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Shop By Category | Protein Expression & Purification

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.
Displaying 1-20 of 124 results.
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1 kb DNA Ladder
Catalog ID
Size
Pricing
More Info
1 kb DNA Ladder product image
D010-500
1x500 μl
$ 44.00
D010-1000
2x500 μl
$ 82.00
D010-1500
3x500 μl
$ 115.00
D010-2000
4x500 μl
$ 152.00
D010-2500
5x500 μl
$ 174.00
D010-3000
6x500 μl
$ 190.00
Description

A unique combination of a number of proprietary plasmids digested with appropriate restriction enzymes and PCR products to yield 13 fragments, suitable for use as molecular weight standards for agarose gel electrophoresis. The DNA includes fragments ranging from 250-10,000 base pairs. The 1K and 3K bands have increased intensity to serve as reference points. The approximate mass of DNA in each band is provided (0.5 μg a load) for approximating the mass of DNA in comparably intense samples. The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
1 kb PLUS™ DNA Ladder
Catalog ID
Size
Pricing
More Info
1 kb PLUS™ DNA Ladder product image
D011-500
1x500 μl
$ 55.00
D011-1000
2x500 μl
$ 103.00
D011-1500
3x500 μl
$ 147.00
D011-2000
4x500 μl
$ 185.00
D011-2500
5x500 μl
$ 217.00
D011-3000
6x500 μl
$ 239.00
Description

The 1 kb PLUS™ is composed of 14 individual DNA fragments: 25K, 10K, 8K, 6K, 5K, 4K, 3K, 2.5K, 2K, 1500, 1000, 750, 500, 250 base pairs. This product contains two enhanced bands (3K and 1K bp) for easy reference. The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
1,10-Phenanthroline monohydrate
Catalog ID
Size
Pricing
More Info
1,10-Phenanthroline monohydrate product image
P-980-10
10 g
$ 39.00
P-980-25
25 g
$ 70.00
P-980-50
50 g
$ 125.00
P-980-100
100 g
$ 225.00
P-980-250
250 g
$ 325.00
Description
Product Specifications1,10-Phenanthroline monohydrateFormula: C12H8N2 • H2O MW: 198.22 g/molStorage/Handling: Store desiccated at room temperature under inert gas. Product is hygroscopic. PubChem Chemical ID: 21226International shipments MUST be shipped by air (including Canada and Mexico). Shipments of 50 g, 100 g, and 250 g will be shipped as multiples of 25 g units to qualify for the small quantity exception. View product page →
Specifications
CAS Number 5144-89-8
Technical Resources
1,2-Dipalmitoyl-rac-glycero-3-phosphocholine
Catalog ID
Size
Pricing
More Info
1,2-Dipalmitoyl-rac-glycero-3-phosphocholine product image
D-226-500
0.5 g
$ 156.00
D-226-1
1 g
$ 291.00
D-226-2.5
2.5 g
$ 678.00
D-226-5
5 g
$ 1266.00
Description
1,2-Dipalmitoyl-rac-glycero-3-phosphocholine is a phospholipid with two palmitic acids and is the racemic mixture of Dipalmitoylphosphatidylcholine (also known as Colfosceril palmitate or DPPC). The phosphocholine head is sensitive to electric charges at the membrane surface when bound to pure phospholipids. When added to a solution containing charged ions, this sensitivity can shift the nitrogen cation away from a lack of positive charge or towards a positive charge in solution. In a research environment, it is useful in studying changes of biological membranes and liposomes. Because of its ability to form simple phospholipid bilayers, it is useful in computer modeling of bilayers View product page →
Specifications
CAS Number 2644-64-6
Technical Resources
1,2-Hexadecyliden-rac-glycero-3-phosphocholine
Catalog ID
Size
Pricing
More Info
1,2-Hexadecyliden-rac-glycero-3-phosphocholine product image
H-020-100
100 mg
$ 306.00
H-020-250
250 mg
$ 638.00
H-020-500
500 mg
$ 1063.00
H-020-1
1 g
$ 1771.00
Description
1,2-Hexadecyliden-rac-glycero-3-phosphocholine is classified as an ether and glycerolipid. This substance can be applied as a surfactant detergent for reduction of liquid surface tension. It contains a phosphocholine group which is used in selective attachment to proteins, including C-reactive proteins responsible for initiating the phagocytotic immunologic response. Product Specifications 1,2-Hexadecyliden-rac-glycero-3-phosphocholine 2-(N,N,N-Trimethyl)aminoethylphosphoric acid 2-heptadecyl-1,3,dioxalan-4-ylmethyl ester Formula: C24H50NO6P MW: 479.63 g/mol Storage/Handling: View product page →
Specifications
CAS Number 68124-68-5
Technical Resources

No resources are available for this product.

