Thermo Scientific™

Mass Spectrometry Grade Proteases

Catalog number: 84841
Thermo Scientific™

Mass Spectrometry Grade Proteases

Catalog number: 84841
Protein characterization, identification, and quantification by MS begins with efficient, reproducible protein digestion. Sequence specific proteases are utilized to cleave proteins into smaller fragments or peptides. Trypsin is the protease of choice for protein digestion. However, separate or sequential digestion with alternative proteases can improve individual protein sequence coverage, or generate unique peptide sequences for different MS applications.
 
Catalog Number
84841
Unit Size
10 µg
Description
Digestion Indicator for Mass Spectrometry
Quantity
10 μg
Price (USD)
Price: 221.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionDigestion Indicator for Mass Spectrometry
For Use With (Equipment)Mass Spectrometer
Product TypeDigestion Indicator
Product LinePierce™
Shipping ConditionDry Ice
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatLiquid
Workflow StepProtein Digestion
Quantity10 μg
Unit Size10 µg
Catalog Number
Unit Size
2 µg
Description
Asp-N Endoproteinase, MS Grade
Quantity
2 μg
Price (USD)
Price: 284.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionAsp-N Endoproteinase, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity2 μg
Unit Size2 µg
Catalog Number
Unit Size
4 x 25 µg
Description
Chymotrypsin Endoproteinase, MS Grade (TLCK-treated)
Quantity
4 x 25 μg
Price (USD)
Price: 272.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionChymotrypsin Endoproteinase, MS Grade (TLCK-treated)
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity4 x 25 μg
Unit Size4 x 25 µg
Catalog Number
Unit Size
5 x 10 µg
Description
Glu-C Endoproteinase, MS Grade
Quantity
5 x 10 μg
Price (USD)
Price: 264.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionGlu-C Endoproteinase, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity5 x 10 μg
Unit Size5 x 10 µg
Catalog Number
Unit Size
1 x 100 µg
Description
Trypsin Protease, MS Grade (Frozen)
Quantity
1 x 100 μg
Price (USD)
Price: 64.75
Your Price:
Availability
-
Full specifications
Quantity
DescriptionTrypsin Protease, MS Grade (Frozen)
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin Protease
Product LinePierce™
Shipping ConditionProducts are shipped with ice.
Starting MaterialProtein Samples, Cell Lysate
Final Product TypeProtease (Enzyme)
Detection MethodMass Spectrometry
FormatLiquid
Workflow StepProtein Digestion
Quantity1 x 100 μg
Unit Size1 x 100 µg
Catalog Number
Unit Size
1 mg
Description
Trypsin Protease, MS Grade
Quantity
1 mg
Price (USD)
Price: 660.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionTrypsin Protease, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin Protease
Product LinePierce™
Shipping ConditionProducts are shipped with ice.
Starting MaterialProtein Samples, Cell Lysate
Final Product TypeEnzyme
Detection MethodMass Spectrometry
FormatPowder
Workflow StepProtein Digestion
Quantity1 mg
Unit Size1 mg
Catalog Number
Unit Size
20 µg
Description
Trypsin/Lys-C Protease Mix, MS Grade
Quantity
20 μg
Price (USD)
Price: 65.50
Your Price:
Availability
-
Full specifications
Quantity
DescriptionTrypsin/Lys-C Protease Mix, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin/Lys-C Protease Mix
Product LinePierce™
Shipping ConditionWet Ice
Starting MaterialProtein Samples
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatSolid
Workflow StepProtein Digestion
Quantity20 μg
Unit Size20 µg
Catalog Number
Unit Size
5 x 20 µg
Description
Trypsin/Lys-C Protease Mix, MS Grade
Quantity
5 x 20 μg
Price (USD)
Price: 183.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionTrypsin/Lys-C Protease Mix, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin/Lys-C Protease Mix
Product LinePierce™
Shipping ConditionWet Ice
Starting MaterialProtein Samples
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatSolid
Workflow StepProtein Digestion
Quantity5 x 20 μg
Unit Size5 x 20 µg
Catalog Number
Unit Size
100 µg
Description
Trypsin/Lys-C Protease Mix, MS Grade
Quantity
100 μg
Price (USD)
Price: 168.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionTrypsin/Lys-C Protease Mix, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin/Lys-C Protease Mix
Product LinePierce™
Shipping ConditionWet Ice
Starting MaterialProtein Samples
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatSolid
Workflow StepProtein Digestion
Quantity100 μg
Unit Size100 µg
Catalog Number
Unit Size
