LVLTIMNGGDLK----FHI----------YNMGNPGFD--------EQRAI------------FYAAELCCGLEDLQR-- 120 (285) T ss_pred EEEEECCCCCHH----HHH----------HHCCCCCCC--------HHHHH------------HHHHHHHHHHHHHHH-- T ss_conf 999965798589----999----------863899999--------99999------------999999999999997-- Q ss_pred HHCCCCCEEECCCCCCCEEECC-CCCEEEECCCCCC Q ss_conf 2107774440223464225627-9604873162135 Q gi|254780795|r 179 PKNLPTGIIHADLFPDNVLFYN-NKIMGLIDFYFSC 213 (316) Q Consensus 179 ~~~Lp~g~IHgDl~~~NiL~~~-~~i~giIDF~~~~ 213 (316) T Consensus 121 -----~~IiHRDlKPeNILl~~~~~i-Kl~DFGla~ 150 (285) T cd05631 121 -----ERIVYRDLKPENILLDDRGHI-RISDLGLAV 150 (285) T ss_pred -----CCCCCCCCCCCCCCCCCCCCE-EEEECCCEE T ss_conf -----797577668656565789968-997658458

HHsearch alignment for GI: 254780795 and conserved domain: cd05631