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
Article
23 sectionsContents
- 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.