Results 141 to 150 of about 8,186,126 (347)

Elucidation of the Heme Binding Site of Heme-regulated Eukaryotic Initiation Factor 2α Kinase and the Role of the Regulatory Motif in Heme Sensing by Spectroscopic and Catalytic Studies of Mutant Proteins*

Journal of Biological Chemistry, 2008
Heme-regulated eukaryotic initiation factor 2α (eIF2α) kinase (HRI) functions in response to the heme iron concentration. At the appropriate heme iron concentrations under normal conditions, HRI function is suppressed by binding of the heme iron ...
J. Igarashi, Motohiko Murase, Aya Iizuka, F. Pichierri, M. Martínková, Toru Shimizu   +5 more
semanticscholar   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source

Functional rescue of mutant ABCA1 proteins by sodium 4-phenylbutyrate[S]

Journal of Lipid Research, 2013
Mutations in the ATP-binding cassette transporter A1 (ABCA1) are a major cause of decreased HDL cholesterol (HDL-C), which infers an increased risk of cardiovascular disease (CVD). Many ABCA1 mutants show impaired localization to the plasma membrane. The
Brie Sorrenson, Rachel J. Suetani, Michael J.A. Williams, Vivienne M. Bickley, Peter M. George, Gregory T. Jones, Sally P.A. McCormick   +6 more
doaj   +1 more source

Expression of EGFR-mutant proteins and genomic evolution in EGFR-mutant transformed small cell lung cancer. [PDF]

J Thorac Dis, 2023
Zhang SL, Zhang CY, Chen YQ, Li YF, Xie Z, Zhang XC, Zhou Q, Zhong WZ, Huang J, Sun H, Zheng MY, Xiao FM, Yan HH, Lu DX, Lv ZY, Wu YL, Chen HJ, Yang JJ.   +17 more
europepmc   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

The proteasome lid triggers COP9 signalosome activity during the transition of Saccharomyces cerevisiae cells into quiescence. [PDF]

, 2019
The class of Cullin–RING E3 ligases (CRLs) selectively ubiquitinate a large portion of proteins targeted for proteolysis by the 26S proteasome. Before degradation, ubiquitin molecules are removed from their conjugated proteins by deubiquitinating enzymes,
Bramasole, Lylan, Cirigliano, Angela, Glickman, Michael H., Gurevich, Sylvia, Harshuk, Dana, Pick, Elah, Rinaldi, Teresa, Sinha, Abhishek, Yu, Zanlin   +8 more
core  

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Rapid and quantitative detection of multiple antibodies against SARS-CoV-2 mutant proteins by photo-immobilized microarray. [PDF]

Anal Sci, 2022
Akimoto J, Kashiwagi H, Morishima N, Obuse S, Isoshima T, Kageyama T, Nakajima H, Ito Y.   +7 more
europepmc   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source