Protein Coating
Protein Coating - Related Videos
13:21
Graphene Coatings for Biomedical Implants
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Cited by 37 •
2013
Graphene offers potential as a coating material for biomedical implants. In this study we demonstrate a method for coating nitinol alloys with nanometer thick layers of graphene and determine how graphene may influence implant response.
02:41
B Cell Activation on an Antigen-Coated Coverslip
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2025
This video demonstrates B cell activation in vitro. The process involves antigen interaction with B cell receptors, leading to cytoskeleton remodeling, immune synapse formation, lysosome movement, antigen internalization, processing, and subsequent presentation on MHC molecules for B cell activation.
01:32
Pinching-off of Coated Vesicles
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2023
Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
01:33
Coat Assembly and GTPases
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2023
Vesicles incorporate different coat protein subunits in different cell locations, which changes the properties of the coat, such as the shape and geometry of the transport vesicles. Thus, vesicle coat proteins also play a significant role in cargo selection. Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
01:12
Clathrin Coated Vesicles
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2023
Clathrin-coated vesicles use endocytosis to transport receptors and lysosomal hydrolases from the Golgi to the lysosome in the late secretory pathway. Clathrin-mediated endocytosis was the first described endocytic process, and Clathrin-coated vesicles remain one of the most well-studied transport vesicles. The molecular machinery that generates clathrin-coated vesicles comprises over 50 proteins that precisely coordinate vesicle formation. Cell surface receptors concentrated in indented sites...
FAQs
These three properties determine which parts of an immobilized protein remain accessible at the interface. Surface density affects how many recognition or attachment sites are presented, while orientation influences whether those sites face the surrounding environment. Conformation, meaning the protein’s structural state, can preserve or disrupt its molecular activity. Together, they help explain differences in cell attachment, selective binding, and fluid interactions.
Adsorption retains proteins at a surface through surface-associated interactions, whereas chemical coupling attaches them through a chemical linkage. These routes can produce different distributions, orientations, and conformational states. Consequently, the immobilization strategy can change which molecular features are exposed and how consistently the interface supports cell attachment, molecular recognition, or selective binding.
A coated surface changes the interface encountered by surrounding fluids, cells, and dissolved molecules. Protein density, orientation, and conformation determine which molecular features are exposed and therefore influence recognition and interactions at that boundary. Examining these relationships helps researchers interpret why otherwise similar materials can produce different biological responses, including differences in attachment, binding, or compatibility.
Development should begin with the intended biological outcome, such as promoting cell attachment, enabling selective binding, or improving compatibility at an interface. Researchers then choose an immobilization route, adsorption or chemical coupling, and evaluate the resulting protein density, orientation, and conformation. Linking those surface properties to measured biological behavior provides a basis for refining the coating.
In cell culture, coating can influence cellular attachment; in biomaterials, it can shape the biological interface; biosensors can use molecular recognition or selective binding; and separation systems can exploit selective interactions. These applications rely on controlling how proteins are presented at a surface. The same coating principles therefore support tissue engineering, diagnostics, and other biological research systems.
These experiments connect molecular surface properties with measurable biological outcomes. By comparing how changes in density, orientation, conformation, or immobilization route affect a material, researchers can identify which interface features relate to cell attachment, molecular recognition, selective binding, or interactions with fluids. That evidence supports rational design of surfaces for tissue engineering, diagnostics, and other biological research systems.