Related Experiment Video
Updated: Jul 19, 2026
13:10
Use of Alu Element Containing Minigenes to Analyze Circular RNAs
Published on: March 10, 2020
Quasiperiodic property in Alu repeats
1Biomolecular Physics and Modeling Group, Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 10, 2006
Summary
We found common quasiperiodic patterns in Alu repeats, a type of noncoding DNA. Right monomers consistently show a quasiperiod of 8, while left monomers exhibit quasiperiods of 8 or 5, aiding future function exploration.
Area of Science:
- Genomics
- Bioinformatics
- Molecular Biology
Background:
- Alu repeats are abundant noncoding DNA sequences in the human genome.
- Understanding their structural properties may reveal insights into their biological roles.
- Previous studies have explored various aspects of Alu repeat sequences.
Purpose of the Study:
- To investigate the presence and characteristics of quasiperiodic properties within Alu repeat sequences.
- To identify common quasiperiods across different families of Alu repeats.
- To explore the potential functional implications of observed quasiperiodic patterns.
Main Methods:
- Utilized a quasiperiodic matrix algorithm to analyze DNA sequences.
- Calculated quasiperiods for both right and left monomers of Alu repeats from diverse families.
- Statistical analysis to determine the significance of identified quasiperiods.
Main Results:
- Right monomers of all analyzed Alu repeat families consistently displayed a significant quasiperiod of 8.
- Left monomers exhibited quasiperiods of either 8 or 5.
- Common quasiperiodic signatures were identified in the majority of Alu repeat sequences.
Conclusions:
- Alu repeats possess significant and common quasiperiodic properties.
- The identified quasiperiods (8 and 5) in monomers suggest underlying structural regularities.
- These findings provide a foundation for further research into the functional significance of Alu repeat quasiperiodicity.
More Related Videos
08:22A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene
Published on: September 16, 2019
05:22Electrophoretic Analysis of Replication Through Structure-Prone DNA Repeats Within the SV40-Based Human Episome
Published on: September 13, 2024
Related Concept Videos
01:49Hardy-Weinberg Principle
Diploid organisms have two alleles of each gene, one from each parent, in their somatic cells. Therefore, each individual contributes two alleles to the gene pool of the population. The gene pool of a population is the sum of every allele of all genes within that population and has some degree of variation. Genetic variation is typically expressed as a relative frequency, which is the percentage of the total population that has a given allele, genotype or phenotype.In the early 20th century,...
01:16Properties of Laplace Transform-II
Time differentiation, convolution, integration, and periodicity are fundamental concepts in analyzing functions and signals over time. Each concept provides a unique perspective on how functions evolve, interact, and repeat, offering essential tools for various scientific and engineering applications.
Time differentiation involves analyzing the rate of change of a function over time. Mathematically, it is the derivative of a function with respect to time. This concept can be likened to tracking...
Time differentiation involves analyzing the rate of change of a function over time. Mathematically, it is the derivative of a function with respect to time. This concept can be likened to tracking...
01:20Properties of Fourier series I
The Fourier series is a powerful tool in signal processing and communications, allowing periodic signals to be expressed as sums of sine and cosine functions. A foundational property of the Fourier series is linearity. If we consider two periodic signals, their linear combination results in a new signal whose Fourier coefficients are simply the corresponding linear combinations of the original signals' coefficients. This property is crucial in applications like frequency modulation (FM) radio,...
02:53Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
02:37Gene Duplication and Divergence
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
01:30Arithmetic Sequences
An arithmetic sequence is a structured arrangement of numbers where each term is derived by adding a constant value, known as the common difference, to the previous term. This consistent pattern allows for the efficient computation of any term within the sequence as well as the cumulative sum of multiple terms. The formula for finding the nth term of an arithmetic sequence is:Here, aₙ represents the nth term of the sequence, a is the first term, d is the common difference, and n is the term...