Protein Expression & Purification

Proteins are fundamental macromolecules found in every biological system and form the basis of many fields of work from research into drug creation to industrial applications like fermentation. GoldBio protein products are ideal for every step of your protein synthesis. Our reagents and tools are of the highest quality available at a fraction of the prices of other vendors, so you can be assured that your research yields confident results without compromising your budget.
Showing 41-60 of 122 items.

DAB Tetrahydrochloride Hydrate

Catalog ID Size Pricing
D-320-1 1 g $ 44.00
D-320-5 5 g $ 72.00
D-320-10 10 g $ 137.00
D-320-25 25 g $ 317.00

Description

No description available

Product Specifications

Catalog ID D-320
CAS # 868272-85-9
MW 360.11 g/mol
Grade REAGENT GRADE
Storage/Handling Store at -20°C.
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D-320-1 1 g $ 44.00
D-320-5 5 g $ 72.00
D-320-10 10 g $ 137.00
D-320-25 25 g $ 317.00

Deoxycholic Acid Sodium Salt

Catalog ID Size Pricing
D-070-25 25 g $ 25.00
D-070-100 100 g $ 65.00
D-070-500 500 g $ 270.00

Description

No description available

Product Specifications

Catalog ID D-070
CAS # 302-95-4
MW 414.55 g/mol
Storage/Handling Store desiccated at room temperature.
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D-070-25 25 g $ 25.00
D-070-100 100 g $ 65.00
D-070-500 500 g $ 270.00

Dexamethasone

Catalog ID Size Pricing
D-940-5 5 g $ 58.00
D-940-10 10 g $ 94.00
D-940-25 25 g $ 197.00
D-940-50 50 g $ 326.00

Description

No description available

Product Specifications

Catalog ID D-940
CAS # 50-02-2
MW 392.46 g/mol
Storage/Handling Store at 4°C. Protect from light.
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D-940-5 5 g $ 58.00
D-940-10 10 g $ 94.00
D-940-25 25 g $ 197.00
D-940-50 50 g $ 326.00

Digitonin Special Grade (water soluble)

Catalog ID Size Pricing
D-180-250 250 mg $ 98.00
D-180-1 1 g $ 243.00
D-180-2.5 2.5 g $ 508.00
D-180-5 5 g $ 939.00
D-180-10 10 g $ 1,734.00

Description

Product Specifications

Catalog ID D-180
CAS # 11024-24-1
MW 1229.31 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at -20°C.
UN Number 2811
Item Class 6.1
Group Number II
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D-180-250 250 mg $ 98.00
D-180-1 1 g $ 243.00
D-180-2.5 2.5 g $ 508.00
D-180-5 5 g $ 939.00
D-180-10 10 g $ 1,734.00

DNase I, Bovine Pancreas (Lysate Tested), >300 Kunitz U/mg

There is no image for DNase I, Bovine Pancreas (Lysate Tested), >300 Kunitz U/mg DNase I, Bovine Pancreas (Lysate Tested), >300 Kunitz U/mg
Catalog ID Size Pricing
D-303-100 100 mg $ 30.00
D-303-500 500 mg $ 89.00
D-303-1 1 g $ 161.00
D-303-5 5 g $ 657.00

Description

No description available

Product Specifications

Name DNase I
CAS # 9003-98-9
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at -20°C.
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D-303-100 100 mg $ 30.00
D-303-500 500 mg $ 89.00
D-303-1 1 g $ 161.00
D-303-5 5 g $ 657.00

DNase I, Bovine Pancreas (Lysate Tested), >500 Kunitz U/mg

There is no image for DNase I, Bovine Pancreas (Lysate Tested), >500 Kunitz U/mg DNase I, Bovine Pancreas (Lysate Tested), >500 Kunitz U/mg
Catalog ID Size Pricing
D-300-100 100 mg $ 37.00
D-300-500 500 mg $ 111.00
D-300-1 1 g $ 201.00
D-300-5 5 g $ 822.00

Description

DNase I (Deoxyribonuclease I) is a dialyzed lyophilized powder from bovine pancreas that has been purified by chromatography.

