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secretion

File:Secretory_mechanism.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ84230· pop 42· linked from 667 articles

Also known as GO:0046903, secretory, secretory process, Secretory Pathway

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Key facts

Protein family.Symbol
T4SS
Protein family.Name
T4SS
Protein family.image
Image:T4SS.svg
Protein family.caption
Type IV secretion system
Protein family.Pfam
PF07996
Protein family.InterPro
IPR012991
Protein family.SCOP
1gl7
Protein family.TCDB
3.A.7
Protein family.OPM family
215
Protein family.OPM protein
3jqo

via Wikipedia infobox

Research

10,081,185 papers

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Wikidata facts

Image
USMC-04952.jpg
Show 2 more facts
Commons category
Secretory vesicles
Sources (4)

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~13 min read

Article

23 sections
Contents
  • In eukaryotic cells
  • Mechanism
  • Nonclassical secretion
  • In human tissues
  • In gram-negative bacteria
  • {{anchor|T1SS}}Type I secretion system (T1SS or TOSS)
  • {{anchor|T2SS}}Type II secretion system (T2SS)
  • Type III secretion system (T3SS or TTSS)
  • {{anchor|T4SS}}Type IV secretion system (T4SS or TFSS)
  • Function
  • Structure
  • Interactions
  • {{anchor|T5SS}}Type V secretion system (T5SS)
  • Type VI secretion system (T6SS)
  • Type VII secretion system (T7SS)
  • Type VIII secretion system (T8SS)
  • Type IX secretion system (T9SS)
  • Release of outer membrane vesicles
  • In gram-positive bacteria
  • See also
  • References
  • Further reading
  • External links

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Secretion is the movement of material from one point to another, such as a secreted chemical substance from a cell or gland. In contrast, excretion is the removal of certain substances or waste products from a cell or organism. The classical mechanism of cell secretion is via secretory portals at the plasma membrane called porosomes. Porosomes are permanent cup-shaped lipoprotein structures embedded in the cell membrane, where secretory vesicles transiently dock and fuse to release intra-vesicular contents from the cell.

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