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Related Concept Videos

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Renal Tubule and Collecting Duct

The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
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The kidneys maintain homeostasis through filtration, reabsorption, and secretion. Tubular reabsorption and secretion are crucial in forming urine and regulating electrolytes, water balance, and waste elimination.Tubular Reabsorption and Secretion ProcessesTubular reabsorption is the process that reclaims essential substances such as electrolytes, glucose, amino acids, and water from the glomerular filtrate back into the bloodstream. This is achieved through passive and active transport...
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Renal Regulation of Acid-Base Balance01:29

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Related Experiment Video

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Tetraspan proteins: regulators of renal structure and function.

Michael J Caplan1, Erik-Jan Kamsteeg, Amy Duffield

  • 1Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut 06525-8026, USA. Michael.caplan@yale.edu

Current Opinion in Nephrology and Hypertension
|June 15, 2007
PubMed
Summary

Tetraspans are a protein family regulating cell signaling and trafficking. Their interactions impact kidney function, cell adhesion, and tissue development, revealing broad physiological significance.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Nephrology

Background:

  • Tetraspan proteins are widely expressed but their functions are not fully understood.
  • Emerging evidence suggests tetraspans play key roles in physiological processes through interactions with other membrane proteins.

Purpose of the Study:

  • This review focuses on specific tetraspan complexes.
  • The review highlights the relevance of tetraspans to epithelial cells and kidney function.

Main Methods:

  • Literature review of tetraspan protein interactions.
  • Analysis of tetraspan roles in cellular signaling and trafficking.
  • Examination of tetraspan impact on renal tissue and ion transport.

Main Results:

  • Tetraspans modulate signaling and trafficking of partner proteins.
  • Tetraspan-integrin complexes influence cell adhesion and mobility.
  • Tetraspan interactions affect renal ion transporter function and localization.

Conclusions:

  • Tetraspans represent a novel class of proteins with significant regulatory capacity.
  • Tetraspans alter the cell biological and functional properties of membrane protein partners.
  • These alterations have wide-ranging and important physiological implications.