20 µg
Description
Lys-C Endoproteinase, MS Grade
Quantity
1 x 20 μg
Price (USD)
Price: 349.00
Your Price:
Availability
-
Full specifications
Quantity
DescriptionLys-C Endoproteinase, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity1 x 20 μg
Unit Size20 µg
Showing 10 of 13Show more
Catalog NumberSpecificationsUnit SizeDescriptionQuantityPrice (USD)AvailabilityQuantity
84841Full specifications
10 µgDigestion Indicator for Mass Spectrometry10 μg
Price: 221.00
Your Price:
-
DescriptionDigestion Indicator for Mass Spectrometry
For Use With (Equipment)Mass Spectrometer
Product TypeDigestion Indicator
Product LinePierce™
Shipping ConditionDry Ice
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatLiquid
Workflow StepProtein Digestion
Quantity10 μg
Unit Size10 µg
90053Full specifications
2 µgAsp-N Endoproteinase, MS Grade2 μg
Price: 284.00
Your Price:
-
DescriptionAsp-N Endoproteinase, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity2 μg
Unit Size2 µg
90056Full specifications
4 x 25 µgChymotrypsin Endoproteinase, MS Grade (TLCK-treated)4 x 25 μg
Price: 272.00
Your Price:
-
DescriptionChymotrypsin Endoproteinase, MS Grade (TLCK-treated)
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity4 x 25 μg
Unit Size4 x 25 µg
90054Full specifications
5 x 10 µgGlu-C Endoproteinase, MS Grade5 x 10 μg
Price: 264.00
Your Price:
-
DescriptionGlu-C Endoproteinase, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity5 x 10 μg
Unit Size5 x 10 µg
90305Full specifications
1 x 100 µgTrypsin Protease, MS Grade (Frozen)1 x 100 μg
Price: 64.75
Your Price:
-
DescriptionTrypsin Protease, MS Grade (Frozen)
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin Protease
Product LinePierce™
Shipping ConditionProducts are shipped with ice.
Starting MaterialProtein Samples, Cell Lysate
Final Product TypeProtease (Enzyme)
Detection MethodMass Spectrometry
FormatLiquid
Workflow StepProtein Digestion
Quantity1 x 100 μg
Unit Size1 x 100 µg
90059Full specifications
1 mgTrypsin Protease, MS Grade1 mg
Price: 660.00
Your Price:
-
DescriptionTrypsin Protease, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin Protease
Product LinePierce™
Shipping ConditionProducts are shipped with ice.
Starting MaterialProtein Samples, Cell Lysate
Final Product TypeEnzyme
Detection MethodMass Spectrometry
FormatPowder
Workflow StepProtein Digestion
Quantity1 mg
Unit Size1 mg
A40007Full specifications
20 µgTrypsin/Lys-C Protease Mix, MS Grade20 μg
Price: 65.50
Your Price:
-
DescriptionTrypsin/Lys-C Protease Mix, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin/Lys-C Protease Mix
Product LinePierce™
Shipping ConditionWet Ice
Starting MaterialProtein Samples
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatSolid
Workflow StepProtein Digestion
Quantity20 μg
Unit Size20 µg
A41007Full specifications
5 x 20 µgTrypsin/Lys-C Protease Mix, MS Grade5 x 20 μg
Price: 183.00
Your Price:
-
DescriptionTrypsin/Lys-C Protease Mix, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin/Lys-C Protease Mix
Product LinePierce™
Shipping ConditionWet Ice
Starting MaterialProtein Samples
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatSolid
Workflow StepProtein Digestion
Quantity5 x 20 μg
Unit Size5 x 20 µg
A40009Full specifications
100 µgTrypsin/Lys-C Protease Mix, MS Grade100 μg
Price: 168.00
Your Price:
-
DescriptionTrypsin/Lys-C Protease Mix, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeTrypsin/Lys-C Protease Mix
Product LinePierce™
Shipping ConditionWet Ice
Starting MaterialProtein Samples
Final Product TypePeptides
Detection MethodMass Spectrometry
FormatSolid
Workflow StepProtein Digestion
Quantity100 μg
Unit Size100 µg
90051Full specifications
20 µgLys-C Endoproteinase, MS Grade1 x 20 μg
Price: 349.00
Your Price:
-
DescriptionLys-C Endoproteinase, MS Grade
For Use With (Equipment)Mass Spectrometer
Product TypeProtease
Product LinePierce™
Starting MaterialProtein Samples, Cell Lysate
Final Product TypePeptide
Detection MethodMass Spectrometry
Workflow StepProtein Digestion
Quantity1 x 20 μg
Unit Size20 µg
Showing 10 of 13Show more
Exceptional selectivity—trypsin has >95% C-terminal lysine and arginine specificity; LysC has >90% C-terminal lysine cleavage specificity
High purity—no detectable chymotrypsin activity (trypsin)
Complete digestion—trypsin/LysC enzyme combination reduces tryptic missed cleavages
Enhanced stability—trypsin chemically modified for reduced autolytic activity
Convenient—enzymes provided in stable lyophilized or liquid formats

