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Genome Annotation and Assembly

Genome Annotation and Assembly

The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.

Imaging Biological Samples with Optical Microscopy

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

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Related Experiment Video

Updated: Feb 16, 2026

High-Throughput Analysis of Optical Mapping Data Using ElectroMap

High-Throughput Analysis of Optical Mapping Data Using ElectroMap

Published on: June 4, 2019

Is It Ordered Correctly? Validating Genome Assemblies by Optical Mapping.

Joshua A Udall¹, R Kelly Dawe²

¹Plant and Wildlife Science Department, Brigham Young University, Provo, Utah 84602 jaudall@gmail.com.

|December 22, 2017

Summary

This summary is machine-generated.

Optical mapping offers a cost-effective method for validating and enhancing genome assemblies, especially for species lacking extensive genetic resources. This technique provides crucial confirmation and aids in refining assemblies from various sequencing methods.

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High-Throughput Analysis of Optical Mapping Data Using ElectroMap

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Published on: June 4, 2019

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Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies

Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies

Published on: August 20, 2021

Area of Science:

Genomics
Bioinformatics
Molecular Biology

Background:

Advancements in long-read sequencing and Hi-C technologies enable complete genome assembly, even for species with limited genetic resources.
Current validation methods for genome assemblies are often insufficient or costly, leading to potential errors.
There is a need for accessible and reliable methods to validate and improve genome assemblies.

Purpose of the Study:

To introduce optical mapping as a practical tool for validating genome assemblies.
To provide guidelines for interpreting optical map data in the context of genome assembly.
To demonstrate how optical map data can enhance genome assemblies derived from sequence contigs and Hi-C pseudomolecules.

Main Methods:

Utilizing optical mapping technology for genome assembly validation.
Analyzing and interpreting optical map data to assess assembly accuracy and contiguity.
Integrating optical map data with traditional sequence contigs and Hi-C pseudomolecules to improve genome assemblies.

Main Results:

Optical mapping serves as an accessible and mature technology for validating genome assemblies.
Interpretation of optical map data allows for the identification of assembly errors and improvements.
Optical map data can be effectively used to enhance genome assemblies, increasing their completeness and accuracy.

Conclusions:

Optical mapping is a valuable tool for validating and enhancing genome assemblies, particularly in resource-limited situations.
This approach mitigates errors associated with overreliance on synteny for assembly confirmation.
Optical mapping provides a cost-effective strategy for improving the quality of de novo genome assemblies.