Ectodysplasin is released by proteolytic shedding and binds to the EDAR protein.
Authors:Elomaa O, Pulkkinen K, Hannelius U, Mikkola M, Saarialho-Kere U, Kere J,
Journal:Hum Mol Genet
PubMed ID:11309369
'Anhidrotic ectodermal dysplasia (EDA) is an X-linked disorder characterized by abnormal development of ectoderm and its appendices. The EDA gene encodes different isoforms of ectodysplasin, a transmembrane protein. The two longest isoforms, ectodysplasin-A1 and -A2, which differ by an insertion of two amino acids, are trimeric type II membrane proteins ... More
A novel site on the Galpha -protein that recognizes heptahelical receptors.
'Specific domains of the G-protein alpha subunit have been shown to control coupling to heptahelical receptors. The extreme N and C termini and a region between alpha4 and alpha5 helices of the G-protein alpha subunit are known to determine selective interaction with the receptors. The metabotropic glutamate receptor 2 activated ... More
Cell adhesion and migration properties of beta 2-integrin negative polymorphonuclear granulocytes on defined extracellular matrix molecules. Relevance for leukocyte extravasation.
Authors:Sixt M, Hallmann R, Wendler O, Scharffetter-Kochanek K, Sorokin LM,
Journal:J Biol Chem
PubMed ID:11278780
'Regulated adhesion of leukocytes to the extracellular matrix is essential for transmigration of blood vessels and subsequent migration into the stroma of inflamed tissues. Although beta(2)-integrins play an indisputable role in adhesion of polymorphonuclear granulocytes (PMN) to endothelium, we show here that beta(1)- and beta(3)-integrins but not beta(2)-integrin are essential ... More
Delivery of proteins into living cells by reversible membrane permeabilization with streptolysin-O.
Authors:Walev I, Bhakdi SC, Hofmann F, Djonder N, Valeva A, Aktories K, Bhakdi S,
Journal:Proc Natl Acad Sci U S A
PubMed ID:11248053
'The pore-forming toxin streptolysin O (SLO) can be used to reversibly permeabilize adherent and nonadherent cells, allowing delivery of molecules with up to 100 kDa mass to the cytosol. Using FITC-labeled albumin, 10(5)-10(6) molecules were estimated to be entrapped per cell. Repair of toxin lesions depended on Ca(2+)-calmodulin and on ... More
Phosphorylation regulates intracellular trafficking of beta-secretase.
Authors:Walter J, Fluhrer R, Hartung B, Willem M, Kaether C, Capell A, Lammich S, Multhaup G, Haass C,
Journal:J Biol Chem
PubMed ID:11278841
beta-Secretase (BACE) is a transmembrane aspartyl protease, which generates the N terminus of Alzheimer's disease amyloid beta-peptide. Here, we report that BACE can be phosphorylated within its cytoplasmic domain at serine residue 498 by casein kinase 1. Phosphorylation exclusively occurs after full maturation of BACE by propeptide cleavage and complex ... More