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Biochemia Azot > Reakcje > Flashcards

Reakcje Flashcards

1
Q

Deaminacja oksydacyjna

A

aminokwas + FMN + H2O -> ketokwas + FMNH2 + NH4+

E - oksydaza L-aminokwasów

albo

glutaminian + NAD(P)+ + H2O -> NH4+ + alfa-ketoglutaran + NAD(P)H + H+

E - degydrogenaza glutaminianowa

Efektory allosteryczne:

  • do glutaminianu - ATP i GTP
  • do alfa-ketoglutaranu - ADP i GDP
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2
Q

Transaminacja

A

aminokwas + ketokwas -> aminokwas + ketokwas

E - aminotransferaza

Kofaktor - PLP

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3
Q

Synteza karbamoilofosforanu

A

CO2 + NH4+ + 2ATP -> karbamoilofosforan + 2ADP + Pi

E - syntetaza karbamoilofosforanowa I

Aktywator - N-acetyloglutaminian

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4
Q

Synteza glutaminy

A

glutaminian + ATP + NH3 -> glutamina + ADP + Pi

E - syntetaza glutaminy

Aktywator - alfa-ketoglutaran

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5
Q

Synteza asparaginy

A

asparaginian + ATP + glutamina -> asparagina + glutaminian + AMP + PP

E - synyetaza asparaginy

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6
Q

3-fosfoglicerynian -> 3-fosfohydroksypirogronian

A

E - dehydrogenaza fosfoglicerynianowa

NAD+

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7
Q

3-fosfohydroksypirogronian -> 3-fosfoseryna

A

E - aminotransferaza

glutaminian

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8
Q

3-fosfoseryna -> seryna

A

defosforylacja

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9
Q

seryna -> glicyna

A

E - hydroksymetylotransferaza serynowa

H4folian -> N5,N10-metylenoH4folian

PLP

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10
Q

homocysteina -> metionina

A

E - syntaza metioninowa (metylotransferaza homocysteinowa)

N5-CH2-H4folian -> H4folian

udział B12

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11
Q

metionina -> S-adenozylometionina (SAM)

A

E - transferaza adenozylo-metioninowa

ATP

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12
Q

homocysteina + seryna -> cystationina

A

E - syntaza cystationiny

PLP

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13
Q

cystationina -> cysteina + alfa-ketomaślan

A

E - liaza cystationiny

PLP

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14
Q

guanidynooctan -> kreatyna

A

E - metylotransferaza

donor CH3 - SAM

guanidynooctan z glicyny i argininy

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15
Q

kreatyna -> fosfokreatyna

A

E - kinaza kreatynowa

ATP -> ADP

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16
Q

fenyloalanina -> tyrozyna

A

E - hydroksylaza fenyloalaniny

tetrahydrobiopteryna -> dihydrobiopteryna

regeneracja pteryny - NADPH + H+ (reduktaza dihydrobiopteryny)

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17
Q

fenyloalanina -> fenylopirogronian

A

E - aminotransferaza fenyloalaninowa

pirogronian -> alanina

PLP

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18
Q

tyrozyna -> melaniny

A

E - tyrozynaza

L-DOPA po drodze

19
Q

tyrozyna -> L-DOPA

A

E - hydroksylaza tyrozyny

H4biopteryna -> H2biopteryna

NADPH + H+

20
Q

L-DOPA -> dopamina

A

E - dekarboksylaza L-DOPY

PLP

21
Q

dopamina -> noradrenalina

A

E - beta-oksydaza dopaminowa (hydroksylaza dopaminy)

wit. C, Cu2+,

22
Q

noradrenalina -> adrenalina

A

E - N-metylotransferaza fenyloetanoloaminowa

SAM

23
Q

tryptofan -> serotonina

A
  • E - monoksygenaza
  • H4biopteryna
  • do 5-hydroksytryptofanu

potem

  • E - dekarboksylaza
  • PLP
  • do serotoniny
24
Q

serotonina -> melatonina

A

acetylo-CoA, SAM

związek pośredni - N-acetyloserotonina

25
Q

Synteza aminolewulinianu

A

bursztynylo-CoA + glicyna -> aminolewulinian

E - syntaza aminolewulinianu

PLP

Hamowanie - hem

26
Q

2 aminolewulinian -> porfobilinogen

A

E - syntaza porfobilinogenu

Hamowanie - ołów

27
Q

protoporfiryna -> hem

A

E - ferochelataza

Fe2+

Hamowanie - ołów

28
Q

rybozo-5-fosforan -> 5-fosforybozylo-1-pirofosforan (PRPP)

A

E - pirofosfokinaza R-5-P

ATP -> AMP

29
Q

PRPP -> 5-fosforybozylo-1-amina

A

E - amidotransferaza PRPP

glutamina -> glutaminian

Inhibitory - AMP i GMP

30
Q

Puryny - włączenie glicyny

A

ATP -> ADP + Pi

31
Q

Puryny - formylacja I

A

N10-formyloH4folian -> H4folian

32
Q

Puryny - druga glutamina i zamknięcie pierścienia

A

glutamina + ATP -> glutaminian + ADP + Pi

ATP -> ADP + Pi

33
Q

Puryny - karboksylacja i przemieszczenie

A

CO2 z powietrza

ATP

34
Q

Puryny - przyłączenie asparaginianu

A

asparaginian -> fumaran

ATP

35
Q

Puryny - formylacja II

A

N10-formyloH4folian

36
Q

IMP -> AMP

A

asparaginian + GTP -> fumaran + GDP + Pi

Hamowanie - AMP

37
Q

IMP -> GMP

A

NAD+ + glutamina + ATP +> NADH + H+ + glutaminian + ADP + Pi

38
Q

Puryny - droga oszczędnościowa

A

PRPP + adenina -> AMP + PPi

E - fosforybozylotransferaza adeninowa

PRPP + guanina -> GMP + PPi

PRPP + hipoksantyna -> IMP + PPi

E - fosforybozylotransferaza hipoksantynowo-guaninowa

39
Q

hipoksantyna -> kwas moczowy

A

E - oksydaza ksantynowa

40
Q

karbamoilofosforan + asparaginian -> N-karbamoiloasparaginian

A

E - transferaza karbamoiolasparaginianowa

Hamowanie - CTP

Aktywowanie - ATP

41
Q

orotan -> UTP

A

ciąg reakcji

użycie PRPP oraz dwóch ATP

pośredni - OMP

42
Q

UTP -> CTP

A

glutamina + ATP -> glutaminian + ADP + Pi

Hamowanie - CTP

Aktywowanie - GTP

43
Q

NDP -> dNDP

A

E - reduktaza rybonukleotydów

tioredoksyna aktywuje reduktazę

reduktaza tioredoksyny aktywuję tioredoksynę

aktywacja bezpośrednio z NADPH + H+

44
Q

dUMP -> dTMP

A

E - syntaza tymidynalowa

N5,N10-metyleno-H4folian -> H4folian

Biochemia Azot (1 decks)

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