Molecular Biology Resources

We offer a variety of products for cloning DNA fragments, DNA and RNA extraction, and PCR assays.

Molecular Biology Products for Nucleic Acid Analysis

We offer a variety of products for cloning DNA fragments, DNA and RNA extraction, and PCR assays.

Restriction Enzymes

Restriction enzymes, also referred to as restriction endonucleases, target DNA at specific sequences. First discovered as a bacterial defense against viral DNA, restriction enzymes have been identified by these specific DNA nucleotide target sequences and harnessed in the laboratory for isolating and cloning DNA sequences.

Our EXact-Cut^TM restriction enzymes have been optimized to save time and provide specificity for the cleavage site.

✓ Save Time. DNA digestion in 5-15 minutes

✓ High-fidelity. Engineered to minimize star activity and cleave at the target site.

✓ 100% activity in a single buffer. Supplied with enzyme.

✓ Buffer compatibility with other suppliers.

✓ Gel loading buffer included

✓ Stringent quality control to ensure purity and lot-to-lot consistency

We offer these restriction enzymes and more…

BamHI	BsaI	BsmBI	DpnI
DpnII	EcoRI	EcoRV	HindIII
KpnI	MnlI	NdeI	NheI
NotI	NsiI	PstI	SacI
XbaI	XhoI

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Fast Digestion in 5-15 minutes

Restriction enzymes demonstrating digestion efficiency at 5 minutes (left panel) and 15 minutes (right panel) in single, double and triple digestions with 1 ug Plasmid DNA.

T4 Ligase and Additional Products

T4 DNA Ligase (1000 Units or 3000 Units)
Omni-nuclease (Benzonase)

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PCR Products

PCR Master Mixes
DNA and RNA extraction kits
DNA purification kits
DNA Electrophoresis buffers and dyes
DNA Electrophoresis agarose gel
cDNA synthesis kits

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Frequently Asked Questions (FAQ)

Exreprotein LLC supplies a comprehensive range of molecular biology reagents, including DNA extraction kits, RNA extraction kits, DNA extraction and purification kits, genomic DNA extraction kits, SUMO protease, restriction endonuclease enzymes, nucleases, and supporting buffers. These products are designed for reliable workflows in research laboratories for nucleic acid isolation, cloning, sequencing, and protein expression.

Our DNA and RNA extraction kits are optimized for a wide range of biological materials, including cultured mammalian cells, bacterial and yeast cultures, fresh or frozen tissues, and microbial samples. The kits provide efficient lysis, inhibitor removal, and high-yield recovery suitable for PCR, qPCR, and next-generation sequencing.

A genomic DNA extraction kit is recommended when high-molecular-weight, intact DNA is required for sensitive applications such as long-range PCR, NGS library preparation, or genomic analysis. Standard DNA extraction and purification kits are ideal for routine workflows where speed and convenience are priorities.

SUMO protease is used to precisely remove SUMO fusion tags from recombinant proteins after expression. It provides highly specific cleavage with minimal non-specific proteolysis, helping preserve protein structure and activity. This makes it essential for protein purification, functional assays, and downstream biochemical studies.

A restriction endonuclease enzyme cuts DNA at specific recognition sequences, enabling precise DNA digestion for cloning, plasmid construction, DNA mapping, and synthetic biology. Using high-quality, optimized enzymes ensure consistent digestion efficiency and reproducible experimental results.