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High-resolution sequence-function mapping of full-length proteins.

Caitlin A Kowalsky1, Justin R Klesmith2, James A Stapleton1

  • 1Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan, United States of America.

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Summary
This summary is machine-generated.

This study introduces a new sequence tiling method to map the function of entire proteins, overcoming limitations of short-read sequencing for comprehensive gene analysis.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biophysics

Background:

  • Comprehensive sequence-function mapping aims to link every possible gene mutation to its functional impact.
  • Current deep sequencing methods are limited by short read lengths, hindering analysis of full-length proteins.

Purpose of the Study:

  • To extend sequence-function mapping to entire protein sequences.
  • To develop a modular and universal sequence tiling method for this purpose.

Main Methods:

  • A novel sequence tiling method was developed and applied.
  • Experiments utilized both growth-based selections and Fluorescence-Activated Cell Sorting (FACS) screening.
  • Analytical solutions were developed for data normalization across independent selections.

Main Results:

  • The new method successfully generated sequence-function maps for full protein sequences.
  • The protocol provides parameters and best practices for experimental design.
  • Data normalization solutions were presented to ensure cross-selection compatibility.

Conclusions:

  • The developed sequence tiling method expands the scope of sequence-function mapping to full protein sequences.
  • This protocol offers a practical solution for obtaining comprehensive protein sequence-function maps within 4-6 weeks.
  • The introduced best practices are compatible with existing sequence-function mapping protocols.