Results 51 to 60 of about 15,661,277 (406)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Functional implications of the exon 9 splice insert in GluK1 kainate receptors

eLife
Kainate receptors are key modulators of synaptic transmission and plasticity in the central nervous system. Different kainate receptor isoforms with distinct spatiotemporal expressions have been identified in the brain.
Surbhi Dhingra, Prachi M Chopade, Rajesh Vinnakota, Janesh Kumar   +3 more
doaj   +1 more source

Oxidation of F-actin controls the terminal steps of cytokinesis

Nature Communications, 2017
Cytokinetic abscission relies on the local constriction after cytoskeleton disassembly, but it is not known how the actin filaments are disassembled. Here, the authors show that the redox enzyme MICAL1 is recruited by Rab35 and induces oxidation-mediated
Stéphane Frémont, Hussein Hammich, Jian Bai, Hugo Wioland, Kerstin Klinkert, Murielle Rocancourt, Carlos Kikuti, David Stroebel, Guillaume Romet-Lemonne, Olena Pylypenko, Anne Houdusse, Arnaud Echard   +11 more
doaj   +1 more source

Integrin-mediated membrane blebbing is dependent on the NHE1 and NCX1 activities. [PDF]

, 2011
Integrin-mediated signal transduction and membrane blebbing have been well studied to modulate cell adhesion, spreading and migration^1-6^. However, the relationship between membrane blebbing and integrin signaling has not been explored.
Chi-Hung Lin, Chih-Yung Tang, Ching-Ping Tseng, Szecheng J. Lo, Tien-Shen Lew, Tsung-Yu Chen, Wei-Lien Tseng, Yu-Sun Chang, Yung-Hsiang Yi   +8 more
core   +1 more source

Hysteresis and bi-stability by an interplay of calcium oscillations and action potential firing

, 2006
Many cell types exhibit oscillatory activity, such as repetitive action potential firing due to the Hodgkin-Huxley dynamics of ion channels in the cell membrane or reveal intracellular inositol triphosphate (IP$_3$) mediated calcium oscillations (CaOs ...
A. P. R. Theuvenet, C. C. A. M. Gielen, D. L. Ypey, J. Guckenheimer, J. M. A. M. Kusters, J. M. Cortes, J. D. Murray, O. Aslanidi, T. R. Chay, W. P. M. van Meerwijk   +9 more
core   +1 more source

Synthesis of extracellular matrix components by human ciliary muscle cells in culture [PDF]

, 1992
The production and spatial organization of connective tissue components in ciliary muscle cell cultures was studied with immunohistochemical and ultrastructural methods.
Baur, A., Lütjen-Drecoll, E., Tamm, Ernst R.   +2 more
core   +1 more source

T cell antigen recognition at the cell membrane [PDF]

Molecular Immunology, 2012
T cell antigen receptors (TCRs) on the surface of T cells bind specifically to particular peptide bound major histocompatibility complexes (pMHCs) presented on the surface of antigen presenting cells (APCs). This interaction is a key event in T cell antigen recognition and activation.
Jun, Huang, Christina, Meyer, Cheng, Zhu
openaire   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Engineering and Characterization of 3-Aminotyrosine-Derived Red Fluorescent Variants of Circularly Permutated Green Fluorescent Protein

Biosensors
Introducing 3-aminotyrosine (aY), a noncanonical amino acid (ncAA), into green fluorescent protein (GFP)-like chromophores shows promise for achieving red-shifted fluorescence. However, inconsistent results, including undesired green fluorescent species,
Hao Zhang, Xiaodong Tian, Jing Zhang, Hui-wang Ai   +3 more
doaj   +1 more source

DNA replication licensing factor Cdc6 and Plk4 kinase antagonistically regulate centrosome duplication via Sas-6

Nature Communications, 2017
Centrosome duplication is synchronized with cell cycle events but how this is regulated at a molecular level is unclear. Here, the authors show that the DNA replication licensing factor Cdc6 restrains centrosome duplication via binding and inhibiting Sas-
Xiaowei Xu, Shijiao Huang, Boyan Zhang, Fan Huang, Wangfei Chi, Jingyan Fu, Gang Wang, Si Li, Qing Jiang, Chuanmao Zhang   +9 more
doaj   +1 more source