Acf Subunits
Acf Subunits - Related Videos
06:09
In Vitro Reassociation Assay to Measure the Formation of 80S Ribosomal Particles Using Salt-washed Ribosomal Subunits
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2025
Here, we describe a detailed protocol for the in vitro reassociation of purified, salt-washed eukaryotic ribosomal subunits for the analysis of 80S particle formation. This method is illustrated by analyzing ribosomal subunits isolated from a wild-type strain of Saccharomyces cerevisiae and a mutant strain deficient in the ribosomal protein eL24.
22:10
Multi-target Parallel Processing Approach for Gene-to-structure Determination of the Influenza Polymerase PB2 Subunit
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Cited by 3 •
2013
Structure-based drug design plays an important role in drug development. Pursuing multiple targets in parallel greatly increases the chance of success for lead discovery. The following article highlights how the Seattle Structural Genomics Center for Infectious Disease utilizes a multi-target approach for gene-to-structure determination of the PB2 influenza A subunit.
08:55
Characterization of Multi-subunit Protein Complexes of Human MxA Using Non-denaturing Polyacrylamide Gel-electrophoresis
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Cited by 3 •
2016
This article describes a simple and rapid protocol to evaluate the oligomeric state of the dynamin-like GTPase MxA protein from lysates of human cells using a combination of non-denaturing PAGE with western blot analysis.
09:36
Recombinant α- β- and γ-Synucleins Stimulate Protein Phosphatase 2A Catalytic Subunit Activity in Cell Free Assays
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Cited by 7 •
2017
This publication presents a protocol showing how to measure the activity of recombinant protein phosphatase 2A catalytic subunit (PP2Ac) in response to recombinant α-synuclein, β-synuclein, or γ-synuclein proteins using a simple colorimetric assay. We show findings regarding α-synuclein specificity toward PP2Ac in mouse brain.
08:04
Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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2025
This study introduces a multiscale framework, spanning from DNA to protein function and neural behavior. It presents a novel approach for investigating predicted pathogenic mutations in the GABAA receptor subunit, hypothesizing that epileptogenic mutations and proximal mutations, predicted as pathogenic, may produce similar effects on the CA1 pyramidal neuron model.
FAQs
The ISWI component supplies ATP-dependent remodeling activity, converting energy from ATP hydrolysis into nucleosome repositioning. ACF1 contributes recognition and organizational functions by helping identify and arrange nucleosomal DNA while also regulating remodeling activity. Their cooperation allows the complex to modify chromatin organization rather than merely bind DNA, linking energy use to controlled nucleosome placement.
ACF1 provides an organizing and regulatory layer for the ISWI ATPase. By helping recognize nucleosomal DNA and modulate remodeling activity, it can coordinate where and how nucleosome organization occurs. This partnership matters because ATP-driven movement alone would not explain the complex’s ability to establish structured chromatin arrangements with consequences for DNA accessibility and genome function.
Nucleosome spacing determines how closely neighboring nucleosomes are arranged and therefore influences the exposure of DNA within chromatin. ACF subunit activity can create organizational states that either preserve packaging or alter access to regulatory sequences. This provides a mechanistic connection between chromatin architecture and gene regulation, while also supporting the controlled handling of DNA during replication and maintenance.
Analyzing which components form the complex and how they interact helps distinguish catalytic, recognition, organizational, and regulatory contributions. In particular, studying the relationship between ISWI and ACF1 can clarify how ATP-dependent activity becomes coordinated with nucleosomal DNA recognition. These observations connect molecular interactions to changes in nucleosome spacing, chromatin accessibility, and overall genome organization.
ACF subunit activity is relevant to gene regulation, DNA replication, and genome maintenance because each process depends on organized yet usable chromatin. Changes in nucleosome positioning can influence access to regulatory sequences, while coordinated packaging helps cells manage DNA during duplication and preserve genome function. Studying these links places ACF subunits within broader models of chromatin-dependent cellular control.
Their importance extends beyond describing chromatin structure: ACF subunits provide a way to investigate how nucleosome organization influences cellular programs. Because chromatin accessibility affects regulatory DNA, the complex is relevant to developmental biology and to disease mechanisms involving altered chromatin control. It also serves as a subject for chromatin-based research focused on connecting molecular organization with biological outcomes.