Results 51 to 60 of about 173,706 (280)

Heme Interferes With Complement Factor I-Dependent Regulation by Enhancing Alternative Pathway Activation

Frontiers in Immunology, 2022
Hemolysis, as a result of disease or exposure to biomaterials, is characterized by excess amounts of cell-free heme intravascularly and consumption of the protective heme-scavenger proteins in plasma.
Alexandra Gerogianni, Alexandra Gerogianni, Jordan D. Dimitrov, Alessandra Zarantonello, Victoria Poillerat, Satheesh Chonat, Satheesh Chonat, Kerstin Sandholm, Karin E. McAdam, Kristina N. Ekdahl, Kristina N. Ekdahl, Kristina N. Ekdahl, Tom E. Mollnes, Tom E. Mollnes, Tom E. Mollnes, Camilla Mohlin, Camilla Mohlin, Lubka T. Roumenina, Per H. Nilsson, Per H. Nilsson, Per H. Nilsson   +20 more
doaj   +1 more source

Is It Possible to Intervene in the Capacity of Trypanosoma cruzi to Elicit and Evade the Complement System?

Frontiers in Immunology, 2021
Chagas’ disease is a zoonotic parasitic ailment now affecting more than 6 million people, mainly in Latin America. Its agent, the protozoan Trypanosoma cruzi, is primarily transmitted by endemic hematophagous triatomine insects.
Galia Ramírez-Toloza, Lorena Aguilar-Guzmán, Carolina Valck, Smrithi S. Menon, Viviana P. Ferreira, Arturo Ferreira   +5 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

The Complement System: A Prey of Trypanosoma cruzi

Frontiers in Microbiology, 2017
Trypanosoma cruzi is a protozoan parasite known to cause Chagas disease (CD), a neglected sickness that affects around 6–8 million people worldwide. Originally, CD was mainly found in Latin America but more recently, it has been spread to countries in ...
Kárita C. F. Lidani, Iara J. de Messias-Reason, Lorena Bavia, Altair R. Ambrosio   +3 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Backbone dynamics of complement control protein (CCP) modules reveals mobility in binding surfaces

, 2004
The regulators of complement activation (RCA) are critical to health and disease because their role is to ensure that a complement-mediated immune response to infection is proportionate and targeted.
Krystyna Bromek, Uhrin, D, O'Leary, JM, Xuefeng Wang, Stanislava Uhrinova, Joanne M. O'Leary, Black, GM, Wang, XF, Malgorzata Krych, John P. Atkinson, Uhrinova, S, Dusan Uhrin, Atkinson, JP, Gordon M. Black, Krych, M, Schmitz, C, Paul N. Barlow, Bromek, K, Barlow, PN, Christian Schmitz   +19 more
core   +1 more source

CLONING OF THE 1.4-kb mRNA SPECIES OF HUMAN COMPLEMENT FACTOR H REVEALS A NOVEL MEMBER OF THE SHORT CONSENSUS REPEAT FAMILY RELATED TO THE CARBOXY TERMINAL OF THE CLASSICAL 150-kDa MOLECULE [PDF]

, 1991
Three factor H mRNA species of 4.3 kb, 1.8 kb, and 1.4 kb are constitutively expressed in human liver. Having previously characterized full-length cDNA clones derived from the 4.3-kb and 1.8-kb factor mRNA, we report here the isolation and eucaryotic ...
Estaller, C., Schwaeble, W., Koistinen, V., Dierich, Manfred P., Weiss, Elisabeth H.   +4 more
core   +1 more source

Identity of the Segment of Human Complement C8 Recognized by Complement Regulatory Protein CD59 [PDF]

Journal of Biological Chemistry, 1995
CD59 antigen is a membrane glycoprotein that inhibits the activity of the C5b-9 membrane attack complex (MAC), thereby protecting human cells from lysis by human complement. The inhibitory function of CD59 derives from its capacity to interact with both the C8 and C9 components of MAC, preventing assembly of membrane-inserted C9 polymer. MAC-inhibitory
D H, Lockert, K M, Kaufman, C P, Chang, T, Hüsler, J M, Sodetz, P J, Sims   +5 more
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Borrelia valaisiana resist complement-mediated killing independently of the recruitment of immune regulators and inactivation of complement components

, 2013
Spirochetes belonging to the Borrelia (B.) burgdorferi sensu lato complex differ in their resistance to complement-mediated killing, particularly in regard to human serum.
Christine Skerka, Skerka, Christine, Schwab, Jasmin, Peter Kraiczy (36173), Jasmin Schwab (105418), Christine Skerka (105424), Zipfel, Peter F., Richter, Dania, Peter Kraiczy, Peter F Zipfel, Dania Richter (105422), Franz-Rainer Matuschka, Peter F. Zipfel, Kraiczy, Peter, Reinhard Wallich (57833), Matuschka, Franz-Rainer, Dania Richter, Claudia Hammerschmidt, Wallich, Reinhard, Hammerschmidt, Claudia, Reinhard Wallich, Jasmin Schwab, Claudia Hammerschmidt (105420), Peter F. Zipfel (105431), Franz-Rainer Matuschka (105426)   +24 more
core   +1 more source