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How old is your fold?

Henry F Winstanley¹, Sanne Abeln, Charlotte M Deane

¹Department of Statistics 1 South Parks Road, Oxford OX1 3TG, UK.

Bioinformatics (Oxford, England)

|June 18, 2005

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Researchers developed a novel method to estimate the relative ages of protein folds, revealing that alpha/beta folds are significantly older than small folds, advancing our understanding of protein evolution.

Area of Science:

Biochemistry
Evolutionary Biology
Structural Bioinformatics

Background:

Currently, no established methods exist for estimating the evolutionary age of protein structures.
Understanding the timeline of protein fold emergence is crucial for studying protein structure evolution and classification.

Purpose of the Study:

To develop the first relative age estimation technique for protein folds.
To provide a tool for investigating protein structure evolution and improving classification methods.

Main Methods:

Developed a method based on constructing parsimonious scenarios to describe protein fold occurrence patterns in species phylogenies.
Utilized phylogenetic data and occurrence patterns to infer relative ages.

Main Results:

Related Experiment Videos

Created a robust relative age estimation technique for protein folds.
Age estimates demonstrated robustness across different phylogenetic trees and data types.
Observed distinct age patterns between alpha/beta folds and small folds, with alpha/beta folds being generally older.

Conclusions:

The new technique offers a more discriminating approach to estimating protein fold ages compared to existing methods.
The findings provide initial insights into the differential evolutionary histories of various protein fold types.
This work serves as a foundation for future investigations into the evolutionary trajectory of protein structures.