Small-scale Preparation
Small-scale Preparation - Related Videos
08:36
Scaled-Up Preparation of an Intermediate of Upatinib, ACT051-3
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2023
Here, we present a protocol for the scaled-up synthesis of the intermediate tert-butyl (5-toluenesulfonyl-5h-pyrrole [2,3-b] pyrazine-2-yl) carbamate (ACT051-3) of Upatinib.
09:16
Medium-scale Preparation of Drosophila Embryo Extracts for Proteomic Experiments
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Cited by 4 •
2017
The goal of this protocol is to provide a straightforward and inexpensive approach to collecting Drosophila embryos at medium scale (0.5-1 g) and preparing protein extracts that can be used in downstream proteomic applications, such as affinity purification-mass spectrometry (AP-MS).
02:41
pH Scale
0 Views •
2020
Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
09:45
Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
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2017
Reliable, intermediate scale preparation of 1,2,3,4,5-pentamethylcyclopentadiene (Cp*H) is presented. The revised protocol for the synthesis and purification of the ligand minimizes the need for specialized laboratory equipment while simplifying reaction workups and product purification. Use of Cp*H in the synthesis of [Cp*MCl2]2 complexes (M = Ru, Ir) is also described.
09:44
Small-Scale Plasma Membrane Preparation for the Analysis of Candida albicans Cdr1-mGFPHis
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Cited by 14 •
2021
This article presents a small-scale plasma membrane isolation protocol for the characterization of Candida albicans ABC (ATP-binding cassette) protein Cdr1, overexpressed in Saccharomyces cerevisiae. A protease-cleavable C-terminal mGFPHis double tag with a 16-residue linker between Cdr1 and the tag was designed to facilitate the purification and detergent-screening of Cdr1.
FAQs
Precise pipetting helps keep microscale reactions consistent when only limited sample or reagent is available. At these volumes, accurately transferring each portion supports controlled processing and reduces avoidable variation caused by using too much or too little material. This consistency is especially useful when comparing analytical results or refining an experimental protocol before broader use.
Each selective step serves a different preparation need. Homogenization, centrifugation, filtration, or extraction can help separate the material of interest from other components. Choosing among these steps depends on the intended analysis, because the preparation must isolate or concentrate the material needed for downstream biological measurements.
Working at small scale changes the balance between sample conservation and processing capacity. Microscale preparation minimizes reagent consumption and sample loss, which is valuable when biological material is scarce. It can also support higher experimental throughput and preliminary optimization, although the resulting protocol may later need application to larger or more complex biological systems.
A workflow begins with handling a limited quantity of biological sample, cells, or reagents using precise pipetting. When appropriate, researchers combine homogenization, centrifugation, filtration, or extraction to prepare the target material. The resulting preparation can then be isolated or concentrated for analysis, while the sequence is adjusted during preliminary method development.
The process relies on biological samples, cells, or reagents in microscale volumes, together with accurate pipetting. Depending on the analytical goal, the workflow may also require a way to homogenize, centrifuge, filter, or extract the material. These components support isolation or concentration while conserving scarce samples and limiting reagent use.
Biologists can apply it to nucleic acid and protein analysis, enzyme assays, and preliminary method development. The approach is especially relevant when sample availability is limited or when many conditions must be examined efficiently. By conserving reagents and supporting protocol optimization, it helps generate early analytical results before a method is used with larger or more complex biological systems.