Results 51 to 60 of about 367,967 (298)

The Murine Factor H-Related Protein FHR-B Promotes Complement Activation

Frontiers in Immunology, 2017
Factor H-related (FHR) proteins consist of varying number of complement control protein domains that display various degrees of sequence identity to respective domains of the alternative pathway complement inhibitor factor H (FH). While such FHR proteins
Marcell Cserhalmi, Ádám I. Csincsi, Zoltán Mezei, Anne Kopp, Mario Hebecker, Barbara Uzonyi, Mihály Józsi   +6 more
doaj   +1 more source

Vasoregulatory Autoantibodies and Clinical Outcome After Ischemic Stroke—PROSCIS‐B

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Vasoregulatory autoantibodies including autoantibodies targeting G‐protein–coupled receptors might play a functional role in vascular diseases.
Thomas G. Liman, Bob Siegerink, Sophie Piper, Rusan Catar, Guido Moll, Gabriela Riemekasten, Harald Heidecke, Peter U. Heuschmann, Mitchell S. V. Elkind, Duska Dragun, Matthias Endres   +10 more
doaj   +1 more source

A Conserved Element in the Serine Protease Domain of Complement Factor B [PDF]

Journal of Biological Chemistry, 1998
Factor B and C2 are serine proteases that carry the catalytic sites of the complement C3 and C5 convertases. Their protease domains are activated by conformational changes that occur during convertase assembly and are deactivated upon convertase dissociation.
Lynne M. Mitchell, Dennis E. Hourcade, Teresa J. Oglesby   +2 more
openaire   +2 more sources

The immunological interface: dendritic cells as key regulators in metabolic dysfunction‐associated steatotic liver disease

FEBS Letters, EarlyView.
Metabolic dysfunction‐associated steatotic liver disease (MASLD) affects nearly one‐third of the global population and poses a significant risk of progression to cirrhosis or liver cancer. Here, we discuss the roles of hepatic dendritic cell subtypes in MASLD, highlighting their distinct contributions to disease initiation and progression, and their ...
Camilla Klaimi, WanTing Kong, Camille Blériot, Joel T. Haas   +3 more
wiley   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

Autoantibodies Against Factor B and Factor H Without Pathogenic Effects in a Patient with Immune Complex-Mediated Membranoproliferative Glomerulonephritis

Biomedicines
Background: Membranoproliferative glomerulonephritis (MPGN) is an umbrella term for chronic disorders affecting the glomeruli. MPGN is often accompanied by the presence of autoantibodies against complement components.
Alexandra T. Matola, Dorottya Csuka, Ágnes Szilágyi, Michael Rudnicki, Zoltán Prohászka, Mihály Józsi, Barbara Uzonyi   +6 more
doaj   +1 more source

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Hide and seek: how Lyme disease spirochetes overcome complement attack

Frontiers in Immunology, 2016
Overcoming the first line of the innate immune system is a general hallmark of pathogenic microbes to avoid recognition and to enter the human host.
Peter Kraiczy
doaj   +1 more source

The thioredoxin‐like and one glutaredoxin domain are required to rescue the iron‐starvation phenotype of HeLa GLRX3 knock out cells

FEBS Letters, EarlyView.
Glutaredoxin (Grx) 3 proteins contain a thioredoxin domain and one to three class II Grx domains. These proteins play a crucial role in iron homeostasis in eukaryotic cells. In human Grx3, at least one of the two Grx domains, together with the thioredoxin domain, is essential for its function in iron metabolism.
Laura Magdalena Jordt, Manuela Gellert, Finja Zelms, Sander Bekeschus, Christopher Horst Lillig   +4 more
wiley   +1 more source

Access to the Complement Factor B Scissile Bond Is Facilitated by Association of Factor B with C3b Protein [PDF]

Journal of Biological Chemistry, 2011
Factor B is a zymogen that carries the catalytic site of the complement alternative pathway C3 convertase. During convertase assembly, factor B associates with C3b and Mg(2+) forming a pro-convertase C3bB(Mg(2+)) that is cleaved at a single factor B site by factor D. In free factor B, a pair of salt bridges binds the Arg(234) side chain to Glu(446) and
Dennis E. Hourcade, Lynne M. Mitchell
openaire   +2 more sources