Sucrose Egg Lysis Buffer
Sucrose Egg Lysis Buffer - Related Videos
07:45
Preparation and Fractionation of Xenopus laevis Egg Extracts
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Cited by 7 •
2008
Crude and fractionated Xenopus egg extracts can be used to provide ingredients for reconstituting cellular processes for morphological and biochemical analysis. Egg lysis and differential centrifugation are used to prepare the crude extract which in turn in used to prepare fractionated extracts and light membrane preparations.
02:56
Buffers
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2020
A solution containing appreciable amounts of a weak conjugate acid-base pair is called a buffer solution, or a buffer. Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added. A solution of acetic acid and sodium acetate is an example of a buffer that consists of a weak acid and its salt: CH3COOH (aq) + CH3COONa (aq). An example of a buffer that consists of a weak base and its salt is a solution of ammonia and ammonium chloride: NH3 (aq) + NH4Cl...
04:35
Buffers - Concepts
0 Views •
2020
Buffers When an Arrhenius acid (HA) is added to water, it dissociates into its conjugate base (A-) and a hydrogen cation (H+). HA + H2O → H+(aq) + A-(aq) The amount of hydrogen ions present in the solution determines the acidity of the solution, where more hydrogen ions indicate a lower or more acidic pH. Similarly, when a strong Arrhenius base (BOH) is added to water, it dissociates into its conjugate acid (B+) and a hydroxide ion (OH-). BOH + H2O → B+(aq) + OH-(aq) Generally, the addition of...
14:31
Buffers - Student Protocol
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Preparing 50 mM NaH2PO4 Buffer, pH 7Expand In the first part of this experiment, you will prepare a sodium phosphate solution buffered at pH 7.0. Monosodium phosphate is a weak acid with the conjugate base, disodium phosphate. Unadjusted monosodium phosphate solutions usually have a pH of about 4 - 6. Buffers are most effective close to their pKa, which is 6.8 to 7.2 for monosodium phosphate. So, you will use NaOH to push the...
11:00
Liquid Phase Reactor: Sucrose Inversion
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Both batch and continuous flow reactors are used in catalytic reactions. Packed beds, which use solid catalysts and a continuous flow, are the most common configuration. In the absence of an extensive recycle stream, such packed bed reactors are typically modeled as "plug flow". The other most common continuous reactor is a stirred tank, which is assumed to be perfectly...
FAQs
The solution must release the contents of eggs or early embryos without destroying the structures needed for analysis. Its lysis activity promotes controlled membrane disruption, while sucrose provides osmotic support that helps limit damage to nuclei and organelles. This balance allows researchers to examine released cellular material while retaining selected structural components for downstream biological studies.
Osmotic support helps maintain the integrity of nuclei and organelles as cellular membranes are disrupted. Without preserving these components, lysis could reduce the quality of material available for microscopy, biochemical assays, or molecular studies. In developmental biology, maintaining structural integrity is especially useful because early embryonic organization can then be examined after cellular contents have been released.
The quality and reproducibility of the recovered cellular fractions depend on controlled lysis conditions. Conditions that release material while preserving selected nuclei or organelles support clearer microscopy and more reliable biochemical or molecular analysis. Standardization also makes samples more comparable across experiments, helping researchers distinguish biological differences from variation introduced during sample preparation.
Preserving nuclei and organelles makes it possible to study more than the soluble contents released during lysis. Researchers can examine these structures directly by microscopy or separate them from other cellular material for biochemical and molecular assays. The resulting information can connect cellular organization with composition, which is valuable when investigating early embryonic structures.
Researchers apply the buffer to eggs or early embryos under standardized lysis conditions, allowing cellular membranes to open and contents to be released. The resulting material can then be separated into nuclei, organelles, or soluble extracts, depending on the analysis. These fractions may proceed to microscopy, biochemical assays, or molecular studies without requiring the same downstream treatment for every component.
This approach is useful when researchers need to investigate cellular organization during the earliest stages of development. Eggs and early embryos contain structures whose location and integrity can provide information about embryonic organization. By releasing contents while preserving selected components, the method supports microscopy and molecular or biochemical analyses that connect early developmental structure with cellular composition.