Trypsin Protease is a mass spectrometry (MS)-grade serine protease derived from porcine pancreatic extracts that specifically cleaves at the carboxyl side of lysine and arginine residues. The enzyme is TPCK-treated to eliminate chymotryptic activity and chemically modified by methylation, yielding a highly active and more stable form of the enzyme. Trypsin Protease can tolerate commonly used partially denaturing conditions, such as 0.1% SDS, 1 M urea, and 10% acetonitrile. Trypsin Protease is most active at pH 7 to 9 and can be reversibly inactivated at pH < 4. Trypsin can be purchased lyophilized in 1-mg 5-packs of 20 µg or 100 µg quantities and in solution at 100 µg.

Lys-C Protease is a mass spectrometry (MS)-grade serine protease isolated from Lysobacter enzymogenes. Lys-C Protease has high activity and specificity for lysine residues, resulting in larger peptides and less sample complexity than trypsin (i.e., fewer peptides). Unlike trypsin, Lys-C Protease can cleave lysines followed by prolines, making it ideal for sequential protein digestion followed by trypsin to decrease missed cleavages. These unique Lys-C Protease properties ensure high digestion efficiency when used alone or followed by tryptic digestion. Additionally, Lys-C prototypic peptides typically have higher charge states, making it an enzyme of choice for use with ETD fragmentation.

Lys-C Protease is commonly used in phosphopeptide enrichment workflows because it generates peptides with primary amines at both the N- and C-terminus, allowing the fragments to be double-labeled with amine-reactive isobaric tags. This results in enhanced peptide ionization and improved limits of quantitation since more fragment ions can be re-isolated during MS3 acquisition. This enzyme can be used for in-solution or in-gel digestion workflows to produce peptides for LC-MS/MS protein identification.

Efficient protein digestion can be completed in two hours at 37°C. Lys-C Protease remains active in highly denaturing conditions, such as 8 M urea, 2 M guanidine-HCl, 1% SDS, 2% CHAPS, and 40% acetonitrile, and functions well at pH 7–9 (maximal activity at pH 8). This lyophilized enzyme has a mass of 30 kDa and is stable for one year when stored at –20°C. This Lys-C enzyme is packaged lyophilized (20 µg or 100 µg quantities).

Trypsin/Lys-C Protease Mix is a lyophilized mixture of trypsin and LysC proteases that has been optimized to improve digestion efficiency of proteins. Although trypsin is routinely used for protein digestion, this protease alone is not sufficient to fully digest proteins at the carboxyl-end of lysine and arginine residues. Therefore, Lys-C protease is commonly combined with trypsin to sequentially digest proteins with fewer missed cleavages. Trypsin/Lys-C Protease Mix is provided in flexible formats of 20 µg, 5 x 20 µg, or 100 µg. Digestion can be completed in as little as 1.5–3 hours or up to overnight, depending on enzyme to protein ratio.

Chymotrypsin, GluC, Asp-N Proteases

• Increased sequence coverage—better protein characterization results from overlapping peptides with complementary chromatographic, ionization, and fragmentation properties
• High specific activity—each protease has excellent enzymatic specificity
• Stable—provided in a lyophilized format

Asp-N Protease is an MS-grade zinc metalloproteinase derived from a mutant strain of Pseudomonas fragi and requires a trace amount of zinc for activity. Asp-N Protease cleaves primarily at the amino side of aspartate and cysteic acid that results from cysteine oxidation. Cleavage can also occur at glutamic acid; however, the rate of cleavage at the glutamyl residue is significantly lower than the rate of cleavage at the aspartic acid residue. Asp-N Protease can efficiently digest protein in 2–20 hours at 37°C with activity greater than 20,000 units/mg protein and remains active under denaturing conditions, such as 1 M urea, 2 M guanidine·HCl, 0.1% SDS, 2% CHAPS, and 10% acetonitrile, with optimal activity at pH 6–8. This lyophilized enzyme has a mass of 27 kDa and is stable for one year when stored at -20°C.

Glu-C Protease, also referred to as V-8 protease, is an MS-grade serine protease isolated from Staphylococcus aureus. Glu-C Protease specifically cleaves the carboxyl side of glutamic acid residues in ammonium bicarbonate and ammonium acetate buffers, generating a limited number of peptide fragments. Cleavage can also occur at both glutamic and aspartic acid residues in phosphate buffers. Glu-C Protease can efficiently digest protein in 5–18 hours at 37°C with activity greater than 500 units/mg protein and remains active under denaturing conditions, such as 2 M urea, 1 M guanidine·HCl, 0.1% SDS, 2% CHAPS, and 20% acetonitrile. Glu-C Protease activity is optimal at pH 8. This lyophilized enzyme has a mass of 27 kDa and is stable for one year when stored at -20°C.

Chymotrypsin Protease is an MS-grade endoproteinase isolated from bovine pancreas that specifically cleaves at the carboxyl side of tyrosine, phenylalanine, tryptophan, and leucine. Two predominant forms of chymotrypsin protease, A and B, are found in equal amounts in bovine pancreas. They are similar proteins (80% homology) but have different proteolytic characteristics. Both forms of chymotrypsin protease are present in Thermo Scientific Chymotrypsin Protease. Since trypsin may co-purify with chymotrypsin protease derived from natural sources, Chymotrypsin Protease has been treated with TLCK to eliminate potential tryptic activity, improving digestion specificity. Chymotrypsin Protease can tolerate mild denaturing conditions, such as 0.1% SDS, 2 M urea, 2 M guanidine·HCl, 1% CHAPS, and 30% acetonitrile, with optimal activity at pH 7.5–8.5. This lyophilized enzyme has a mass of 25 kDa and is stable for one year when stored at -20°C.

For Research Use Only. Not for use in diagnostic procedures.

Contents & Storage

Store at -20°C.