Bovine pancreatic deoxyribonuclease (DNase) is an endonuclease which splits phosphodiester linkages, preferentially adjacent to a pyrimidine nucleotide yielding polynucleotides with a free hydroxyl group at the 3' position and phosphate group at the 5' position. The optimum pH is 7.8.

DNase I is activated by bivalent metals, and inhibited by chelating agents such as EDTA and SDS. DNase I can be stabilized against proteolytic digestion by 5 mM Ca2+.

Product Specifications

Catalog ID D-300
CAS # 9003-98-9
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at -20°C.
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D-300-100 100 mg $ 37.00
D-300-500 500 mg $ 111.00
D-300-1 1 g $ 201.00
D-300-5 5 g $ 822.00

DTT (Dithiothreitol) (> 99% pure) Protease free

Catalog ID Size Pricing
DTT10 10 g $ 49.00
DTT25 25 g $ 109.00
DTT50 50 g $ 198.00
DTT100 100 g $ 319.00
DTT500 500 g $ 1,425.00

Description

Dithiothreitol (DTT) is the common name of the more popular of the two Cleland’s Reagents (the other being Dithioerythritol or DTE). DTT is a powerful reducing agent that forms a stable six-membered ring with an internal disulfide bond which is resistant to oxidation. DTT is often used for the following: reducing the disulfide bridge of the cross-linker N,N′-bis(acryloyl) cystamine to break apart the matrix of a polyacrylamide gel, the reduction of disulfide bonds in proteins, the prevention of those bonds from forming between cysteine residues and lastly, DTT is often used to reduce thiolated DNA in order to minimize dimerization.

DTT is a nearly 7-fold stronger reduction agent than βME (β-mercaptoethanol) and has a less offensive odor and is less toxic.

Product Specifications

Catalog ID DTT
CAS # 27565-41-9 / 3483-12-3
MW 154.25 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at -20°C.
UN Number 3335
Item Class 9
Group Number III
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DTT10 10 g $ 49.00
DTT25 25 g $ 109.00
DTT50 50 g $ 198.00
DTT100 100 g $ 319.00
DTT500 500 g $ 1,425.00

E-64

Catalog ID Size Pricing
E-064-25 25 mg $ 121.00
E-064-100 100 mg $ 286.00

Description

No description available

Product Specifications

Catalog ID E-064
CAS # 66701-25-5
MW 357.41 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at -20°C.
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E-064-25 25 mg $ 121.00
E-064-100 100 mg $ 286.00

Elastase, Porcine Pancreas

There is no image for Elastase, Porcine Pancreas Elastase, Porcine Pancreas
Catalog ID Size Pricing
E-240-100 100 mg $ 45.00
E-240-500 500 mg $ 75.00
E-240-1 1 g $ 135.00
E-240-5 5 g $ 360.00

Description

No description available

Product Specifications

Catalog ID E-240
CAS # 39445-21-1
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at -20°C.
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E-240-100 100 mg $ 45.00
E-240-500 500 mg $ 75.00
E-240-1 1 g $ 135.00
E-240-5 5 g $ 360.00

G-418 Sulfate

Catalog ID Size Pricing
G-418-1 1 g $ 30.00
G-418-5 5 g $ 137.00
G-418-10 10 g $ 229.00
G-418-25 25 g $ 338.00

Description

G-418 sulfate, also known as geneticin, is an aminoglycoside antibiotic similar in structure to gentamicin B1. It is commonly used in plant and mammalian cell culture as a selectable marker. It can be used to select for cells transformed with an iNOS promoter construct or neomycin resistance gene.

