Home News About DMDM Database Statistics Research Publications Contact  

 
  Domain Name: PI3Kc_IB_gamma
Phosphoinositide 3-kinase (PI3K), class IB, gamma isoform, catalytic domain; The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases. PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. PI3Ks can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class I PI3Ks are the only enzymes capable of converting PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. Class I enzymes are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. They are further classified into class IA (alpha, beta and delta) and IB (gamma). PI3Kgamma associates with one of two regulatory subunits, p101 and p84. It is activated by G-protein-coupled receptors (GPCRs) by direct binding to their betagamma subunits. It contains an N-terminal Ras binding domain, a lipid binding C2 domain, a PI3K homology domain of unknown function, and a C-terminal ATP-binding cataytic domain. PI3Kgamma signaling controls diverse immune and vascular functions including cell recruitment, mast cell activation, platelet aggregation, and smooth muscle contractility.
No pairwise interactions are available for this conserved domain.

Total Mutations Found: 6
Total Disease Mutations Found: 4
This domain occurred 11 times on human genes (25 proteins).



  BREAST CANCER, SOMATIC
  COLORECTAL CANCER, SOMATIC, INCLUDED;;
  CONGENITAL LIPOMATOUS OVERGROWTH, VASCULAR MALFORMATIONS, AND EPIDERMAL
  GASTRIC
  MEGALENCEPHALY-CAPILLARY MALFORMATION-POLYMICROGYRIA SYNDROME, SOMATIC
  NEVI, SOMATIC, INCLUDED
  OVARIAN CANCER, EPITHELIAL, SOMATIC, INCLUDED;;


Tips:
 If you've navigated here from a protein, hovering over a position on the weblogo will display the corresponding protein position for that domain position.

 The histograms below the weblogo indicate mutations found on the domain. Red is for disease (OMIM) and blue is for SNPs.

 Functional Features are displayed as orange boxes under the histograms. You can choose which features are displayed in the box below.



Range on the Protein:  

   Protein ID            Protein Position

Domain Position:  


Feature Name:Total Found:
ATP binding site
catalytic loop
Ras binding site
activation loop (A-loop)

















Weblogos are Copyright (c) 2002 Regents of the University of California




Please Cite: Peterson, T.A., Adadey, A., Santana-Cruz ,I., Sun, Y., Winder A, Kann, M.G., (2010) DMDM: Domain Mapping of Disease Mutations. Bioinformatics 26 (19), 2458-2459.

   |   1000 Hilltop Circle, Baltimore, MD 21250   |   Department of Biological Sciences   |   Phone: 410-455-2258