Fully Transposed Line
Fully Transposed Line - Related Videos
02:57
DNA-only Transposons
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2020
DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure. The donor site from where the transposon is excised is either degraded or...
03:29
PiggyBac Transposon-Mediated Gene Editing in Human iPSCs: A Procedure to Integrate Gene of Interest in Human iPSCs Using PiggyBac Transposon System
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2025
This video demonstrates the procedure to generate motor neurons by transfection of human iPSCs with PiggyBac transposon system by the ectopic expression of lineage-specific transcription factors.
10:02
piggyBac Transposon System Modification of Primary Human T Cells
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Cited by 17 •
2012
We describe a method to genetically modify primary human T cells with a transgene using the non-viral piggyBac transposon system. T cells modified to using the piggyBac transposon system exhibit stable transgene expression.
02:52
Isolation of Gram-Negative Bacteria with Genomic Transposon Insertions
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2025
Source: Kazi, M. I., et. al., Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing. J. Vis. Exp. (2020)This video demonstrates the selection, quantification, and preservation of Gram-negative recipient bacteria carrying transposon insertions based on kanamycin resistance.
01:24
Transposons
0 Views •
2025
Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
FAQs
Equal-length occupancy makes each phase experience the same set of physical environments over the route. Without this averaging, a conductor that remains closer to another phase or to ground would experience different magnetic coupling, inductance, and capacitance. The equal-length arrangement therefore reduces phase-to-phase electrical differences and supports more balanced three-phase transmission behavior.
The arrangement averages differences in magnetic coupling, inductance, and capacitance among the phases. These differences arise from unequal conductor spacing relative to neighboring conductors and ground. By exposing every conductor to each position for the same distance, the line reduces the persistent positional bias that would otherwise make the phases electrically dissimilar.
With fixed positions, differences in spacing can remain associated with the same phase along the route, producing greater voltage and current asymmetry. Transposition distributes those positional effects among all phases instead. This balancing also limits unwanted interference and gives engineers a more representative basis for analyzing the electrical behavior of the transmission circuit.
Conductors are shifted between their physical positions at designated points along the transmission route. The shifts are arranged so that, over the complete route, every conductor occupies each position for an equal length. This planned sequence averages the effects of spacing from the other conductors and from ground rather than allowing one phase to retain a single position.
It is particularly relevant when engineers assess long overhead three-phase transmission circuits, where differences in conductor geometry can affect electrical balance over the route. The arrangement supports stable three-phase operation by reducing voltage and current asymmetry. It also helps engineers build transmission-line models that more accurately represent the balanced behavior expected from the physical circuit.
Transposition improves model accuracy by averaging geometric effects that would otherwise differ from phase to phase. A model can therefore represent the line using more balanced phase properties instead of treating each persistent conductor position as a separate source of unequal coupling, inductance, or capacitance. This supports more reliable analysis of long overhead transmission circuits.