New Products

GoldBio’s Cohn Analog BSA is a highly purified, lyophilized “Fraction V” bovine serum albumin designed for sensitive applications in cell culture, microbial culture, reproductive biology, and molecular biology. Derived from the plasma of USDA-inspected healthy animals in U.S.-based facilities, this lyophilized “Fraction V” powder is produced using a proprietary, non-solvent procedure, including membrane dialysis, filtration, and a modified Cohn/heat-shock procedure, to inactivate proteases and minimize analytes.

GoldBio Cohn Analog BSA is free of carbohydrates and suitable for applications such as Western blotting, enzyme systems, protein standards, hybridizations, and protease-sensitive immunoassays. Our BSA is protease-free and low-interference, consisting of high purity with low backgrounds. Cohn Analog BSA offers a superior performance for enhancing growth and maintaining consistency in demanding workflows making it the reliable choice for both standard and sensitive molecular biology experiments.

GoldBio's Precision Grade, Fatty Acid Free BSA from New Zealand is ideally suited for fatty acid sensitive cell culture systems, such as CHO, Vero and MDCK cells, as well as for the most sensitive diagnostic and research applications.

GoldBio BSA is a highly purified, lyophilized albumin, suitable for Westerns, enzyme systems, protein standards, hybridizations and as a protease-sensitive immunoassays. It is also perfectly suitable as a nutrient in cell culture media, with low interference and backgrounds and is ideal for most standard molecular biology experiments. BSA protein is a single polypeptide chain consisting of ~583 amino acid residues and no carbohydrates and is approximately 66 kDa in size. Fraction V refers to the fifth fraction of the original Cohn purification of plasma proteins using cold ethanol precipitation and is still commonly used as a name for bovine serum albumin regardless of purification method.

GoldBio's Caprylate Stabilized BSA from New Zealand is a highly purified, lyophilized albumin, suitable for Westerns, enzyme systems, protein standards, hybridizations and as a protease-sensitive immunoassays. It is also perfectly suitable as a nutrient in cell culture media, with low interference and backgrounds and is ideal for most standard molecular biology experiments.

Sulfhydryl Blocked Bovine Serum Albumin (sBSA) is a highly purified, lyophilized albumin designed for immunoassays and enzymatic applications that require minimal reactivity. sBSA maintains a high-monomer form with reduced cross-reactivity, ensuring exceptional stability and accuracy. sBSA is ideal for applications like acridinium ester chemiluminescence and immunoassays and is compatible with maleimide conjugation for added experimental flexibility.

Sulfhydryl BSA is particularly useful in thiol-sensitive assays, capable of blocking over 90% of the free thiol groups in BSA. Sulfhydryl BSA is free from EDTA and fatty acid-stabilized, making it suitable for a wide range of assay types. This BSA is sourced from Fraction V of the original Cohn purification, ensuring reliability and consistency. In addition to its blocking capabilities, sBSA is also used in protein standards, cell culture media, and protease-sensitive immunoassays, offering versatility across various biological and biochemical applications.

GoldBio’s Agrobacterium Competent Cell Recovery Medium is an animal-free recovery medium specifically formulated for optimal competent cell transformations for Agrobacterium competent cells.

GoldBio’s E. Coli Competent Cell Recovery Medium is an animal-free recovery medium specifically formulated for optimal competent cell transformations for all E. coli competent cells.

The BLUEstain™ Low Range Protein Ladder, 2 to 40 kDa is a ready-to-use three-color protein standard with 6 pre-stained proteins covering a range of molecular weights from 2 to 40 kDa. Proteins are covalently coupled with a blue chromophore except for two reference bands (one green and one red band at 10 kDa and 40 kDa respectively) when separated on SDS-PAGE.

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

GoldBio's SuperLadder (50 bp-25 kb) is a ready-to-use DNA ladder, which is pre-mixed with loading dye for direct gel loading. The DNA Ladder is composed of 26 individual DNA fragments: 25k, 10k, 8k, 6k, 5k, 4k, 3k, 2.5k, 2k, 1.5k, 1.2k, 1k, 900, 800, 700, 600, 500, 450, 400, 350, 300, 250, 200, 150, 100 and 50 base pairs derived from a mixture of PCR products and specifically digested plasmid DNA.

This product contains four enhanced bands (3k, 1.2k, 500 and 200 bp) for easier reference. In addition, three tracking dyes are present (Xylene cyanol FF, Bromophenol blue and Orange G) which mimic the migration of 4,000 bp, 500 bp and 50 bp dsDNA respectively during electrophoresis on a 1% TAE agarose gel which helps in real time monitoring.

GoldBio CJ236 chemically competent E. coli cells are ideally suited for use in the Kunkel method of mutagenesis. CJ236 cells have part of their Thymine replaced with deoxyuracil in the DNA due to dut- and ung- mutations which prevent the cells from removing uracil from DNA caused by misincorporation or dCTP deamination. CJ236 contains the F’ gene which confers Chloramphenicol resistance.

Kit Components

• Competent Cells
• 1 x 12 mL Recovery Media
• 1 x 10 µL Control Plasmid (pUC19 Control, 500 pg/µL)

GoldBio CJ236 Electrocompetent E. coli cells are ideally suited for use in the Kunkel method of mutagenesis. CJ236 cells have part of their Thymine replaced with deoxyuracil in the DNA due to dut- and ung- mutations which prevent the cells from removing uracil from DNA caused by misincorporation or dCTP deamination. CJ236 contains the F’ gene which confers Chloramphenicol resistance.

Kit Components

• Competent Cells
• 1 x 12 mL Recovery Media
• 1 x 10 µL Control Plasmid (pUC19 Control, 500 pg/µL)