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Related Experiment Video

Updated: Aug 6, 2025

High-throughput Purification of Affinity-tagged Recombinant Proteins
07:44

High-throughput Purification of Affinity-tagged Recombinant Proteins

Published on: August 26, 2012

14.3K

Minimal purification method enables developability assessment of recombinant proteins.

Sergio A Rodriguez-Aponte1,2, Christopher A Naranjo2, Ryan S Johnston2

  • 1Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.

Biotechnology and Bioengineering
|March 17, 2023
PubMed
Summary
This summary is machine-generated.

A new, fast purification method for recombinant proteins from yeast cultures yields milligrams of highly pure material. This technique enables rapid biophysical characterization of protein therapeutics and vaccine candidates without genetic tags.

Keywords:
Komagataella phaffiiPichia pastorisSARS‐CoV‐2 RBDdevelopability assessmentplatform purificationrecombinant protein

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Area of Science:

  • Biochemistry
  • Protein Engineering
  • Biotechnology

Background:

  • Analytical characterization of proteins is crucial for developing therapeutics and vaccine candidates.
  • Current methods often require significant amounts of purified protein and may involve genetic tags, complicating analysis.
  • Assessing protein properties against a target product profile (TPP) necessitates high purity and native structure.

Purpose of the Study:

  • To develop a rapid, minimal purification process for recombinant proteins from Komagataella phaffii.
  • To enable efficient biophysical characterization of protein therapeutics and vaccine candidates.
  • To eliminate the need for genetic tagging in early-stage protein assessment.

Main Methods:

  • A two-stage purification process involving buffer exchange and Q-membrane filtration of yeast culture supernatant.
  • Utilized a 20 mL culture volume for protein production.
  • Evaluated impurity removal, including host-cell proteins (HCPs) and DNA.

Main Results:

  • Achieved 1-2 mg of purified protein with >60% purity from a 20 mL culture.
  • Demonstrated effective removal of key supernatant impurities (HCPs, DNA).
  • Successfully purified various proteins, including SARS-CoV-2 antigens, single-domain antibodies, and growth hormone.

Conclusions:

  • The described minimal purification method is fast, efficient, and yields sufficient protein for biophysical characterization.
  • This approach facilitates early-stage assessment and comparison of protein therapeutics and vaccine candidates.
  • The methodology obviates the need for genetic tagging and extensive chromatographic development.