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Articles 1 - 11 of 11
Full-Text Articles in Biochemistry, Biophysics, and Structural Biology
Effect Of Intracellular Expression Of Antimicrobial Peptide Ll-37 On Growth Of Escherichia Coli Strain Top10 Under Aerobic And Anaerobic Conditions, Wei Liu, Shi Dong, Fei Xu, Xue Wang, T. Withers, Hongwei Yu, Xin Wang
Effect Of Intracellular Expression Of Antimicrobial Peptide Ll-37 On Growth Of Escherichia Coli Strain Top10 Under Aerobic And Anaerobic Conditions, Wei Liu, Shi Dong, Fei Xu, Xue Wang, T. Withers, Hongwei Yu, Xin Wang
Hongwei Yu
Antimicrobial peptides (AMPs) can cause lysis of target bacteria by directly inserting themselves into the lipid bilayer. This killing mechanism confounds the identification of the intracellular targets of AMPs. To circumvent this, we used a shuttle vector containing the inducible expression of a human cathelicidin-related AMP, LL-37, to examine its effect on Escherichia coli TOP10 under aerobic and anaerobic growth conditions. Induction of LL-37 caused growth inhibition and alteration in cell morphology to a filamentous phenotype. Further examination of the E. coli cell division protein FtsZ revealed that LL-37 did not interact with FtsZ. Moreover, intracellular expression of LL-37 results …
Synchronous Opening And Closing Motions Are Essential For Camp-Dependent Protein Kinase A Signaling, Atul K. Srivastava, Leanna R. Mcdonald, Alessandro Cembran, Jonggul Kim, Larry R. Masterson, Christopher L. Mcclendon, Susan S. Taylor, Gianluigi Veglia
Synchronous Opening And Closing Motions Are Essential For Camp-Dependent Protein Kinase A Signaling, Atul K. Srivastava, Leanna R. Mcdonald, Alessandro Cembran, Jonggul Kim, Larry R. Masterson, Christopher L. Mcclendon, Susan S. Taylor, Gianluigi Veglia
Larry Masterson
Differential Muscle Hypertrophy Is Associated With Satellite Cell Numbers And Akt Pathway Activation Following Activin Type Iib Receptor Inhibition In Mtm1 P.R69c Mice, Michael Lawlor, Marissa Viola, Hui Meng, Rachel Edelstein, Fujun Liu, Ke Yan, Elizabeth Luna, Alexandra Lerch-Gaggl, Raymond Hoffmann, Christopher Pierson, Anna Buj-Bello, Jennifer Lachey, Scott Pearsall, Lin Yang, Cecilia Hillard, Alan Beggs
Differential Muscle Hypertrophy Is Associated With Satellite Cell Numbers And Akt Pathway Activation Following Activin Type Iib Receptor Inhibition In Mtm1 P.R69c Mice, Michael Lawlor, Marissa Viola, Hui Meng, Rachel Edelstein, Fujun Liu, Ke Yan, Elizabeth Luna, Alexandra Lerch-Gaggl, Raymond Hoffmann, Christopher Pierson, Anna Buj-Bello, Jennifer Lachey, Scott Pearsall, Lin Yang, Cecilia Hillard, Alan Beggs
Elizabeth J. Luna
X-linked myotubular myopathy is a congenital myopathy caused by deficiency of myotubularin. Patients often present with severe perinatal weakness, requiring mechanical ventilation to prevent death from respiratory failure. We recently reported that an activin receptor type IIB inhibitor produced hypertrophy of type 2b myofibers and modest increases of strength and life span in the severely myopathic Mtm1δ4 mouse model of X-linked myotubular myopathy. We have now performed a similar study in the less severely symptomatic Mtm1 p.R69C mouse in hopes of finding greater treatment efficacy. Activin receptor type IIB inhibitor treatment of Mtm1 p.R69C animals produced behavioral and histological evidence …
Characterization Of A Recently Purified Thermophilic Dnase From A Novel Thermophilic Fungus, Kyle Landry, Robert Levin
Characterization Of A Recently Purified Thermophilic Dnase From A Novel Thermophilic Fungus, Kyle Landry, Robert Levin
Kyle S Landry
Crystal Structure And Functional Assignment Of Yfau, A Metal Ion Dependent Class Ii Aldolase From Escherichia Coli K12, Dean Rea, Rebecca Hovington, John Rakus, John Gerlt, Vilmos Fu¨Lo¨P, Timothy Bugg, David Roper
Crystal Structure And Functional Assignment Of Yfau, A Metal Ion Dependent Class Ii Aldolase From Escherichia Coli K12, Dean Rea, Rebecca Hovington, John Rakus, John Gerlt, Vilmos Fu¨Lo¨P, Timothy Bugg, David Roper
John F. Rakus
