MALADIES NEUROPEDIATRIQUES Flashcards

1
Q

Quel type de maladie génétique est l’amyotrophie spinale infantile ?

A

Maladie autosomique recessive

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2
Q

Quel gêne est concerné dans l’ASI?

A

Le gène SMN1 (Survival Motor Neuron) qui code pour la pº SMN
La maladie résulte d’une inactivation biallelique du gène SMN1

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3
Q

A quoi se lie la protéine SMN

A

Aux pº gemin

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4
Q

Quelle structure forme pº SMN + pºgemin?

A

Le complexe SMN

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5
Q

A quoi s’associe le complexe SMN?

A

A des snRNA (small nuclear RNA)

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6
Q

Que forme le complexe SMN + snRNA

A

Des snRNP

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7
Q

Role snRNP

A

Role clé dans l épissage
Transport de certains arn
Transcription
Traduction
Formation de granule de stress

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8
Q

A quoi est corréler la sévérité de l’ASI

A

Au taux de protéine SMN fonctionnelle produite

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