G-418 functions by causing a chain of nonsense mutations during translation, ultimately resulting in inhibition of polypeptide synthesis and protein elongation. Resistance to G-418 is conferred through the nptll gene in plant cells and the neo gene in mammalian cells, which encode aminoglycoside 3'-phosphotransferase. For gene selection applications, a kill curve can be made to determine the minimum effective G418 concentration to kill non-resistant cells. G418 disulfate is freely soluble in water.

Product Specifications

Catalog ID G-418
CAS # 108321-42-2
MW 692.71 g/mol
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G-418-1 1 g $ 30.00
G-418-5 5 g $ 137.00
G-418-10 10 g $ 229.00
G-418-25 25 g $ 338.00

Gentamicin Sulfate, USP Grade

Catalog ID Size Pricing
G-400-1 1 g $ 23.00
G-400-5 5 g $ 34.00
G-400-10 10 g $ 58.00
G-400-25 25 g $ 88.00
G-400-100 100 g $ 282.00

Description

Gentamicin is an aminoglycoside, broad-spectrum antibiotic that effectively inhibits Gram-negative and Gram-positive cell growth.  Gentamicin's mode of action is to bind to the 30S ribosomal subunit and interfere with protein synthesis.

It is commonly used in clinical in vitro microbiological antimicrobial susceptibility tests (panels, discs, and MIC strips) against gram-positive and gram-negative microbial isolates. Medical microbiologists use AST results to recommend antibiotic treatment options for infected patients.

Product Specifications

Catalog ID G-400
CAS # 1405-41-0
MW 575.67 g/mol
Storage/Handling Store desiccated at -20°C.
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G-400-1 1 g $ 23.00
G-400-5 5 g $ 34.00
G-400-10 10 g $ 58.00
G-400-25 25 g $ 88.00
G-400-100 100 g $ 282.00

Glutathione Agarose Resin

Catalog ID Size Pricing
G-250-5 5 mL $ 84.00
G-250-10 10 mL $ 158.00
G-250-50 50 mL $ 610.00
G-250-100 100 mL $ 953.00

Description

Glutathione has been covalently linked for use in affinity purification of glutathione-S-transferase (GST) and GST fusion proteins.

Product Specifications

Catalog ID G-250
Storage/Handling store at 4°C. Do NOT freeze.
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G-250-5 5 mL $ 84.00
G-250-10 10 mL $ 158.00
G-250-50 50 mL $ 610.00
G-250-100 100 mL $ 953.00

Glycochenodeoxycholic acid

Catalog ID Size Pricing
G-540-25 25 g $ 293.00
G-540-50 50 g $ 526.00
G-540-100 100 g $ 943.00
G-540-250 250 g $ 2,108.00

Description

No description available

Product Specifications

Catalog ID G-540
CAS # 640-79-9
MW 471.61 g/mol
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G-540-25 25 g $ 293.00
G-540-50 50 g $ 526.00
G-540-100 100 g $ 943.00
G-540-250 250 g $ 2,108.00

Glycochenodeoxycholic acid, sodium salt

Catalog ID Size Pricing
G-590-1 1 g $ 36.00
G-590-10 10 g $ 228.00
G-590-25 25 g $ 519.00
G-590-50 50 g $ 770.00

Description

No description available

Product Specifications

Catalog ID G-590
CAS # 16564-43-5
MW 471.61 g/mol
Storage/Handling Store at 4°C.
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G-590-1 1 g $ 36.00
G-590-10 10 g $ 228.00
G-590-25 25 g $ 519.00
G-590-50 50 g $ 770.00

Guanidine HCl

Catalog ID Size Pricing
G-211-50 50 g $ 23.00
G-211-100 100 g $ 28.00
G-211-500 500 g $ 45.00
G-211-1 1 kg $ 66.00
G-211-3 5 kg $ 159.00
G-211-5 5 kg $ 218.00

