Nucleotide Resolution Imaging

Nucleotide-resolution imaging comprises methods that visualize nucleic acids or nucleotide-level features with enough spatial detail to distinguish individual bases, enabling direct analysis of molecular organization and interactions. Depending on the platform, fluorescent probes, labeled nucleotides, or sequencing-linked readouts generate signals at defined positions, which are registered against a nucleic-acid sequence or structure to produce a nucleotide-scale map. In biochemistry, these maps can reveal base pairing, chemical modification, strand breaks, protein-binding sites, and conformational changes, supporting studies of gene regulation, RNA folding, genome organization, and disease-associated molecular alterations.

Nucleotide Resolution Imaging - Related Videos

Research

JoVE Journal - Biology
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iCLIP - Transcriptome-wide Mapping of Protein-RNA Interactions with Individual Nucleotide Resolution

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Cited by 203 •

2011

The spatial arrangement of RNA-binding proteins on a transcript is a key determinant of post-transcriptional regulation. Therefore, we developed individual-nucleotide resolution UV crosslinking and immunoprecipitation (iCLIP) that allows precise genome-wide mapping of the binding sites of an RNA-binding protein.

Methods to Increase the Sensitivity of High Resolution Melting Single Nucleotide Polymorphism Genotyping in Malaria

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Cited by 10 •

2015

While high resolution melting analysis offers the ability to differentiate between single nucleotide polymorphisms in a heterogeneous population, mutant allele amplification bias can increase its ability to detect alleles present at relatively low percentages within a sample. This protocol describes improvements that improve the sensitivity of high resolution melting analysis.

Research

JoVE Journal - Neuroscience

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

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Cited by 8 •

2012

This article describes techniques to perform high-resolution functional magnetic resonance imaging with 1.2 mm sampling in human midbrain and subcortical structures using a 3T scanner. Use of these techniques to resolve topographic maps of visual stimulation in the human superior colliculus (SC) is given as an example.

Super-resolution Imaging of the Bacterial Division Machinery

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Cited by 17 •

2013

We describe a super-resolution imaging method to probe the structural organization of the bacterial FtsZ-ring, an essential apparatus for cell division. This method is based on quantitative analyses of photoactivated localization microscopy (PALM) images and can be applied to other bacterial cytoskeletal proteins.

Assessing Cortical Cerebral Microinfarcts on High Resolution MR Images

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Cited by 24 •

2015

A high resolution ex vivo 7T MR imaging protocol is presented, to perform MR-guided histopathological validation of microvascular pathology in post-mortem human brain tissue. Furthermore, guidelines are provided for the assessment of cortical microinfarcts on in vivo 7T as well as 3T MR images.

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