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38733

Sigma-Aldrich

Laemmli Lysis-buffer

non smelling

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About This Item

UNSPSC Code:
12161700
NACRES:
NA.25
Pricing and availability is not currently available.

form

liquid

composition

bromophenol blue, 0.004%
DTT, 400 mM
glycerol, 20%
SDS, 4%
TRIS, 0.125 M

pH

~6.8

suitability

in accordance for electrophoresis test

storage temp.

−20°C

Application

Laemmli Lysis-buffer is an non-smelling lysis buffer used to prepare protein samples for SDS gel electrophoresis.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H315,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCF6315
BCBS0040V
BCBQ4821V
BCBM0474V
BCBJ1244V

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Vincent Archambault et al.
Genes & development, 22(19), 2707-2720 (2008-10-04)
The conserved Polo kinase controls multiple events in mitosis and cytokinesis. Although Polo-like kinases are regulated by phosphorylation and proteolysis, control of subcellular localization plays a major role in coordinating their mitotic functions. This is achieved largely by the Polo-Box
Xiaoqiang Wu et al.
Analytical biochemistry, 421(1), 347-349 (2011-11-01)
A modified Laemmli sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) protocol is described. The new method saves 30 min for gel casting without loss of the resolution power of Laemmli gel. In this method, both the upper and lower gels can
Sean R Gallagher
Current protocols in protein science, Chapter 10, Unit 10-Unit 10 (2012-04-04)
One-dimensional gel electrophoresis of proteins provides information about the molecular size, amount, and purity of a protein sample. Separated proteins can be recovered from polyacrylamide gels for subsequent characterization by a variety of secondary techniques, such as mass spectrometry to
Sean R Gallagher
Current protocols in immunology, Chapter 8, Unit 8-Unit 8 (2008-04-25)
Electrophoresis is used to separate complex mixtures of proteins (e.g., from cells, subcellular fractions, column fractions, or immunoprecipitates), to investigate subunit compositions, and to verify homogeneity of protein samples. It can also serve to purify proteins for use in further
Lisha Mou et al.
PloS one, 10(7), e0133997-e0133997 (2015-07-25)
Secretory azoospermia is a severe form of male infertility caused by unknown factors. DAX-1 is predominantly expressed in mammalian reproductive tissues and plays an important role in spermatogenesis because Dax-1 knockout male mice show spermatogenesis defects. To examine whether DAX-1
View All Related Papers

Questions

1–7 of 7 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. What is the difference between the two Laemmli buffers S3401 and 38733?

    1 answer

    1. Product No. S3401 is 0.125 M Tris (pH 6.8) in 80% water/20% glycerol, with 4% SDS, 10% 2-mercaptoethanol and 0.004% bromophenol blue. 38733 is 0.125 M Tris in 80% water/20% glycerol, with 4% SDS, 400 mM DTT and 0.004% bromophenol blue.  So the only difference is the reducing agent; 2-mercaptoethanol (strong odor) vs. the DTT (not nearly as strong an odor).

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  4. Why do the Laemmli sample buffers like S3401 and 38733 have glycerol in them?

    1 answer

    1. An aqueous buffer with 20% glycerol is denser than one without. So when the sample is added to the well of an electrophoresis gel, it tends to stay in the well.

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  5. What is the advantage of using Laemmli Lysis-buffer, Product No. 38733?

    1 answer

    1. The odor of 38733 is not nearly as strong as that of S3401 (which has 2-mercaptoethanol).  Some people are very sensitive to the odor of 2-mercaptoethanol.

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  6. Is Laemmli Lysis-buffer, Product No. 38733, a 1× or a 2× solution?

    1 answer

    1. For most applications, it is considered to be a 2X solution.

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  7. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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