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Related Concept Videos

Pharmaceutical Equivalents01:26

Pharmaceutical Equivalents

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As defined by regulatory standards, pharmaceutical equivalents require generic drug products to have identical dosage forms and chemically identical active pharmaceutical ingredients (APIs). They must adhere to compendial or applicable standards for potency, content uniformity, disintegration times, and dissolution rates. In the case of modified-release dosage forms, variations in drug content are permissible as long as the delivered amount remains consistent with the innovator drug product.
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Equivalent Capacitance01:19

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Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
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From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Master Transcription Regulators

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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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Related Experiment Video

Updated: Jan 24, 2026

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1
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Using equivalence class counts for fast and accurate testing of differential transcript usage.

Marek Cmero1, Nadia M Davidson1,2, Alicia Oshlack1,2

  • 1Murdoch Childrens Research Institute, Parkville, Victoria, 3052, Australia.

F1000Research
|June 4, 2019
PubMed
Summary
This summary is machine-generated.

Equivalence class counts (ECCs) offer a faster and equally sensitive method for differential transcript usage (DTU) analysis compared to traditional exon-level counts. This approach leverages pseudo-aligners for efficient transcriptome analysis.

Keywords:
DEXSeqKallistoRNA-seqSalmondifferential transcript usageequivalence classpseudo-alignmenttranscript compatibility class

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Genomics

Background:

  • RNA sequencing (RNA-seq) allows detailed transcriptome analysis, including differential gene expression and differential transcript usage (DTU).
  • Traditional DTU methods using exon counts face challenges with read ambiguity and require genome alignment.
  • Emerging methods use transcript quantification, but some exhibit lower sensitivity for DTU detection.

Purpose of the Study:

  • To evaluate the effectiveness of using equivalence class counts (ECCs) for differential transcript usage (DTU) analysis.
  • To compare the sensitivity and efficiency of ECC-based DTU detection against traditional exon-level methods.

Main Methods:

  • Utilized equivalence class counts (ECCs) derived from pseudo-aligners for DTU analysis.
  • Applied existing count-based DTU detection methods to ECCs.
  • Validated the approach using simulated human and Drosophila data, and a real-world dataset.

Main Results:

  • ECCs demonstrated comparable sensitivity and false discovery rates to exon-level counts for DTU detection.
  • ECCs can be generated significantly faster than exon counts by using pseudo-aligners.
  • The proposed method shows promise for efficient and accurate DTU analysis.

Conclusions:

  • Equivalence class counts (ECCs) are a viable and efficient alternative for differential transcript usage (DTU) analysis.
  • This approach offers a substantial speed advantage without compromising analytical sensitivity.
  • ECCs represent a natural and effective unit for conducting DTU studies.