1,3-Dimyristoyl-2-O-benzylglycerol
Catalog ID
Size
Pricing
More Info
1,3-Dimyristoyl-2-O-benzylglycerol product image
D-535-1
1 g
$ 213.00
D-535-2.5
2.5 g
$ 484.00
D-535-5
5 g
$ 879.00
D-535-10
10 g
$ 1598.00
Description
1,3-Dimyristoyl-2-O-benzylglycerol is a carboxylic ester and glycerolipid containing a myristoyl group. Lipidation modification attaches the myristoyl group, which promotes weak interactions between proteins or proteins to lipids. This group is also useful in targeting membranes and signal transduction pathways. It functions as a detergent and reagent in chemical experimentation. Product Specifications 1,3-Dimyristoyl-2-O-benzylglycerol 2-(Benzyloxy)-1,3-propanediyl ditetradecanoate 1,3-Ditetradecanoyl-2-O-benzylglycerol Tetradecanoic acid, 2-(phenylmethoxy)-1,3-propanediyl ester Formula: C38H66O5 MW: 602.92 g/mol Storage/Handling: Store at room temperature. PubChem Chemical ID: 24802114 View product page →
Specifications
CAS Number 1135371-38-8
Technical Resources

No resources are available for this product.

100 bp DNA Ladder
Catalog ID
Size
Pricing
More Info
100 bp DNA Ladder product image
D001-500
1x500 μl
$ 44.00
D001-1000
2x500 μl
$ 82.00
D001-1500
3x500 μl
$ 115.00
D001-2000
4x500 μl
$ 152.00
D001-2500
5x500 μl
$ 174.00
D001-3000
6x500 μl
$ 190.00
Description

A unique combination of PCR products and a number of proprietary plasmids digested with appropriate restriction enzymes to yield 11 fragments, suitable for use as molecular weight standards for agarose gel electrophoresis. The DNA includes fragments ranging from 100-1,500 base pairs. The 500 and 1,500 base pair bands have increased intensity to serve as reference points. The approximate mass of DNA in each band is provided (0.5 μg a load) for approximating the mass of DNA in comparably intense samples of similar size. The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
100 bp PLUS™ DNA Ladder
Catalog ID
Size
Pricing
More Info
100 bp PLUS™ DNA Ladder product image
D003-500
1x500 μl
$ 44.00
D003-1000
2x500 μl
$ 82.00
D003-1500
3x500 μl
$ 120.00
D003-2000
4x500 μl
$ 152.00
D003-2500
5x500 μl
$ 174.00
D003-3000
6x500 μl
$ 190.00
Description

A unique combination of PCR products and a number of proprietary plasmids digested with appropriate restriction enzymes to yield 12 fragments, suitable for use as molecular weight standards for agarose gel electrophoresis. The DNA includes fragments ranging from 100-3,000 base pairs. The 500 and 1,500 base pair bands have increased intensity to serve as reference points. The approximate mass of DNA in each band is provided (0.5 μg a load) for approximating the mass of DNA in comparably intense samples of similar size.The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
4-Nitrophenyl phosphate, disodium salt hexahydrate
Catalog ID
Size
Pricing
More Info
4-Nitrophenyl phosphate, disodium salt hexahydrate product image
N-380-50
50 g
$ 82.00
N-380-100
100 g
$ 127.00
N-380-250
250 g
$ 279.00
N-380-500
500 g
$ 475.00
Description
4-Nitrophenyl phosphate, disodium salt hexahydrate is a chromogenic substrate yielding a soluble yellow chromophor for the colorimetric assay of phosphatases and is used for determining alkaline phosphatase activity in human serum.Product Specifications4-Nitrophenyl phosphate, disodium salt hexahydratePNPP, p-nitrophenyl phosphate, para nitrophenyl phosphate, PNP-phos · 2 NaMOLECULAR BIOLOGY GRADEFormula: C6H4NO6PNa2 · 6H2OMW: 371.15 g/molStorage/Handling: Store at -20°C. Protect from light. Literature: Lowry, O. H. (1957). [17] Micromethods for the assay of enzymes. 366-381.Sugasawara, R. J., Prato, C. M., & Sippel, J. E. (1984). Enzyme-linked immunosorbent assay with a monoclonal antibody for detecting group A meningococcal antigens in cerebrospinal fluid. View product page →
Specifications
CAS Number 333338-18-4
Technical Resources
5-ethynyl-2’-deoxyuridine (5-EdU)
Catalog ID
Size
Pricing
More Info
5-ethynyl-2’-deoxyuridine (5-EdU) product image
E-980-100
100 mg
$ 59.00
E-980-250
250 mg
$ 99.00
E-980-500
500 mg
$ 150.00
E-980-1
1 g
$ 225.00
Description
Product Specifications5-ethynyl-2’-deoxyuridine (5-EdU)Formula: C11H12N2O5MW: 252.22 g/molStorage/Handling: Store at -20°C.PubChem Chemical ID: 472172 View product page →
Specifications
CAS Number 61135-33-9
Technical Resources
5-Fluoroorotic acid monohydrate (5-FOA)
Catalog ID
Size
Pricing
More Info
5-Fluoroorotic acid monohydrate (5-FOA) product image
F-230-2.5
2.5 g
$ 54.00
F-230-5
5 g
$ 103.00
F-230-10
10 g
$ 173.00
F-230-25
25 g
$ 318.00
Description

