Pharmabase is designed to form a bridge between the molecular dimension of cell transport processes and the functional manipulation of the protein players. It has as its emphasis membrane transport and related pharmacology. Several search and navigation options are available, including membrane transport, disease, and a graphic interface arranged by pathway and cell type. The level of entry to the database can be tailored to the investigator's level of expertise. The final product of Pharmabase is a Compound Record detailing the use and targets of individual compounds. Navigation routes generally fall into hierarchical keys and are cross-referenced. Pharmabase encourages input from its user community. It is maintained by the BioCurrents Research Center, an NIH resource funded through the National Center for Research Resources (NCRR).
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Adhesion-driven vesicle translocation through membrane-covered pores.
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Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany. Electronic address:
Translocation across barriers and through constrictions is a mechanism that is often used in vivo for transporting material between compartments. A specific example is apicomplexan parasites invading host cells through the tight junction that acts as a pore, and a similar barrier crossing is involved in drug delivery using lipid vesicles penetrating intact skin. Here, we use triangulated membranes and energy minimization to study the translocation of vesicles through pores with fixed radii.
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Nat Commun
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School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China.
The high performance of two-dimensional (2D) channel membranes is generally achieved by preparing ultrathin or forming short channels with less tortuous transport through self-assembly of small flakes, demonstrating potential for highly efficient water desalination and purification, gas and ion separation, and organic solvent waste treatment. Here, we report the construction of vertical channels in graphene oxide (GO) membrane based on a substrate template with asymmetric pores. The membranes achieved water permeance of 2647 L m h bar while still maintaining an ultrahigh rejection rate of 99.
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Department of Neuropsychiatry, Dongguk University, School of Medicine, Seoul, Republic of Korea.
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Cancer Centre, Faculty of Health Sciences, University of Macau, Taipa, Macau, China; Ministry of Education Frontiers Science Center for Precision Oncology, University of Macau, Taipa, Macau, China. Electronic address:
Chemoresistance is a multifactorial phenomenon and the primary cause to the ineffectiveness of oncotherapy and cancer recurrence. Membrane drug transporters are crucial for drug delivery and disposition in cancer cells. Changes in the expression and functionality of these transporters lead to decreased intracellular accumulation and reduced toxicity of antineoplastic drugs.
View Article and Find Full Text PDFThe juxtamembrane sequence of small ankyrin 1 mediates the binding of its cytoplasmic domain to SERCA1 and is required for inhibitory activity.
J Biol Chem
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Department of Physiology, School of Medicine, University of Maryland Baltimore, Baltimore, MD, 21201, USA. Electronic address:
Sarcoplasmic/endoplasmic reticulum Ca-ATPase1 (SERCA1) is responsible for the clearance of cytosolic Ca in skeletal muscle. Due to its vital importance in regulating Ca homeostasis, the regulation of SERCA1 has been intensively studied. Small ankyrin 1 (sAnk1, Ank1.
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