Results 31 to 40 of about 27,085 (217)

Structure of C3b reveals conformational changes that underlie complement activity [PDF]

Nature, 2006
Resistance to infection and clearance of cell debris in mammals depend on the activation of the complement system, which is an important component of innate and adaptive immunity. Central to the complement system is the activated form of C3, called C3b, which attaches covalently to target surfaces to amplify complement response, label cells for ...
Janssen, B.J.C., Christodoulidou, A., McCarthy, A.A., Lambris, J.D., Gros, P.   +4 more
openaire   +4 more sources

Buoyancy regulation and aggregate formation in Amoebobacter purpureus from Mahoney lake [PDF]

, 1992
The meromictic Mahoney Lake (British Columbia, Canada) contains an extremely dense layer of purple sulfur bacteria (Amoebobacter purpureus). The buoyant density of Amoebobacter cells grown in pure culture at saturating light intensity was significantly ...
Bar-Ness, Bar-Or, Booker, Bryant, Bührer, Caldwell, Cline, Courtney, Dahlbäck, Dietrich, Doyle, Eichler, Fattom, Hart, Hartree, Herbert, Huheey, Hutchinson, Jenkinson, Jörg Overmann, Kjelleberg, Lehninger, Marshall, Mas, Nikovskaya, Norbert Pfennig, Northcote, Northcote, Northcote, Ofek, Oliver, Oliver, Overmann, Overmann, Overmann, Parker, Pfennig, Reed, Rosenberg, Siefert, Takakuwa, Tilzer, Walsby, Walsby   +43 more
core   +1 more source

A C3(H20) recycling pathway is a component of the intracellular complement system [PDF]

, 2017
An intracellular complement system (ICS) has recently been described in immune and nonimmune human cells. This system can be activated in a convertase-independent manner from intracellular stores of the complement component C3. The source of these stores
Botto, Bu, Hrishikesh S. Kulkarni, John P. Atkinson, Liszewski, M. Kathryn Liszewski, Michelle Elvington, Nickells, Paula Bertram, Seya, Singer, Vĕtvicka   +11 more
core   +2 more sources

Incorporation of Novel Synthetic Glycolipids in Liposomal Nanoparticles Affects Opsonization and In Vivo Clearance

Angewandte Chemie, EarlyView.
We prepared five glycosylated liposomal nanoparticles (G‐LNPs) to investigate the role of glycosylation and protein corona in modulating the in vivo behavior of G‐LNPs. We show that IgG and complement C3 adsorption enhanced liposomal nanoparticle clearance, with IgG promoting subsequent C3 binding.
Yingjie Yu, Xuehan Li, Yu Gao, Shijia Tao, Xiaofei Li, Lemei Zhao, Wenshuai Han, Hao Fan, Ying Qiu, Man Wang, Luying Zhou, Xiaoyan Fang, Wenhua Yang, Haiyang Zhang, Volker Mailänder, Daniel Crespy, Katharina Landfester, Shuai Jiang, Xiangzhao Mao   +18 more
wiley   +2 more sources

The Sez6 Family Inhibits Complement by Facilitating Factor I Cleavage of C3b and Accelerating the Decay of C3 Convertases

Frontiers in Immunology, 2021
The Sez6 family consists of Sez6, Sez6L, and Sez6L2. Its members are expressed throughout the brain and have been shown to influence synapse numbers and dendritic morphology. They are also linked to various neurological and psychiatric disorders.
Wen Q. Qiu, Shaopeiwen Luo, Stefanie A. Ma, Priyanka Saminathan, Herman Li, Jenny M. Gunnersen, Harris A. Gelbard, Jennetta W. Hammond   +7 more
doaj   +1 more source

Complement C3 variant and the risk of age-related macular degeneration [PDF]

, 2007
Background: Age-related macular degeneration is the most common cause of blindness in Western populations. Susceptibility is influenced by age and by genetic and environmental factors.
Armbrecht, AM, Bird, AC, Clayton, DG, Deary, IJ, Dhillon, B, Genetic Factors AMD Study G, Hayward, C, Khan, JC, Matharu, BK, Moore, AT, Morgan, J, Redmond, E, Sepp, T, Shahid, H, Thurlby, DA, Wright, AF, Yates, JRW   +16 more
core   +1 more source

Characterization of Binding Properties of Individual Functional Sites of Human Complement Factor H

Frontiers in Immunology, 2020
Factor H exists as a 155,000 dalton, extended protein composed of twenty small domains which is flexible enough that it folds back on itself. Factor H regulates complement activation through its interactions with C3b and polyanions.
Aftabul Haque, Aftabul Haque, Claudio Cortes, M. Nurul Alam, M. Nurul Alam, Maladi Sreedhar, Viviana P. Ferreira, Michael K. Pangburn   +7 more
doaj   +1 more source

SARS-CoV-2 Spike- and Nucleoprotein-Specific Antibodies Induced After Vaccination or Infection Promote Classical Complement Activation

Frontiers in Immunology, 2022
Antibodies specific for the spike glycoprotein (S) and nucleocapsid (N) SARS-CoV-2 proteins are typically present during severe COVID-19, and induced to S after vaccination.
Rachel E. Lamerton, Rachel E. Lamerton, Edith Marcial-Juarez, Sian E. Faustini, Marisol Perez-Toledo, Margaret Goodall, Siân E. Jossi, Maddy L. Newby, Iain Chapple, Thomas Dietrich, Tonny Veenith, Adrian M. Shields, Lorraine Harper, Ian R. Henderson, Julie Rayes, David C. Wraith, Steve P. Watson, Max Crispin, Mark T. Drayson, Alex G. Richter, Adam F. Cunningham   +20 more
doaj   +1 more source

Human complement factor H [PDF]

, 1986
We isolated cDNA clones coding for the functionally important tryptic N-terminal38- kDa fragment of human complement control protein factor H using polyclonal and monoclonal antibodies to screen a human liver cDNA library cloned in a bacterial expression
Dierich, Manfred P., Schulz, T. F., Schwaeble, W., Stanley, K. K., Weiss, Elisabeth H.   +4 more
core   +1 more source

Complement activation and protein adsorption by carbon nanotubes [PDF]

, 2006
As a first step to validate the use of carbon nanotubes as novel vaccine or drug delivery devices, their interaction with a part of the human immune system, complement, has been explored.
Flahaut, Emmanuel, Green, Malcolm L. H., Salvador-Morales, Carolina, Sim, Edith, Sim, Robert B., Sloan, Jeremy   +5 more
core   +2 more sources