Hydrophobic Regions
Hydrophobic Regions - Related Videos
03:22
Calcium-Dependent Hydrophobic Interaction Chromatography: A Technique to Purify Calcium-Binding Proteins Based on Hydrophobic Interactions
0 Views •
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.
11:16
Hydrophobic Salt-modified Nafion for Enzyme Immobilization and Stabilization
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Cited by 23 •
2012
This article will describe the procedure for synthesizing a hydrophobically modified Nafion enzyme immobilization membrane and how to immobilize proteins and/or enzymes within the membrane and test their specific activity.
01:03
IR Frequency Region: Fingerprint Region
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2024
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the C=O, C=N, and C=C occur between 1600–1850 cm−1. The...
02:08
A Hydrophobic Tissue Clearing Method for a Rat Brain Tissue Sample
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2025
Source: Kirchner, K.N., et al., A Hydrophobic Tissue Clearing Method for Rat Brain Tissue. J. Vis. Exp. (2020).This video demonstrates the method of hydrophobic tissue clearing of a rat brain tissue sample. The sample is sequentially dehydrated in methanol, treated with a dichloromethane and methanol mixture to dissolve lipids and pigments, and transferred to dibenzyl ether for complete tissue clearing, enabling detailed imaging without thin sectioning.
FAQs
Clustering reduces the amount of nonpolar surface exposed to water. Since water forms more favorable interactions with polar or charged groups, bringing nonpolar areas together helps minimize their contact with the surrounding aqueous environment. This hydrophobic effect can drive molecular organization and contributes to the stable arrangement of biological structures.
Within membrane lipids, hydrophobic regions help organize the membrane into a barrier that separates aqueous environments. Their poor interaction with water supports the arrangement of lipid components and limits the passage of substances through the membrane. This organization is therefore important for membrane architecture and for controlling cellular transport.
As a protein folds, hydrophobic regions can become less exposed to the surrounding water and contribute to the protein’s three-dimensional structure. Their placement within the folded molecule helps stabilize that structure, while their distribution can also influence how the protein interacts with other molecules. These effects make hydrophobic regions important for understanding protein function.
The location and extent of hydrophobic regions affect how biological molecules associate with one another. Nonpolar areas may help stabilize contacts or shape the molecular surfaces available for binding, while surrounding polar or charged groups influence the broader interaction environment. Examining these regions can therefore clarify why particular biomolecules interact selectively.
Mapping hydrophobic regions can help researchers interpret how membrane structures create barriers and regulate movement through cells. In particular, their presence in membrane lipids provides context for understanding how the membrane is organized and how substances encounter that boundary. This information connects molecular structure with the biological process of cellular transport.
Hydrophobic regions provide useful information about the surfaces and interiors that may participate in selective molecular binding. Studying their placement can help researchers examine how a drug or biomolecule interacts with a biological target and how binding relates to molecular structure. This makes hydrophobic-region analysis relevant to designing molecules with selective biological interactions.