内容: 感作剤250 mL 染色液25 mL 現像液250 mL 現像液エンハンサー2 mL 停止液250 mL デステイナーA 60 mL デステイナーB 60 mL
キットは室温(15~30℃)で保存してください。6ヵ月安定です。
よくあるご質問(FAQ)
How much protein is required for mass spectrometry analysis by MALDI-TOF?
In general, the required amount needed to identify a gel-separated protein by enzymatic digestion (usually Trypsin) is about 2 pmole (equivalent to approximately 0.12 µg). Our SilverQuest Silver staining kit is mass spectrometry compatible.
If you need to stop in the middle of the SilverQuest or SilverXpress silver staining procedure, at what point should this be done?
The sensitizing step is the optimal point to stop the procedure. The gel can be left overnight in the Sensitizing Solution. Although some other kits recommend leaving gels in the fix step, we have found that overnight fixation diminishes stain performances.
What is the sensitivity of Coomassie staining and silver staining?
Coomassie sensitivity: 50-500 ng protein per band
Silver-staining sensitivity: 1-5 ng protein per band
In general, silver staining is 10-100 times more sensitive than Coomassie staining.
I used the SilverQuest Silver Staining kit and I see negative staining (a dark halo enclosing a pale area). Can you please help me troubleshoot?
This is usually due to overloading of the protein sample. We recommend decreasing the protein load per band. For an unknown protein, a serial dilution may be necessary to determine the best amount to load for a particular protein.
I used the SilverQuest Silver Staining kit and it took a longer time for band development resulting in a dark background. What happened?
Here are possible causes and solutions:
- Low protein load. Increase the amount of protein load. Be sure to have at least 1-5 ng protein on the gel.
- Some proteins may need longer fixing time. Increase the time for fixing the gel to 2 hours or overnight.
The Wnt signaling inhibitor dickkopf-1 is required for reentry into the cell cycle of human adult stem cells from bone marrow.
Authors:Gregory CA, Singh H, Perry AS, Prockop DJ,
Journal:J Biol Chem
PubMed ID:12740383
'Adult human mesenchymal stem cells from bone marrow stroma (hMSCs) differentiate into numerous mesenchymal tissue lineages and are attractive candidates for cell and gene therapy. When early passage hMSCs are plated or replated at low density, the cultures display a lag phase of 3-5 days, a phase of rapid exponential ... More
Physical and functional interaction of the active zone proteins, CAST, RIM1, and Bassoon, in neurotransmitter release.
Authors:Takao-Rikitsu E, Mochida S, Inoue E, Deguchi-Tawarada M, Inoue M, Ohtsuka T, Takai Y,
Journal:J Cell Biol
PubMed ID:14734538
'We have recently isolated a novel cytomatrix at the active zone (CAZ)-associated protein, CAST, and found it directly binds another CAZ protein RIM1 and indirectly binds Munc13-1 through RIM1; RIM1 and Munc13-1 directly bind to each other and are implicated in priming of synaptic vesicles. Here, we show that all ... More
The R116C Mutation in alpha A-crystallin Diminishes Its Protective Ability against Stress-induced Lens Epithelial Cell Apoptosis.
Authors: Andley Usha P; Patel Harendra C; Xi Jing-Hua;
Journal:J Biol Chem
PubMed ID:11756414
'alphaA-crystallin is a small heat-shock protein expressed preferentially in the lens and is detected during the early stages of lens development. Recent work indicates that the expression of alphaA-crystallin enhances lens epithelial cell growth and resistance to stress conditions. Mutation of the arginine 116 residue to cysteine (R116C) in alphaA-crystallin ... More
The formation of highly soluble oligomers of alpha-synuclein is regulated by fatty acids and enhanced in Parkinson's disease.
Authors:Sharon R, Bar-Joseph I, Frosch MP, Walsh DM, Hamilton JA, Selkoe DJ,
Journal:Neuron
PubMed ID:12597857
Accumulation of misfolded proteins as insoluble aggregates occurs in several neurodegenerative diseases. In Parkinson's disease (PD) and dementia with Lewy bodies (DLB), alpha-synuclein (alpha S) accumulates in insoluble inclusions. To identify soluble alpha S oligomers that precede insoluble aggregates, we probed the cytosols of mesencephalic neuronal (MES) cells, normal and ... More
The semaphorin receptor plexin-B1 signals through a direct interaction with the Rho-specific nucleotide exchange factor, LARG.
Semaphorins are axon guidance molecules that signal through the plexin family of receptors. Semaphorins also play a role in other processes such as immune regulation and tumorigenesis. However, the molecular signaling mechanisms downstream of plexin receptors have not been elucidated. Semaphorin 4D is the ligand for the plexin-B1 receptor and ... More