Protein Analysis

There are thousands of different proteins across several different classes in biology, each with a distinct purpose. In your research environment you need tools that help you identify and classify your proteins with confidence. GoldBio’s BLUEstainTM ready-to-use protein ladders offer high band resolution across a wide range of molecular weights, and our electrophoresis gels and dyes like ponceau S help you separate and visualize your protein sample. GoldBio’s commitment to quality and affordability assures you the best products for the best price.

Sub-Categories

Showing 1-5 of 5 items.

BLUEstain™ 2 Protein ladder, 5-245 kDa

Catalog ID Size Pricing
P008-500 500 µL $ 115.00
P008-1000 2x500 µL $ 224.00
P008-1500 3x500 µL $ 321.00
P008-2000 4x500 µL $ 417.00
P008-2500 5x500 µL $ 506.00
P008-3000 6x500 µL $ 591.00

Description

The BLUEstain™ 2 Protein ladder is a three-color protein standard with 13 prestained proteins, covering a wide range molecular weights from 3.5 to 245 kDa. Proteins are covalently coupled with a blue chromophore except for two reference bands (one green and one red band at 25 kDa and 75 kDa respectively) when separated on SDS-PAGE (Tris-glycine buffer).


The BLUEstain™ 2 Protein ladder is designed for monitoring protein separation during SDS-polyacrylamide gel electrophoresis, verification of Western transfer efficiency on membranes (PVDF, nylon, or nitrocellulose) and for approximating the size of proteins. The ladder is supplied in gel loading buffer and is ready to use. Do not heat, dilute or add reducing agent before loading.

Product Specifications

Catalog ID P008
Storage/Handling Store at 4°C for 3 months. Store at -20°C for 24 months.
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P008-500 500 µL $ 115.00
P008-1000 2x500 µL $ 224.00
P008-1500 3x500 µL $ 321.00
P008-2000 4x500 µL $ 417.00
P008-2500 5x500 µL $ 506.00
P008-3000 6x500 µL $ 591.00

BLUEstain™ Protein ladder, 11-245 kDa

Catalog ID Size Pricing
P007-500 500 µL $ 115.00
P007-1000 2x500 µL $ 224.00
P007-1500 3x500 µL $ 321.00
P007-2000 4x500 µL $ 417.00
P007-2500 5x500 µL $ 506.00
P007-3000 6x500 µL $ 591.00

Description

The BLUEstain™ Protein ladder is a three-color protein standard with 12 prestained proteins covering a wide range molecular weights from ~11 to 245 kDa. Proteins are covalently coupled with a bluechromophore except for two reference bands (one green and one red band at 25 kDa and 75 kDa respectively) when separated on SDS-PAGE (Tris-glycine buffer). The BLUEstain™ Protein ladder, is designed for monitoring protein separation during SDS-polyacrylamide gel electrophoresis, verification of Western transfer efficiency on membranes (PVDF, nylon, or nitrocellulose) and for approximating the size of proteins. The ladder is supplied in gel loading buffer and is ready to use.

Product Specifications

Catalog ID P007
Storage/Handling Store at 4°C for 3 months. Store at -20°C for 24 months.
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P007-500 500 µL $ 115.00
P007-1000 2x500 µL $ 224.00
P007-1500 3x500 µL $ 321.00
P007-2000 4x500 µL $ 417.00
P007-2500 5x500 µL $ 506.00
P007-3000 6x500 µL $ 591.00

Ponceau S

Catalog ID Size Pricing
P-330-10 10 g $ 15.00
P-330-50 50 g $ 55.00

Description

Ponceau S is the sodium salt of a diazo dye used as a stain for rapid reversible staining of protein bands on nitrocellulose or PVDF. It is often used in the staining of polypeptides to be later blot-sequenced because it does not adversely affect the sequencing of the blotted peptides. The stain is also reversible with water washes, preferable for immunological detection, and can even be completely removed. Ponceau S is a negatively charged stain which binds to positively charged amino acids as well as non-polar regions of proteins. The limit of detection for Ponceau S is ~250 ng of protein.

Product Specifications

Catalog ID P-330
CAS # 6226-79-5
MW 760.57 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at room temperature.
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P-330-10 10 g $ 15.00
P-330-50 50 g $ 55.00

Ponceau S Solution 1 mg/mL

Catalog ID Size Pricing
P-330-SL1 1 L $ 70.00

Description

Ponceau S is the sodium salt of a diazo dye used as a stain for rapid reversible staining of protein bands on nitrocellulose or PVDF.It is often used in the staining of polypeptides to be later blot-sequenced because it does not adversely affect the sequencing of the blotted peptides.The stain is also reversible with water washes, preferable for immunological detection, and can even be completely removed.Ponceau S is a negatively charged stain which binds to positively charged amino acids as well as non-polar regions of proteins. The limit of detection for Ponceau S is ~250 ng of protein.

Product Specifications

Catalog ID P-330-SL
MW 760.57 g/mol
Grade MOLECULAR BIOLOGY GRADE
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P-330-SL1 1 L $ 70.00

ProGlow™ Western Blot Protein Ladder

Catalog ID Size Pricing
P004-100 20 lanes / 100 μL $ 30.00
P004-250 50 lanes / 250 μL $ 47.00
P004-500 100 lanes / 500 μL $ 87.00
P004-1250 250 lanes / 2x 625 μL $ 173.00

Description

ProGlow™ Western Blot Protein Ladders are designed for Western blots. ProGlow™ ladders can be used to monitor electrophoresis progress and to visualize protein standard bands directly on X-ray film or digital analytical equipment. ProGlow™ ladders consist of eight recombinant proteins in the range of 12-90 kDa. The 70 kDa protein is a prestained marker used for monitor of the electrophoresis process and evaluation of Western transfer efficiency. The other seven markers can bind to human, mouse, rat, goat, sheep and rabbit IgG with their IgG binding site, allowing direct visualization of markers on the X-ray film after ECL development.

Product Specifications

Catalog ID P004
Storage/Handling Store at 4°C for 3 months. Store at -20°C for 24 months.
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P004-100 20 lanes / 100 μL $ 30.00
P004-250 50 lanes / 250 μL $ 47.00
P004-500 100 lanes / 500 μL $ 87.00
P004-1250 250 lanes / 2x 625 μL $ 173.00

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