Description

No description available

Product Specifications

Catalog ID G-211
CAS # 50-01-1
MW 95.53 g/mol
Storage/Handling Store at room temperature.
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G-211-50 50 g $ 23.00
G-211-100 100 g $ 28.00
G-211-500 500 g $ 45.00
G-211-1 1 kg $ 66.00
G-211-3 5 kg $ 159.00
G-211-5 5 kg $ 218.00

Hexadecylpyridinium bromide

Catalog ID Size Pricing
H-615-100 4 x 25 g $ 63.00

Description

No description available

Product Specifications

Catalog ID H-615
CAS # 140-72-7
MW 384.44 g/mol
UN Number 2811
Item Class 6.1
Group Number II
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H-615-100 4 x 25 g $ 63.00

High Resolution Agarose (For Nucleotides < 1kb)

Catalog ID Size Pricing
A-202-100 100 g $ 254.00
A-202-500 500 g $ 1,207.00

Description

No description available

Product Specifications

Catalog ID A-202
CAS # 9012-36-6
Storage/Handling Store at room temperature.
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A-202-100 100 g $ 254.00
A-202-500 500 g $ 1,207.00

Hygromycin B

Catalog ID Size Pricing
H-270-1 1 g $ 68.00
H-270-2-1 2 x 1 g $ 127.00
H-270-2.5 2.5 g $ 161.00
H-270-5 5 g $ 281.00
H-270-5-1 5 x 1 g $ 305.00
H-270-10 10 g $ 506.00
H-270-10-1 10 x 1 g $ 518.00

Description

Hygromycin B is an aminoglycoside antibiotic isolated from Streptomyces hygroscopicus. It is commonly used to study protein synthesis. Aside from its efficacy against bacteria, fungi, and higher eukaryotic cells, hygromycin B is also an antiviral agent inhibiting translation upon selectively entering cells made permeable due to viral infection. It works as a standard selection antibiotic in gene experiments, especially for selection of hygromycin resistance gene transformed cells.

Product Specifications

Catalog ID H-270
CAS # 31282-04-9
MW 527.52 g/mol
Storage/Handling Store desiccated at -20°C.
UN Number 3462
Item Class 6.1
Group Number I
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H-270-1 1 g $ 68.00
H-270-2-1 2 x 1 g $ 127.00
H-270-2.5 2.5 g $ 161.00
H-270-5 5 g $ 281.00
H-270-5-1 5 x 1 g $ 305.00
H-270-10 10 g $ 506.00
H-270-10-1 10 x 1 g $ 518.00

Imidazole - 3M Recrystallized Solution, pH 6.0

Catalog ID Size Pricing
I-901-100 100 mL $ 156.00
I-901-25 25 mL $ 68.00
I-901-250 250 mL $ 361.00
I-901-50 50 mL $ 101.00

Description

No description available

Product Specifications

Catalog ID I-901
CAS # 288-32-4
MW 68.08 g/mol
Storage/Handling Store at 4°C.
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I-901-100 100 mL $ 156.00
I-901-25 25 mL $ 68.00
I-901-250 250 mL $ 361.00
I-901-50 50 mL $ 101.00

Imidazole, Recrystallized

Catalog ID Size Pricing
I-902-25 25 g $ 68.00
I-902-50 50 g $ 115.00
I-902-100 100 g $ 184.00
I-902-500 500 g $ 562.00

Description

Imidazole is a planar 5-membered ring. It is a highly polar, highly water soluble amphoteric compound. Imidazole is often used to elute tagged proteins bound to metal ions attached to the surface of beads in a chromatography column by displacing the His-tag from the metal ion and freeing the His-tagged proteins.

Product Specifications

Catalog ID I-902
CAS # 288-32-4
MW 68.08 g/mol
Storage/Handling Store at room temperature.
UN Number 3262
Item Class 8
Group Number III
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I-902-25 25 g $ 68.00
I-902-50 50 g $ 115.00
I-902-100 100 g $ 184.00
I-902-500 500 g $ 562.00

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