Méthode séparation prot Flashcards

1
Q

HbS est moins acide que Hba

A

HbS possède une valine

HbA possède un acide glutamique

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2
Q

SDS

A

rupture ln non covalentes
toutes les prot ont la même confo linéaire
toutes le prot chargées (-)

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3
Q

ß-mercaptoéthanol

A

romp ponts disulfures

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4
Q

urée

A

sépare les s-u protéiques reliées par des ln non covalentes (ln hydrophobes)

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5
Q

hydrolyse acide (HCl)

A

rupture ln peptidiques

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6
Q

identification N-ter

A

chlorure de Dabsyl

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7
Q

identification C-ter

A

carboxypeptidase

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8
Q

aminopeptidase

A

droite de N-ter

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9
Q

carboxypeptidase A

A

à gauche de C-ter

sauf si dernier aa est arginine, lysine ou proline

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10
Q

trypsine

A

à droite de lysine, arginine

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11
Q

chymotrypsine

A

à droite de la tyrosine, tryptophane, phénylalanine, leucine, méthionine

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12
Q

bromide de cyanogène

A

à droite de la méthionine

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13
Q

elastase

A

à droite alanine, glycine, sérine

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14
Q

carboxypeptidase B

A

arginine, lysine

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15
Q

enzyme estomac

A

pepsine

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16
Q

enzyme pancréas

A

élastase, carboxypeptidase, trypsine, chymotrypsine

17
Q

enzyme intestins

A

aminopeptidases

18
Q

albumine

A
  • prot pI le plus bas des prot sériques
  • proximité du pôle + (pic étroit)
  • rôle capital maintien pression oncotique
  • prot de transport
19
Q

alpha1 globuline

A

anti-protéases

ex: anti-trypsine anti-chymotrypsine

20
Q

alpha2 globuline

A

prot impliquée réactions inflammatoires

ex: Haptoglonine

21
Q

beta globuline

A

ex: transferrine assurant transport fer

22
Q

gamma globuline

A

famille Ig

Ac sécrétés par plasmocytes