5-Fluoroorotic Acid (5-FOA) is widely used in the field of yeast molecular genetics. The toxicity of 5-FOA to yeast cells with a functioning URA3 gene which encodes orotidine-5′-P decarboxylase (OMP decarboxylase), makes it especially useful for the selection and identification of mutant yeast strains. 5-FOA is most often applied with Saccharomyces cerevisiae (URA3), although it has been used in other strains including Schizosaccharomyces pombe (URA4 and URA5), Candida albicans (URA3) and the bacterium E. coli (pyrF). The use of 5-FOA in the yeast 2-hybrid system allows for the construction of activation domain hybrid libraries to identify protein-protein interactions.

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Specifications
CAS Number 220141-70-8
Technical Resources
50 bp DNA Ladder
Catalog ID
Size
Pricing
More Info
50 bp DNA Ladder product image
D100-500
1x500 μl
$ 55.00
D100-1000
2x500 μl
$ 103.00
D100-1500
3x500 μl
$ 147.00
D100-2000
4x500 μl
$ 185.00
D100-2500
5x500 μl
$ 217.00
D100-3000
6x500 μl
$ 239.00
Description

A unique combination of PCR products and a number of proprietary plasmids digested with appropriate restriction enzymes to yield 17 fragments, suitable for gel electrophoresis. The DNA includes fragments ranging from 50-1,500 base pairs. The 200 and 500 base pair bands have increased intensity to serve as reference points. The approximate mass of DNA in each band is provided (0.5 g a load) for approximating the mass of DNA in comparably intense samples of a similar size.The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
AEBSF
Catalog ID
Size
Pricing
More Info
AEBSF product image
A-540-500
500 mg
$ 47.00
A-540-1
1 g
$ 85.00
A-540-2.5
2.5 g
$ 188.00
A-540-5
5 g
$ 282.00
A-540-10
10 g
$ 510.00
A-540-25
25 g
$ 1150.00
Description

AEBSF is an irreversible serine protease inhibitor. AEBSF has been shown to inhibit trypsin, chymotrypsin, plasmin kallikrein and thrombin. It inhibits by acylation of the active site of the enzyme. As an alternative to PMSF and DFP, AEBSF offers lower toxicity, improved solubility in water and improved stability in aqueous solutions. AEBSF has been used in cell culture in concentrations of up to 0.25 mM. Aqueous solutions are stable between pH 5-6; limited stability above pH 7.5.

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Specifications
CAS Number 30827-99-7
Technical Resources
Agarose LE (Molecular Biology Grade)
Catalog ID
Size
Pricing
More Info
Agarose LE (Molecular Biology Grade) product image
A-201-100
100 g
$ 86.00 $ 69.00
A-201-500
500 g
$ 318.00 $ 255.00
A-201-1000
1 kg
$ 530.00 $ 424.00
Description

Agarose LE (Low Electroendosmosis) is Molecular Biology Grade and is specifically designed for the superior separation of nucleic acids, with maximally crisp band resolution, and is also ideal for cloning and cloning related experiments.

GoldBio Agarose LE is refined in an advanced process that excludes the use of organic solvents. The result is a cleaner end-product with significantly reduced environmental impact. The agarose can be used for analyses of nucleic acids from 50 bp to 25 kbp, protein electrophoresis and various blotting protocols.

The low EEO of the agarose promotes increased electrophoretic mobility, yielding improved resolution and shorter run times. This also allows macromolecules and larger particles (subcellular fragments, viruses, etc.) to migrate more freely through the gel matrix. The consistently low EEO reduces band distortion (caused by counterflow) that can result from the presence of excessive sulfate-rich negative ions.

Agarose is a natural product that forms an inert matrix used in electrophoresis, chromatography and other molecular biology and biochemistry techniques. Likewise, it is neutral and easily derivatizable, so it is easy to bind to its structure proteins like enzymes, antigens or antibodies. Toxicity absence makes working with agarose very convenient.

