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May 20, 2026Protein ScienceOpen Access

Use of tandem‐affinity chromatography to incorporate nucleotide loading of small GTPases during their purification

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Authors

RORofiat OladimejiCOChigozie OdoELEthan Lewis

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Overview

Randomized trial demonstrates expedited purification and nucleotide loading of small GTPases, suggesting enhanced structural studies.

Key Points

  • The study aims to improve the purification and nucleotide loading process for small GTPases to facilitate structure-function analyses.
  • Developed a tandem-affinity purification protocol using split-intein based technology.
  • Used K-Ras4B and H-Ras to validate effectiveness of the purification method in generating high-quality proteins.
  • Achieved crystallizable grade protein loading in under 36 hours.
  • Generated significant quantities of pure, homogenously loaded small GTPases like K-Ras4B and H-Ras.
  • Successfully loaded proteins with GDP or the non-hydrolysable GTP analogue GppNHp.
  • Demonstrated rapid purification process in less than 36 hours.

Cite This Study

Oladimeji et al. (2026) studied this question.

synapsesocial.com/papers/6a0d4f62f03e14405aa9ab9chttps://doi.org/10.1002/pro.70628
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