Hydrophobic Patches
Hydrophobic Patches - Related Videos
03:22
Calcium-Dependent Hydrophobic Interaction Chromatography: A Technique to Purify Calcium-Binding Proteins Based on Hydrophobic Interactions
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2025
In this video, we demonstrate the purification of calcium-binding protein from a dialyzed cell lysate through calcium-dependent hydrophobic interaction chromatography. The calcium-binding proteins expose a hydrophobic region upon binding with calcium, facilitating interaction with a hydrophobic group on resin. Later these proteins are eluted using calcium chelator EDTA that reverses the interaction.
03:46
Butyl-Dependant Hydrophobic Interaction Liquid Chromatography: A Technique to Characterize Antibody-Drug Conjugates Based on Hydrophobic Interactions
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2025
This video demonstrates the hydrophobic interaction liquid chromatography-based characterization of antibody-drug conjugates. Using a butyl ligand-based chromatography column, the antibody-drug conjugates are characterized via hydrophobic interactions with the ligand.
09:43
Patch Clamp Electrophysiology
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2023
Neuron cell membranes are populated with ion channels that control the movement of charge into and out of the cell, thereby regulating neuron firing. One extremely useful technique for investigating the biophysical properties of these channels is called patch clamp recording. In this method, neuroscientists place a polished glass micropipette against a cell and apply suction to form a high resistance seal. This process isolates a small “patch” of membrane that contains one or more ion channels.
05:12
Pressure-polishing Pipettes for Improved Patch-clamp Recording
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Cited by 13 •
2008
This is a guide to modifying the shape of glass micropipettes. Specifically, by using heat and air pressure the taper is widened without increasing the tip opening, leading to lower pipette resistance. This is critical to obtain low noise recordings of small cells but is useful in many applications.
01:02
Long-patch Base Excision Repair
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2020
Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are: Lesion type: Depending on the type of base damage, a specific DNA glycosylase - mono or bifunctional, is recruited to the damaged site. While the sequential action of a monofunctional glycosylase favors long patch repair...
FAQs
Water exclusion favors arrangements in which nonpolar groups become less exposed to water. In proteins, this can promote burial within the molecular interior or clustering at an interface, bringing amino acid side chains and interacting surfaces into closer association. The resulting contacts can stabilize folding, binding partners, or protein complexes without requiring strong direct attraction between every nonpolar group.
These features influence whether a patch supports productive molecular contact or signals instability. A patch positioned at a suitable interface may help a protein recognize a binding partner, whereas exposed or poorly arranged nonpolar regions can indicate aggregation-prone areas. Examining patch geometry therefore connects molecular structure with protein stability, complex formation, and misfolding risk.
During folding, hydrophobic regions can become buried as the protein forms a stable interior. During molecular recognition, comparable regions may remain accessible or cluster at an interface so they can contact another molecule. Their role therefore depends on location and exposure: burial supports internal organization, while controlled surface clustering can help stabilize interactions between biological partners.
Researchers should evaluate where nonpolar regions occur, how large and shaped they are, and whether they are exposed or buried. These observations help distinguish internal features associated with folding from surface features involved in binding or membrane association. The same analysis can also highlight exposed patterns that may be relevant to aggregation, instability, or disease-related misfolding.
They are useful whenever researchers need to relate molecular surfaces to association behavior. Patches clustered at interfaces can help explain how binding partners contact one another and how protein complexes remain stable. Similar nonpolar surface features can clarify membrane association, while their distribution helps indicate whether an observed interaction reflects organized recognition or a potentially destabilizing exposed region.
Mapping these regions can identify exposed, aggregation-prone features associated with protein instability or disease-related misfolding. That information supports investigation of how altered surface patterns affect folding and association. It can also inform the design of biochemical inhibitors or engineered proteins by focusing attention on nonpolar regions that influence binding, stability, or unwanted aggregation.