Hvad er trinnene med glycolyse?

Hvad er trinnene med glycolyse?
Anonim

Svar:

ADVARSEL. Dette er et meget langvarigt svar, fordi der er 10 trin til glykolyse.

Forklaring:

Trin 1. Fosforylering af glucose

("C" _6 "H" _12 "O" _6) _farve (rød) ("glucose") + "ATP" stackrel ("hexokinase") () "ADP" + underbrace ("C" _6 "H "_11" O "_6" P ") _ farve (rød) (" glucose 6-phosphat ") #

Trin 2. Isomerisering af glucose 6-phosphat

#underbrace ("C" _6 "H" _11 "O" _6 "P") _ farve (rød) ("glucose 6-phosphat") stackrel ("phosphoglucoisomerase") () underbrace ("C" _6 "H" _11 "O" _6 "P") _ farve (rød) ("fructose 6-phosphat") #

Trin 3. Fosforylering af fructose 6-phosphat

# underbrace ("C" _6 "H" _11 "O" _6 "P") _ farve (rød) ("fructose 6-phosphat") + "ATP" stackrel ("phosphofructokinase") "H" _10 "O" _6 "P" _2) _farve (rødt) ("fructose 1, 6-bisphosphat") + "ADP"

Trin 4. Spaltning i 3-carbonfragmenter

#underbrace ("C" _6 "H" _10 "O" _6 "P" _2) _color (rød) ("fructose 1,6-bisphosphat") stackrel ("aldolase") ("Dihydroxyacetonephosphat") + underbrace ("C" _3 "H" _ "O" _3 "P") _ farve (rød) ("glyceraldehyd-3-phosphat ") #

Trin 5. Tautomerisering af isomerer

#underbrace ("C" _3 "H" _5 "O" _3 "P") _ farve (rød) ("dihydroxyacetonphosphat") stackrel ("triosephosphatisomerase") () underbrace ("C" _3 "H" _5 "O" _3 "P") _ farve (rød) ("glyceraldehyd 3-phosphat") #

Glyceraldehyd-3-phosphat er på den glycolyse direkte vej, men dihydroxyacetonphosphat er ikke.

Enzymet triose phosphat isomerase omdanner hurtigt dihydroxyacetonphosphat til glyceraldehyd-3-phosphat, så det kan bruges til at generere # "ATP" #.

Nettoresultatet for trin 4 og 5 er

#underbrace ("C" _6 "H" _10 "O" _6 "P" _2) _color (rød) ("fructose 1,6-bisphosphat") underbrace ("2C" _3 "H" _5 "O" _3 " P ") _ farve (rød) (" glyceraldehyd 3-phosphat ") #

Trin 6. Oxidativ phosphorylering

#underbrace ("2C" _3 "H" _5 "O" _3 "P") _ farve (rød) ("glyceraldehyd 3-phosphat") + "2NAD" ^ + + "2HP" _i stak ("glyceraldehyd 3-phosphat dehydrogenase ") () underbrace (" 2C "_3" H "_4" O "_4" P "_2) _color (rødt) (" 1,3-bisphosphoglycerat ") +" 2NADH "+" 2H "

Trin 7. Formation af # "ATP" #

#underbrace ("2C" _3 "H" _4 "O" _4 "P" _2) _color (rød) ("1,3-bisphosphoglycerat") + "2ADP" stackrel ("phosphoglycerokinase") "_3" H "_5" O "_4" P ") _ farve (rødt) (" 3-phosphoglycerat ") +" 2ATP "

Trin 8. Isomerisering af 3-phosphoglycerat

# underbrace ("2C" _3 "H" _5 "O" _4 "P") _ farve (rød) ("3-phosphoglycerat") stackrel ("phosphoglyceromutase") () underbrace ("2C" _3 "H" O "_4" P ") _ farve (rød) (" 2-phosphoglycerat ") #

Trin 9. Dehydrering af 2-phosphoglycerat

#underbrace ("2C" _3 "H" _5 "O" _4 "P") _ farve (rød) ("2-phosphoglycerat") stackrel ("enolase") () underbrace ("2C" _3 "H" _3 " O "_3" P ") _ farve (rød) (" 2-phosphoenolpyruvat ") +" 2H "_2" O "#

Trin 10. Formation af # "ATP" #

#underbrace ("2C" _3 "H" _3 "O" _3 "P") _ farve (rød) ("2-phosphoenolpyruvat") + "2ADP" stackrel ("pyruvatkinase") "H" _3 "O" _3) _farve (rød) ("pyruvat") + "2ATP" #

Her er et resumé af den metaboliske vej: