bcm25 zymogens Flashcards

1
Q

zymogens

A

digestive enzymes secreted as inactive precursor zymogens

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2
Q

chymotrypsinogen

A

zymogen to digestive enzyme chymotrypsin

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3
Q

where is chymotrypin found?

A

pancreas

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4
Q

why must chymotrypsinogen be in zymogen form?

A

until it reaches digestive tract to prevent damage

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5
Q

why does zymogen have low activity?

A

due to distorted active site

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6
Q

what is chymotrypsin

A

a protease

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7
Q

what is chymotrypsins active site

A

a catalytic triad

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8
Q

why is chymotrypsin zymogen activated by

A

trypsin

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9
Q

what are proteases activated by and where

A

zymogen cascade in duodenum - 1st section of small intestine

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10
Q

trypsingogen -> trypsin

A

enteropeptidase

cleaves n terminus of trypsin

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11
Q

chymotrypsinogen-> chymotrypsin

A

trypsin

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12
Q

how does trypsin activate chymotrypsin

A

by cleaving out ser asn and arginine so isoleucine swings into active site = increase activity

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13
Q

what does trypsin to do trypsinogen?

A

cleaves out tap = trypsin activation protein to activate trypsin

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