S3401
Sample Buffer, Laemmli 2× Concentrate
Synonym(s):
SDS Sample Buffer
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About This Item
UNSPSC Code:
41105323
NACRES:
NA.25
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Application
Sample Buffer, Laemmli 2× concentrate has been used as a sample buffer for denaturing and loading of protein samples in SDS-PAGE.
Biochem/physiol Actions
Laemmli sample buffer is especially formulated for protein sample preparation to be used in the Laemmli SDS-PAGE system. A protein sample is mixed with the 2X sample buffer (1:1) and heated in boiling water for 2-5 min. The 2-mercaptoethanol reduces the intra and inter-molecular disulfide bonds. The SDS detergent denatures the proteins and subunits and gives each an overall negative charge so that each will separate based on size. The bromophenol blue serves as a dye front that runs ahead of the proteins and also serves to make it easier to see the sample during loading. The glycerol increases the density of the sample so that it will layer in the sample well.
Other Notes
Solution contains 4% SDS, 20% glycerol, 10% 2-mercaptoethanol, 0.004% bromphenol blue and 0.125 M Tris HCl, pH approx. 6.8.
Quantity
Recommended usage: add 1 volume gel loading solution to 1 volume sample and mix well.
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Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Oral
Storage Class Code
6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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