Prenyl Groups
Prenyl Groups - Related Videos
13:51
Detection of Small GTPase Prenylation and GTP Binding Using Membrane Fractionation and GTPase-linked Immunosorbent Assay
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Cited by 6 •
2018
Here we describe a protocol to investigate the prenylation and guanosine-5'-triphosphate (GTP)-loading of Rho GTPase. This protocol consists of two detailed methods, namely membrane fractionation and a GTPase-linked immunosorbent assay. The protocol can be used for measuring the prenylation and GTP loading of different other small GTPases.
11:15
A Preclinical Mouse Model of Osteosarcoma to Define the Extracellular Vesicle-mediated Communication Between Tumor and Mesenchymal Stem Cells
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Cited by 19 •
2018
Direct injection of cancer-derived extracellular vesicles (EVs) leads to reprogramming of bone marrow supporting tumor progression; however, which cells mediate this effect is unclear. Herein, we describe a step-by-step protocol to investigate EV-mediated tumor-mesenchymal stem cell (MSC) interactions in vivo, revealing a crucial role for EV-educated MSCs in metastasis.
08:17
Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
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Cited by 7 •
2017
This study describes the successful generation of a new chronic obstructive pulmonary disease (COPD) animal model by repeatedly exposing mice to high concentrations of ozone.
06:43
Novel Combination Of Antioxidants To Restore Healthy Intercellular Communication In An In vitro Model Using Conditioned Medium From Senescent Cells
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2026
This method studies how senescent skin fibroblasts affect healthy ones. Senescence is induced via UVB exposure, and the conditioned medium is applied to normal fibroblasts. It helps evaluate bioactive compounds targeting altered cell-to-cell communication in skin aging.
05:57
Synthesizing Amino Acids Modified with Reactive Carbonyls in Silico to Assess Structural Effects Using Molecular Dynamics Simulations
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2024
Here, we describe a protocol for the optimization and parameterization of amino acid residues modified with reactive carbonyl species, adaptable to protein systems. The protocol steps include structure design and optimization, charge assignments, parameter construction, and preparation of protein systems.
FAQs
Prenyltransferases attach either farnesyl or geranylgeranyl groups to selected proteins, frequently at a cysteine near the C terminus. This enzymatic step creates the lipid modification that supports membrane association. Because the attached group becomes part of the protein’s membrane-targeting feature, prenyltransferase activity can affect where signaling or trafficking proteins operate inside the cell.
Hydrophobicity allows the attached isoprenoid group to promote association between a modified protein and cellular membranes. That positioning can bring the protein into membrane-organized environments where relevant molecular partners are located. As a result, prenyl groups influence not only protein location but also interactions that contribute to signaling, vesicle trafficking, and membrane organization.
A cysteine near the C terminus commonly serves as the attachment site for a farnesyl or geranylgeranyl group. Its position gives the modification access to the protein’s terminal region, where the added lipid can function as a membrane-associated anchor. This arrangement helps connect the protein’s sequence features with its cellular localization and activity.
The two modifications are distinguished by the isoprenoid group attached to the protein: farnesyl or geranylgeranyl. Both are prenyl groups and can promote membrane association, but identifying which group is present helps characterize the specific prenylation state of a protein. This distinction is relevant when examining protein localization, interactions, or prenyltransferase-dependent regulation.
Prenyl groups are particularly relevant to signaling proteins, vesicle trafficking, and membrane organization. Their contribution to membrane association helps position proteins within cellular systems that coordinate communication and transport. Studying these modifications therefore connects molecular lipid attachment with broader biological outcomes, including how cells organize membranes and regulate growth-related signaling.
Defects in processes involving prenyl groups can disrupt the localization or function of proteins that participate in signaling and membrane-related activities. Such disturbances may interfere with cell communication and growth. Examining these defects helps researchers connect altered protein targeting with changes in cellular behavior rather than treating prenylation as an isolated biochemical event.
Prenyl groups identify protein-localization and signaling mechanisms that may be therapeutically targeted. Research can examine prenylation-dependent pathways in the context of disrupted cell growth or communication, while also studying lipid metabolism and membrane organization. This makes prenylation relevant both for understanding disease-associated cellular changes and for developing strategies aimed at modifying those pathways.