Sökning: "CAAX proteins"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden CAAX proteins.
1. Statins, Lipids, and Mutations: Consequences for the Heart and Immune System
Sammanfattning : CAAX proteins are a group of proteins that undergo a three-step protein maturation process that renders the proteins carboxyl-terminus hydrophobic and prone to localize to cellular membranes, where they have their primary function. The first step in this process is called prenylation, which is the covalent attachment of a lipid, either a 15-carbon farnesyl or a 20-carbon geranylgeranyl lipid, to the carboxyl-terminal cysteine residue by the enzymes farnesyltransferase (FTase) and geranylgeranyltransferase type I (GGTase-I), respectively. LÄS MER
2. Defining RCE1 and ICMT as Therapeutic Targets in K-RAS-induced Cancer
Sammanfattning : CAAX proteins, such as the RAS and RHO proteins, are recognized by a specific CAAX motif at the carboxyl terminus, which undergoes posttranslational modifications. First, a lipid group is attached to the cysteine (the “C”) of the CAAX motif by farnesyltransferase (FTase) or geranylgeranyltransferase-I (GGTase-I); second, the –AAX are removed by RAS converting enzyme 1 (RCE1); and third, the cysteine is methylated by isoprenylcysteine carboxyl methyltransferase (ICMT). LÄS MER
3. Defining the importance of protein geranylgeranylation in innate immunity
Sammanfattning : RHO family proteins and other intracellular proteins are prenylated with a 20-carbon lipid—a product of the cholesterol synthesis pathway—by protein geranylgeranyltransferase type I (GGTase-I). Prenylation is widely believed to target proteins to membranes where they encounter effector molecules that stimulate GTP-binding and activation. LÄS MER
4. The Importance of Isoprenylation and Nf1 Deficiency in K-RAS-induced Cancer
Sammanfattning : The RAS and RHO family proteins contribute to tumorigenesis and metastasis and belong to a family of so called CAAX proteins. The membrane targeting and proper function of CAAX proteins are dependent on posttranslational isoprenylation by farnesyltransferase (FTase) or geranylgeranyltransferase type I (GGTase-I). LÄS MER
5. Defining the Role of GGTase-I in the Development of Rheumatoid Arthritis and Atherosclerosis
Sammanfattning : RHO family proteins control cell movement and intracellular signaling by cycling between active GTP-bound and inactive GDP-bound states. Aberrant signaling of RHO GTPases has been implicated in many diseases including cancer and inflammation. LÄS MER