Hif1 Beta Subunit
Hif1 Beta Subunit - Related Videos
01:25
Beta
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2024
Beta is a crucial metric in finance used to assess an investment's risk and expected return relative to the overall market. It is calculated as the slope of the line in a scatterplot that compares the returns of an individual stock to the returns of the market benchmark, typically represented by a broad market index. Beta quantifies how much a stock's price moves in response to market movements, providing insight into its volatility and systematic risk. A beta of one indicates that the stock's...
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 6 •
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.
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.
09:50
In situ Quantification of Pancreatic Beta-cell Mass in Mice
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Cited by 6 •
2010
The following protocol outlines the process of pancreatic dissection for virtual slice imaging, and the subsequent quantification of all GFP-tagged beta-cells in the entire pancreas.
06:34
A Tailored HPLC Purification Protocol That Yields High-purity Amyloid Beta 42 and Amyloid Beta 40 Peptides, Capable of Oligomer Formation
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Cited by 6 •
2017
Herein we report a tailored HPLC purification protocol that yields high-purity amyloid beta 42 (Aβ42) and amyloid beta 40 (Aβ40) peptides, capable of oligomer formation. Amyloid beta is a highly aggregation prone, hydrophobic peptide implicated in Alzheimer's disease. The amyloidogenic nature of the peptide makes its purification a challenge.
FAQs
Constitutive expression keeps HIF-1 beta available as a potential partner when oxygen conditions change. This distinguishes it from a response that would require producing the subunit only after hypoxia begins. Consequently, regulation can depend on formation and activity of the HIF-1 alpha-containing complex, helping connect oxygen availability with coordinated gene expression.
The basic helix-loop-helix and PAS domains are central structural features of the subunit. Together, they support the protein interactions needed for dimerization with HIF-1 alpha and for the resulting complex to engage DNA at hypoxia-response elements. Their presence therefore links molecular assembly with transcriptional regulation during low-oxygen conditions.
Unlike the constitutively expressed beta subunit, HIF-1 alpha supplies the oxygen-responsive counterpart described in the hypoxic complex. This division of roles matters because beta provides a recurring dimerization partner, whereas the alpha-containing complex forms under low-oxygen conditions. Studying both components clarifies how oxygen sensing becomes coordinated gene regulation.
Binding to hypoxia-response elements gives the HIF-1 complex a route to control specific genes rather than producing a nonspecific cellular reaction. The regulated outputs include angiogenesis, glucose metabolism, and cellular adaptation to low oxygen. Examining these target-gene effects helps connect DNA binding with physiological changes associated with oxygen homeostasis.
Research on HIF-1 beta extends beyond oxygen sensing itself because disrupted oxygen regulation affects several biological settings. The overview identifies development, cancer biology, and ischemic disease as important contexts. In each, examining this subunit can help relate altered HIF-1 signaling to changes in vascular growth, metabolism, or cellular adaptation under low-oxygen conditions.
Studies can ask whether changes in dimerization with HIF-1 alpha alter binding of the complex to hypoxia-response elements and activation of specific genes. Researchers can then relate those transcriptional changes to angiogenesis, glucose metabolism, and adaptation to low oxygen. This framework connects molecular observations to broader biological outcomes without treating oxygen response as a single process.