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Chapitre 5:les Immunoglobulines Flashcards

(5 cards)

1
Q

Le monomère d’immunoglobuline:

A
  • le poids moléculaire :150-180 KDa.
    *forme semblable à un Y
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2
Q

Structure générale:

A

Elle est constituée de 3 segments de taille égale reliés par une zone de jonction flexible

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3
Q

STRUCTURE:

A

Elles comportent toutes 4 chaînes polypeptidiques groupées en 2 paires de taille inégale reliées par des ponts disulfures :
-d’une part 2 chaînes lourdes dites H (Heavy)
-d’autre part 2 chaînes légères dites L(Light).

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4
Q

C’est la région C terminale de chaque chaîne lourde:

A

Qui conditionne l’activité fonctionnelle de l’anticorps.

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5
Q

5 types de chaîne lourdes:

A

1)gamma :IgG
2)alpha :IgA
3)mu:IgM
4)delta:IgD
5)epsilon:IgE

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