47. Extracellular matrix Flashcards

1
Q

Hvilket protein findes i bredest omfang i ECM (ekstra cellulær matrix)

A

30% Kollagen

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2
Q

Hvilke kollagen giver styrke til led, ligamenter og hud?

A

Fibrillar kollagener som er:

  • I
  • II
  • III
  • V
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3
Q

Hvad er funktionen af non-fibrillar kollagener?

A

Basic komponenter i membraner, fx elastin fibronektin, lamininer og proteoglycaner

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4
Q

Hvor foregår syntesen af kollagen henne i cellen?

A

Start:
- Kollagen synthesen begynder i RER

Slut:
- Prokollagen slutter i Golgi

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5
Q

Hvad gør elastin så flexibelt?

A

Svage hydrofobe interaktioner mellem Valin sørger for flexibilitet og extensibilitet af elastin

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6
Q

Hvad kan fibrinectin og laminin bindes til?

A
  • ECM proteiner

- Proteoglycaner

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7
Q

Hvordan bestemmes strukturen af glycosaminoglycaner?

A

Cellens komponenter af Glycosyler og Sulfotransferaser

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8
Q

Hvad kan defekter af proteoglycaner føre til?

A

Mukopolysaccharidoses

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