Results 51 to 60 of about 71,714 (251)

Precise Similarity of Many Human Proteins to Proteins of Prokarya [PDF]

, 2007
Proteins originated in early forms of life and have long survived, because they have always been required. Some recognizably similar proteins are found in all sequence comparisons between species, no matter how distant, including prokaryotes and ...
Roy Britten
core   +2 more sources

Phylogenetic analysis reveals an ancient gene duplication as the origin of the MdtABC efflux pump. [PDF]

, 2020
The efflux pumps from the Resistance-Nodulation-Division family, RND, are main contributors to intrinsic antibiotic resistance in Gram-negative bacteria. Among this family, the MdtABC pump is unusual by having two inner membrane components.
Górecki, Kamil, McEvoy, Megan M
core   +2 more sources

Nanoparticle Immunoadjuvant Complexes Augment Germinal Center Responses to Vaccination

Advanced Science, EarlyView.
Scaffolding IL‐21 on the surface of a self‐assembling nanoparticle immunogen drives improved germinal center and humoral immune responses. These nanoparticle immunoadjuvant complexes (NICs) functionally modulate the germinal center driving improved somatic hypermutation and antibody maturation, suggesting this platform has potential utility as a ...
Nicholas J. Tursi, Colby J. Agostino, Jinwei Huang, Toshitha Kannan, Niklas Laenger, Jennifer Londregan, Katlyn Lederer, Michaela Helble, Nicole Bedanova, Cory Livingston, Ebony N. Gary, Madison McCanna, Marta Tarquis Medina, Rumi Habib, Ignacio Rodriguez Relaño, Ivan Maillard, Ami Patel, David Allman, Andrew Kossenkov, Amelia Escolano, Daniel W. Kulp, David. B. Weiner   +21 more
wiley   +1 more source

Molecular mechanism of Gαi activation by non-GPCR proteins with a Gα-Binding and Activating motif [PDF]

, 2017
Heterotrimeric G proteins are quintessential signalling switches activated by nucleotide exchange on Gα. Although activation is predominantly carried out by G-protein-coupled receptors (GPCRs), non-receptor guanine-nucleotide exchange factors (GEFs) have
Baillie, George S., Blanco, Francisco J., Blanco-Canosa, Juan B., Cerione, Richard A., de la Cruz-Morcillo, Miguel Angel, DiGiacomo, Vincent, Garcia-Marcos, Mikel, Ibáñez de Opakua, Alain, Leyme, Anthony, Marivin, Arthur, Merino, Nekane, Nguyen, Lien T., Parag-Sharma, Kshitij, Ramachandran, Sekar, Villate, Maider   +14 more
core   +1 more source

Rescuing Mitochondrial Dysfunction in Macrophages Prevents Osteonecrosis of the Jaw in Anti‐Resorptive Therapy

Advanced Science, EarlyView.
Schematic model showing the suggested mechanism that ZA induces classical activation of macrophages by impairing mitochondrial biofunction and inhibiting mitochondrial clearance to contribute to the pathological process of BRONJ. RAPA‐loaded nanoparticles ZDPR has shown potential in alleviating BRONJ lesions as well as treating osteoporosis or ...
Hang Zhang, Xin Shen, Haiyang Liu, Xinxi Yuan, Mumin Cao, Xuepeng Lv, Ziji Ling, Songsong Guo, Rongyao Xu, Xiang Li, Hongbing Jiang   +10 more
wiley   +1 more source

Clinical Persistence of Chlamydia trachomatis Sexually Transmitted Strains Involves Novel Mutations in the Functional αββα Tetramer of the Tryptophan Synthase Operon. [PDF]

, 2019
Clinical persistence of Chlamydia trachomatis (Ct) sexually transmitted infections (STIs) is a major public health concern. In vitro persistence is known to develop through interferon gamma (IFN-γ) induction of indoleamine 2,3-dioxygenase (IDO), which ...
Dean, Deborah, Ferrin, Thomas E, Hyuk Suh, Jung, Somboonna, Naraporn, Ziklo, Noa   +4 more
core   +1 more source

Oncolytic Probiotics with Molecular Pili for Solid Tumor Therapy

Advanced Science, EarlyView.
This study identifies Lactobacillus rhamnosus as an intrinsic oncolytic agent that triggers tumor metabolic collapse via calcium‐dependent ROS bursts. By chemically anchoring collagen‐targeting “molecular pili” to the bacterial surface, the engineered non‐transgenic probiotic (LR@MP) achieves targeted colonization and potent solid tumor suppression ...
Haodong Ge, Chengsheng Ding, Xiao Yang, Si Gao, Changjie Yang, Yuchen Hou, Hongye Wang, Linke Bian, Hao Zhong, Yifan Qu, Luyang Zhang, Junjun Ma, Zhengwei Cai, Wenguo Cui, Minhua Zheng   +14 more
wiley   +1 more source

Cellular and Subcellular Expression of Golf/Gs and Gq/G11 α-Subunits in Rat Pancreatic Endocrine Cells [PDF]

Journal of Histochemistry & Cytochemistry, 1999
We studied the cellular and subcellular localization of G α-subunits in pancreas by immunocytochemistry. Golfα and G11α were specifically localized in islet insulin B-cells and glucagon A-cells, respectively. Gs α and Gqα labeling was more abundant in B-cells. The presence of Golfα in B-cells was confirmed by in situ hybridization.
A, Astesano, K, Regnauld, N, Ferrand, D, Gingras, M, Bendayan, G, Rosselin, S, Emami   +6 more
openaire   +2 more sources

Macrophage–Derived Ferritin Exacerbates Silica‐Induced Pulmonary Fibrosis via PIK3R2‐Mediated Fibroblast Differentiation

Advanced Science, EarlyView.
This study identifies ferritin as a pivotal mediator of silica‐induced pulmonary fibrosis. Macrophage‐derived ferritin drives fibroblast‐to‐myofibroblast differentiation via the PIK3R2/SMAD pathway, while ferritin knockdown alleviates fibrosis. These findings define ferritin as both a biomarker and pathogenic driver, highlighting ferritin‐PIK3R2 ...
Liqun Wang, Xuxi Chen, Hongying Quan, Rui Qian, Shuyu Gong, Qiurong He, Ying Gao, Ajia Axi, Manyu Zhao, Qin Zhang, Ling Zhang, Lijun Peng, Xin Sun, Ben Zhang, Yuqin Yao   +14 more
wiley   +1 more source

Molecular architecture of Gαo and the structural basis for RGS16-mediated deactivation [PDF]

, 2008
Heterotrimeric G proteins relay extracellular cues from heptahelical transmembrane receptors to downstream effector molecules. Composed of an α subunit with intrinsic GTPase activity and a βγ heterodimer, the trimeric complex dissociates upon receptor ...
Berman, C.-K. Chen, Chan, Chen, Chen, Chen, Coleman, De Vries, Grafstein-Dunn, He, Heximer, K. C. Slep, Kimple, Koelle, Kozasa, Kozasa, Kudlacek, Lodowski, M. A. Kercher, M. I. Simon, McIntire, Neubig, Noel, P. B. Sigler, Slep, Snow, Sondek, Sunahara, T. Wieland, Tesmer, Tesmer, Valenzuela, Wang, Wilkie, Willars   +34 more
core   +4 more sources