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Specifications
CAS Number 9012-36-6
Technical Resources
Ampicillin (Sodium), USP Grade
Catalog ID
Size
Pricing
More Info
Ampicillin (Sodium), USP Grade product image
A-301-5
5 g
$ 21.00
A-301-10
10 g
$ 32.00
A-301-25
25 g
$ 43.00
A-301-100
100 g
$ 162.00
A-301-500
500 g
$ 775.00
Description

Ampicillin sodium is a member of the extended-spectrum β-lactam family and similar in structure to penicillin. It is used in the selection of antibiotic cell hybrids and has a high rate of action against many gram-negative bacterial strains. Ampicillin sodium targets non-ESBL (Extended Spectrum β-lactamase) bacteria including Staphylococcus and Streptococcus species and medically important enteric pathogens such as Shigella and Salmonella. It has been found to be effective against certain β-lactam sensitive VRE or vancomycin resistant Enterococcus species. Resistance to ampicillin is routinely utilized as a selectable marker to confirm successful cell transformation. Ampicillin Sodium is freely soluble in water.

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Specifications
CAS Number 69-52-3
Technical Resources
Aprotinin
Catalog ID
Size
Pricing
More Info
Aprotinin product image
A-655-25
25 mg
$ 43.00
A-655-100
100 mg
$ 108.00
Description

Aprotinin is a monomeric globular polypeptide derived from bovine lung tissue. It consists of a chain of 58 amino acids that fold into a stable, compact tertiary structure of the 'small SS-rich" type, containing 3 disulfides, a twisted β-hairpin and a C-terminal α-helix.

Aprotinin inhibits several serine proteases, specifically trypsin, chymotrypsin, plasmin and kallikrein. Its action on kallikrein leads to the inhibition of the formation of factor XIIa. Binding is reversible with most aprotinin-protease complexes dissociating at pH >10 or < 3. Aprotinin is freely soluble in water (>10 mg/ml) as well as low ionic strength aqueous buffers.

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Specifications
CAS Number 9087-70-1
Technical Resources
Asunaprevir
Catalog ID
Size
Pricing
More Info
Asunaprevir product image
A-820-10
10 mg
$ 257.00
A-820-25
25 mg
$ 515.00
Description
Asunaprevir is a potent inhibitor of the enzyme serine protease NS3 in hepatitis C viruses (HCV) and is currently in phase III clinical trials. This enzyme’s C terminal functions as a helicase for host DNA allowing access for viral manipulation. Asunaprevir is used in tandem with ribavirin and other direct or indirect acting antiviral compounds results in a thorough eradication of HCV.Product SpecificationsAsunaprevirFormula: C35H46ClN5O9S MW: 748.28 g/molStorage/Handling: View product page →
Specifications
CAS Number 630420-16-5
Technical Resources
Bacterial Cell Lysis Buffer
Catalog ID
Size
Pricing
More Info
Bacterial Cell Lysis Buffer product image
GB-177-100
100 mL
$ 54.00
GB-177-500
500 mL
$ 106.00
GB-176-100
100 Preps
$ 160.00
GB-176-250
250 Preps
$ 281.00
GB-176-500
500 Preps
$ 518.00
Description
The Bacterial Cell Lysis Kit has been developed for the extraction of biologically active, soluble proteins and inclusion bodies from bacterial cells. The Bacterial Lysis Buffer is a proprietary improvement on the lysozyme based lysis method, which allows extraction of soluble proteins and concurrent removal of nucleic acids (DNA & RNA) released during cell lysis. The kit’s lysis eliminates viscosity build-up, allowing effective clarification with lower centrifugal forces.Bacterial Cell Lysis Buffer is based on organic buffering agents and utilizes a mild non-ionic detergent and a proprietary combination of various salts and agents to enhance extraction and stability of View product page →
Specifications
CAS Number
Technical Resources
BCIP
Catalog ID
Size
Pricing
More Info
BCIP product image
B-500-10
10 g
$ 273.00
B-500-25
25 g
$ 675.00
B-500-50
50 g
$ 1282.00
B-500-100
100 g
$ 2443.00
Description

BCIP is a white to off-white powder that is used as a substrate for visualization of alkaline phosphatase. The end product is insoluble and purple when used with nitroblue tetrazolium. This final product can be visually detected. BCIP is DMF soluble.

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Specifications
CAS Number 6578-06-9
Technical Resources
Benzamidine hydrochloride monohydrate
Catalog ID
Size
Pricing
More Info
Benzamidine hydrochloride monohydrate product image
B-050-500
500 g
$ 225.00
B-050-1
1 kg
$ 375.00
B-050-2.5
2.5 kg
$ 774.00
B-050-5
5 kg
$ 1289.00
Description

Benzamidine hydrochloride monohydrate is an aromatic amidine. It is used in protein extractions as a strong reversible inhibitor of serine proteases such as trypsin, thrombin, plasmin and other trypsin-like proteases. Compared to aprotinin, benzamidine is considered to be just as effective in preventing the degradation of glucogon.

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Specifications
CAS Number 1670-14-0
Technical Resources
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