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Protein purification

Cytoskeleton, Inc. has been a trusted provider of recombinant and native protein production services for 30+ years. What sets us apart is our focus on consistent quality—we deliver uniform protein batches to support your project from discovery to scale-up. Consistency isn’t just our goal, it’s our guarantee.

Protein purification services

We support diagnostic development, HTS workflows, and exploratory discovery with custom protein production services. Beyond monomeric recombinant proteins, clients rely on Cyto for complex purifications like specialized tubulins, multiprotein complexes (e.g., actin thin filaments, Arp2/3), and native proteins (e.g., myosins, dynein). Each project includes validated activity assays to ensure bio-functionality—an essential component of our end-to-end workflow.

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Why choose us?

Cytoskeleton partners closely with your team to deliver custom protein production according to your specifications, leveraging deep expertise in cytoskeletal biology and protein biochemistry. Our high-quality service supports key project decisions, while our focus on collaboration and reliability keeps leading pharma and biotech companies returning year after year.

Proven expertise

  • For 30+ years, a trusted name in protein biochemistry
  • Broad portfolio of protein production
  • Rapid formulation of lyophilized reagents optimized for HTS use
  • Small or large scale protein production, milligram to kilogram quantities

Reliable, robust results

  • Consistent lot-to-lot protein quality
  • Robust QC process development
  • Detailed documentation

Collaborative approach

  • Dedicated, PhD level, protein purification specialists
  • Expert scientific collaboration tailored to project needs
  • Weekly meetings with project lead and manager

Fast, reliable delivery

  • Turn around for new projects as short as 3-6 weeks
  • Repeat orders 1-2 weeks
  • >97% client satisfaction, >80% returning customers

Protein purification services

Parameter

Cyto expertise available

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Protein type

  • Recombinant monomeric
  • Recombinant protein complex
  • Native monomeric
  • Native protein complex
  • Other
Custom Services Inquiry

Recombinant expression system

  • Bacterial
  • Insect
  • Mammalian
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Construct design

  • Design & synthesize DNA construct/s
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Amount required

  • µg to kg
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Purity required

  • Purity expectation is a key deliverable
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Biological activity determination

  • Cyto can develop a custom activity assay
  • Implement one according to the client's specifications
  • Send to client for activity determination
Custom Services Inquiry

Target protein modification

  • Recombinant tag removal
  • Biotinylation
  • Fluorescent labeling
  • PTM modification
Custom Services Inquiry

Protein purification in action

The objective

A Fortune 500 biopharmaceutical company required a reproducible, high-purity source of actin thin filaments along with the corresponding skeletal muscle myosin subfragment-1 (S1) to develop and validate a calcium-regulated myosin ATPase assay. This assay was designed to accurately reflect the calcium sensitivity of actomyosin interactions in a controlled, in vitro setting.

The result

Our team strategically structured the work into five clear phases, delivering results at each stage over a period of seven months. We successfully isolated and validated six native proteins with confirmed biological activity, and co-developed robust, validated assays with the client. Deliverables included user-friendly lyophilized proteins and a reliable, easy-to-interpret assay system. Our custom proteins enabled the client to generate hits and refine lead compounds targeting cardiomyopathies.

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Our clients

We proudly support leading research teams across pharma, biotech, and academia. Our custom services have helped advance discovery and preclinical programs in oncology, neuroscience, cardiology, and beyond.

  • Merck & Co., Inc.
  • Eli Lilly & Co.
  • Amgen, Inc.
  • Abbott Laboratories
  • Pfizer, Inc.
  • Astra-Zeneca plc
  • GlaxoSmithKline plc
  • Genentech, Inc.
  • Johnson & Johnson
  • Bristol-Myers Squibb

Purified for performance-so you can work with confidence. Reach out today.

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Cytoskeleton, Inc
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Tel: 303-322-2254

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