One of the major challenges in the postgenomic era is the functional assignment of proteins using sequence- and structure-based predictive methods coupled with experimental validation. We have used these approaches to investigate the structure and function of theEscherichia coli K-12 protein YfaU, annotated as a putative 4-hydroxy-2-ketoheptane-1,7-dioate aldolase (HpcH) in the sequence databases. HpcH is the final enzyme in the degradation pathway of the aromatic compound homoprotocatechuate. We have determined the crystal structure of apo-YfaU and the Mg2+−pyruvate product complex. Despite greater sequence and structural similarity to HpcH, genomic context suggests YfaU is instead a 2-keto-3-deoxy sugar aldolase like the …
Acute Modulation Of Sugar Transport In Brain Capillary Endothelial Cell Cultures During Activation Of The Metabolic Stress Pathway, Anthony Cura, Anthony Carruthers
Acute Modulation Of Sugar Transport In Brain Capillary Endothelial Cell Cultures During Activation Of The Metabolic Stress Pathway, Anthony Cura, Anthony Carruthers
Anthony J. Cura
GLUT1-catalyzed equilibrative sugar transport across the mammalian blood-brain barrier is stimulated during acute and chronic metabolic stress; however, the mechanism of acute transport regulation is unknown. We have examined acute sugar transport regulation in the murine brain microvasculature endothelial cell line bEnd.3. Acute cellular metabolic stress was induced by glucose depletion, by potassium cyanide, or by carbonyl cyanide p-trifluoromethoxyphenylhydrazone, which reduce or deplete intracellular ATP within 15 min. This results in a 1.7-7-fold increase in V(max) for zero-trans 3-O-methylglucose uptake (sugar uptake into sugar-free cells) and a 3-10-fold increase in V(max) for equilibrium exchange transport (intracellular [sugar] = extracellular [sugar]). …
Development Of A Novel Affinity Membrane Purification System For Deoxyribonuclease, Kyle Landry, Robert Levin
Development Of A Novel Affinity Membrane Purification System For Deoxyribonuclease, Kyle Landry, Robert Levin
Kyle S Landry
Evolution Of A Plant-Specific Copper Chaperone Family For Chloroplast Copper Homeostasis., José Argüello, Crysten Blaby-Haas, Teresita Padilla-Benavides, Roland Stube, Sabeeha Merchant
Evolution Of A Plant-Specific Copper Chaperone Family For Chloroplast Copper Homeostasis., José Argüello, Crysten Blaby-Haas, Teresita Padilla-Benavides, Roland Stube, Sabeeha Merchant
José M. Argüello
Metallochaperones traffic copper (Cu(+)) from its point of entry at the plasma membrane to its destination. In plants, one destination is the chloroplast, which houses plastocyanin, a Cu-dependent electron transfer protein involved in photosynthesis. We present a previously unidentified Cu(+) chaperone that evolved early in the plant lineage by an alternative-splicing event of the pre-mRNA encoding the chloroplast P-type ATPase in Arabidopsis 1 (PAA1). In several land plants, recent duplication events created a separate chaperone-encoding gene coincident with loss of alternative splicing. The plant-specific Cu(+) chaperone delivers Cu(+) with specificity for PAA1, which is flipped in the envelope relative to …
Insights Into The Cation Permeation Pathway Of Channelrhodopsin-2, Robert Dempski, Ryan Richards
Insights Into The Cation Permeation Pathway Of Channelrhodopsin-2, Robert Dempski, Ryan Richards
Robert E. Dempski
Channelrhodopsin-2 (ChR2) is a light-activated, non-selective cation channel endogenous to the green algae Chlamydomonas reinhardtii. The unique properties of ChR2 have made it a useful tool in the field of optogenetics. However, the mechanism of ion conductance is not well resolved. Elucidation of the crystal structure of the channelrhodopsin chimera C1C2 has provided structural insight on the putative ChR2 ion conductance pathway. However, it is not clear how the chimeric structure correlates to ChR2 function.
Purification Of An Inducible Dnase From A Thermophilic Fungus, Kyle Landry, Andrea Vu, Robert Levin
Purification Of An Inducible Dnase From A Thermophilic Fungus, Kyle Landry, Andrea Vu, Robert Levin
Kyle S Landry
Purification And Characterization Of Iso-Ribonucleases From A Novel Thermophilic Fungus, Kyle Landry, Robert Levin
Purification And Characterization Of Iso-Ribonucleases From A Novel Thermophilic Fungus, Kyle Landry, Robert Levin
Kyle S Landry