Beads On String
Beads On String - Related Videos
01:04
Problem-Solving: Tuning of a Guitar String
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2023
In the case of stringed instruments like the guitar, the elastic property that determines the speed of the sound produced is its linear mass density or the mass per unit length. This is simply called the linear density. If the string's linear density is constant along the string, then the linear density is simply the total mass divided by the total length. The string's wave speed can be regulated by varying the linear density. Tension is the other property that determines the speed of...
10:26
Dendrochronological Dating and Provenancing of String Instruments
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Cited by 1 •
2022
The dendrochronological analysis of a stringed instrument requires inspecting the top plate, measuring the tree ring widths, establishing the chronology of the instrument, and dating through determining the end date-the year of the formation of the most recent tree ring.
10:00
A Customizable Protocol for String Assembly gRNA Cloning (STAgR)
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Cited by 2 •
2018
Here, we present string assembly gRNA cloning (STAgR), a method to easily multiplex gRNA vectors for CRISPR/Cas9 approaches. STAgR makes gRNA multiplexing simple, efficient and customizable.
14:14
Optimized Fibrin Gel Bead Assay for the Study of Angiogenesis
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Cited by 165 •
2007
This video demonstrates the protocol of an in vitro angiogenesis assay that recapitulates several stages of angiogenesis. Time-lapse images of sprouting, lumen formation, branching and anastomosis - key features of angiogenesis - are shown.
08:30
Investigating von Willebrand Factor Pathophysiology Using a Flow Chamber Model of von Willebrand Factor-platelet String Formation
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Cited by 6 •
2017
In this paper, we describe a method to assess endothelial von Willebrand factor release and the subsequent platelet capture under fluid shear stress in response to inflammatory stimuli using an in vitro flow chamber system.
FAQs
The histone octamer acts as the protein core around which DNA is wrapped, allowing a long genome to occupy less physical space. This packaging does not simply hide the DNA; the organized arrangement still permits regulatory proteins to reach genes. That balance between compaction and accessibility makes nucleosome organization important for both chromosome structure and gene control.
Linker DNA connects adjacent nucleosomes and gives the repeating units continuity along the chromatin fiber. These connecting segments help produce the extended structure described as the 10-nanometer fiber rather than a collection of isolated nucleosomes. As a result, linker DNA is part of the architecture that supports further chromatin organization and influences how the packaged genome is arranged.
Nucleosome packaging affects how readily regulatory proteins can reach DNA sequences associated with genes. When the organization of this chromatin level changes, gene accessibility can also change, influencing transcriptional control. Studying these relationships helps explain how cells maintain compact genomes while regulating which genetic information remains available for cellular functions.
The 10-nanometer fiber provides an organizational foundation for subsequent folding of chromatin into higher-order chromosome structures. Examining this level therefore connects the local arrangement of DNA and histones with the larger-scale architecture of chromosomes. It helps researchers trace how repeated nucleosome organization contributes to genome packaging beyond the individual nucleosome.
Research on this chromatin organization can address how cells package genomes, regulate transcription, replicate DNA, and alter gene accessibility. These areas are connected because the same packaged DNA must remain compact yet usable. The topic therefore provides a structural framework for investigating several linked processes in biology rather than focusing only on chromosome appearance.
Changes in chromatin organization can provide a molecular basis for differences in gene accessibility and transcriptional control. By examining the nucleosome-based fiber, researchers can relate genome packaging to the ability of regulatory proteins to reach genes. This makes the topic useful for interpreting how structural changes in chromatin may accompany altered genetic activity.