Merck
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T3924

Sigma-Aldrich

Trypsin-EDTA solution

1 ×, sterile; sterile-filtered, BioReagent, suitable for cell culture, 0.5 g porcine trypsin and 0.2 g EDTA, 4Na per liter of Hanks′ Balanced Salt Solution with phenol red

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Synonym(s):
Cell dissociation enzyme
Enzyme Commission number:
MDL number:

biological source

Porcine

Quality Level

sterility

sterile; sterile-filtered

product line

BioReagent

form

solution

mol wt

23.4 kDa

concentration

1 ×

technique(s)

cell culture | mammalian: suitable
single cell analysis: suitable

impurities

Porcine parvovirus, none detected (9 CFR)

pH

7.0-9.0

shipped in

dry ice

storage temp.

−20°C

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Sigma-Aldrich

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T3924

Trypsin-EDTA solution

Sigma-Aldrich

Sigma-Aldrich

T4049

Trypsin-EDTA solution

Sigma-Aldrich

Sigma-Aldrich

T4174

Trypsin-EDTA solution

Sigma-Aldrich

Sigma-Aldrich

T4299

Trypsin-EDTA solution

sterility

sterile; sterile-filtered

sterility

sterile-filtered

sterility

sterile-filtered

sterility

sterile-filtered

form

solution

form

solution

form

solution

form

solution

mol wt

23.4 kDa

mol wt

23.4 kDa

mol wt

23.4 kDa

mol wt

-

concentration

1 ×

concentration

0.25%

concentration

10 ×

concentration

1 ×

technique(s)

cell culture | mammalian: suitable, single cell analysis: suitable

technique(s)

cell culture | mammalian: suitable, single cell analysis: suitable

technique(s)

cell culture | mammalian: suitable

technique(s)

cell culture | mammalian: suitable

Application

The typical use for this product is in removing adherent cells from a culture surface. The concentration of trypsin necessary to dislodge cells from their substrate is dependent primarily on the cell type and the age of the culture.

Suitable for use in preparation of single cell suspension for sequencing.

Biochem/physiol Actions

Trypsin cleaves peptides on the C-terminal side of lysine and arginine residues. The rate of hydrolysis of this reaction is slowed if an acidic residue is on either side of the cleavage site and hydrolysis is stopped if a proline residue is on the carboxyl side of the cleavage site. The optimal pH for trypsin activity is 7-9. Trypsin can also act to cleave ester and amide linkages of synthetic derivatives of amino acids. EDTA is added to trypsin solutions as a chelating agent that neutralizes calcium and magnesium ions that obscure the peptide bonds on which trypsin acts. Removing these ions increases the enzymatic activity.

Serine protease inhibitors, including DFP, TLCK, APMSF, AEBSEF, and aprotinin, amongst others, will inhibit Trypsin.

Components

Trypsin consists of a single chain polypeptide of 223 amino acid residues, produced by the removal of the N-terminal hexapeptide from trypsinogen which is cleaved at the Lys - lle peptide bond. The sequence of amino acids is cross-linked by 6 disulfide bridges. This is the native form of trypsin, beta-trypsin. BETA-trypsin can be autolyzed, cleaving at the Lys - Ser residue, to produce alpha-trypsin. Trypsin is a member of the serine protease family.

Caution

This product is stored frozen between -10 and -40°C. Repeated cycles of freezing and thawing should be avoided.

Preparation Note

This product does contain phenol red. Due to shipment on dry ice, there could be significant carbon dioxide buildup in the package. This CO2 may enter the solution and lower the pH slightly, giving an orange rather than pinkish color. The orange solution will still be suitable for use, or the pH can be adjusted with sodium hydroxide. Incubating cells with too high a trypsin concentration for a long period can damage cell membranes and kill the cells. Solubilizing trypsin or diluting it from a concentrated solution should be done with a buffered salt solution containing no Ca2+ or Mg2+.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Protocols

Human Astrocytes (HA) Culture Protocol

Store the cryovials in a liquid nitrogen storage tank immediately upon arrival.

Rat Dermal Fibroblasts (RDF) Culture Protocol

Store the cryovials in a liquid nitrogen storage tank immediately upon arrival.

Bovine Aortic Endothelial Cells (BAOEC) Culture Protocol

Technical information for working with bovine aortic endothelial cells including thawing, subculturing and cryopreservation.

Bovine Aortic Endothelial Cells (BAOEC) Culture Protocol

Technical information for working with bovine aortic endothelial cells including thawing, subculturing and cryopreservation.

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