Structural facets of POU2F1 in light of the functional annotations and sequence-structure patterns

Ashmita Dey1, Sagnik Sen1, Vladimir N Uversky2,3

  • 1Computer Science and Engineering, Jadavpur University, Kolkata, West Bengal, India.

Insights

POU domain class 2 homebox 1 (POU2F1) is a transcription factor linked to cancer. This study developed a framework to analyze POU2F1

Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Genomics

Background:

  • POU domain class 2 homebox 1 (POU2F1) is a key transcription factor implicated in various cancers.
  • Its structural flexibility hinders the development of targeted drugs, despite its significance in pancancer analysis.
  • Understanding POU2F1's structural dynamics is crucial for therapeutic strategies.

Purpose of the Study:

  • To propose a comprehensive framework for analyzing the structural conservation and co-variation of POU2F1.
  • To elucidate the relationship between POU2F1's structure, function, and its role in cancer.
  • To identify key residues responsible for POU2F1's functional multiplicity.

Main Methods:

  • Gene regulatory network construction to map POU2F1's normal and pathological functions.
  • Evolutionary sequence space analysis and comparative sequence dynamics between species.
  • Direct coupling analysis for residual co-variation and structure network analysis.
  • Quality assessment and normal mode-based structure network analysis of POU2F1.

Main Results:

  • A three-level framework was established to analyze POU2F1 structure and function.
  • Key residues (3, 9, 13, 17, 20, 21, 28, 35, 36) were identified as crucial structural facets for function.
  • Structural malleability of POU2F1 was confirmed as a reason for its protein moonlighting and functional multiplicity.

Conclusions:

  • The developed framework provides insights into POU2F1's structural dynamics and functional roles.
  • Identified key residues can guide future drug design targeting POU2F1.
  • Understanding POU2F1's structural flexibility is essential for cancer research and therapeutic development.

Related Concept Videos

Structural Protein Function01:56

Structural Protein Function

3.1K
Structural Protein Function01:56

Structural Protein Function

Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity.  In bones and teeth, it mineralizes to...
29.6K
Structure of a Gene01:30

Structure of a Gene

A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
15.2K
Tagging and Fusion Proteins01:24

Tagging and Fusion Proteins

Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
8.2K
Structure of Porins01:21

Structure of Porins

Mitochondria, chloroplasts, and gram-negative bacteria have transmembrane, beta-barrel proteins called porins to mediate the free diffusion of ions and metabolites across the membrane. Mitochondrial porin precursors contain conserved amino acid sequences called beta signals at their C-terminal. Beta signals have a  motif of PoXGXXHyXHy (Po-Polar, X-Any amino acid, G-Glycine, Hy-LargeHydrophobic), which are crucial for precursor recognition to initiate precursor assembly. Beta-barrel...
3.7K
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
5.0K