Lyophilized Protein
Lyophilized Protein - Related Videos
11:14
Mass Spectrometric Approaches to Study Protein Structure and Interactions in Lyophilized Powders
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Cited by 19 •
2015
Here, we present detailed protocols for solid-state amide hydrogen/deuterium exchange mass spectrometry (ssHDX-MS) and solid-state photolytic labeling mass spectrometry (ssPL-MS) for proteins in solid powders. The methods provide high-resolution information on protein conformation and interactions in the amorphous solid-state, which may be useful in formulation design.
07:27
The Development of Lyophilized Loop-mediated Isothermal Amplification Reagents for the Detection of Coxiella burnetii
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Cited by 7 •
2016
We described here a simple loop-mediated isothermal amplification (LAMP) method using lyophilized reagents for the detection of C. burnetii in patient samples.
02:31
Extracellular Matrix-derived Foam Fabrication via Lyophilization: A Procedure to Generate Biological Scaffolds from ECM of Decellularized Tissues
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2023
This video describes the method for synthesizing pure ECM-derived foams without the need for chemical crosslinking. These ECM-derived foams find applications as advanced 3D in vitro cell culture models or as pro-regenerative bioscaffolds.
08:46
Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
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Cited by 34 •
2015
A streamlined approach to screening for the expression of recombinant membrane proteins in Escherichia coli based on fusion to green fluorescent protein is presented.
06:26
Rapid Assessment of Membrane Protein Quality by Fluorescent Size Exclusion Chromatography
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Cited by 2 •
2023
The present protocol describes a procedure to perform fluorescent size exclusion chromatography (FSEC) on membrane proteins to assess their quality for downstream functional and structural analysis. Representative FSEC results collected for several G-protein coupled receptors (GPCRs) under detergent-solubilized and detergent-free conditions are presented.
FAQs
The process relies on a change of state: after freezing, reduced pressure allows ice to sublime, meaning it passes directly from solid to vapor. This removes water without first converting the ice to liquid. Controlling that sequence helps produce a dry protein preparation while supporting preservation of the protein’s structure during processing.
Sugars and buffers serve as formulation excipients, or added components that help protect the protein during drying and subsequent handling. Their inclusion is not incidental: formulation conditions influence whether the recovered material retains its intended structure. In chemistry and biochemistry, selecting a suitable formulation therefore becomes part of maintaining consistent protein quality.
Moisture, temperature, and formulation conditions are central control variables. If they are not managed appropriately, the preparation may aggregate or lose activity, even after drying has been completed. These factors matter during storage and handling, so a dry appearance alone does not establish that the protein remains structurally intact or functionally active.
Reconstitution requires adding a suitable solvent to the dried cake, using conditions appropriate to the specific preparation. The goal is to return the protein to a usable solution while preserving its structure and activity. Because the formulation and storage history affect performance, reconstitution is a critical step in achieving reproducible preparation for downstream chemistry or biochemistry work.
This format supports transport and long-term storage by reducing the amount of water present during handling. It also allows researchers to prepare protein solutions reproducibly when needed rather than transporting or storing the material only as a solution. These advantages are relevant for enzymes, antibodies, and other proteins used in chemistry and biochemistry.
The dried format removes water before storage and requires reconstitution with a suitable solvent before use, whereas a solution is already prepared for direct handling. Lyophilization can improve transport, storage, and preparation consistency, but it still requires control of moisture, temperature, and formulation conditions to limit aggregation or loss of protein activity.