Glycolyse Flashcards

0
Q

Glycolyse-Schritt 2:

A

Katalysierendes Enzym:
Glucose-6-Phosphat-Isomerase

• Isomerisierung (Strukturveränderung) von Glucose-6-Phosphat zu Fructofuranose-6-Phosphat

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1
Q

Glycolyse-Schritt 1:

A

Katalysierendes Enzym:
Hexokinase

• Übertragung einer Phosphorylgruppe von ATP auf Glucose. (Irreversibel!)

Glucose —> Glucose-6-Phosphat

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2
Q

Glycolyse-Schritt 3:

A

Katalysierendes Enzym:
Phosphofructokinase-1

• Übertragung einer zweiten Phosphorylgruppe von ATP. (Irreversibel)

Fructofuranose-6-phosphat –> Fructofuranose-1,6-bisphosphat

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3
Q

Glycolyse-Schritt 4:

A

Katalysierendes Enzym:
Aldolase

• Spaltung der C3-C4 Bindung, liefert zwei Triosephosphate.

Fructofuranose-1,6-bisphosphat –>
Dihydroxyacetonphosphat +
Glycerinaldehyd-3-phosphat

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4
Q

Glycolyse-Schritt 5:

A

Katalysierendes Enzym:
Triosephosphat-Isomerase

• Umlagerung der Triosephosphate (in 2 Glycerinaldehydphosphate)

Dihydroxyacetonphosphat —> Glycerinaldehyd-3-phosphat

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5
Q

Glycolyse-Schritt 6:

A

Enzym:
Glycerinaldehyd-3-phosphat-Dehydrogenase

• Oxidation (H-Abspaltung) und Phosphorylierung mithilfe NAD+ und 1P. Ergibt ein energiereiches Säureanhydrid.

Glycerinaldehyd-3-phosphat —> 1,3-Bisphosphoglycerat

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