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3Glucose-6-P 3Ru5P + Gln F6P + E4P + R5P 3PG NH3 + 2 PEP + E4P + R5P + Serine Tryptophan + pyruvate + GAP + CO2.

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Presentation on theme: "3Glucose-6-P 3Ru5P + Gln F6P + E4P + R5P 3PG NH3 + 2 PEP + E4P + R5P + Serine Tryptophan + pyruvate + GAP + CO2."— Presentation transcript:

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2 3Glucose-6-P 3Ru5P + Gln F6P + E4P + R5P 3PG NH3 + 2 PEP + E4P + R5P + Serine Tryptophan + pyruvate + GAP + CO2

3 Aldolase

4 2-keto-3-deoxy-arabinoheptulosonate-7-phosphate synthase

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13 chorismate synthase

14 Phenylalanine Tyrosine
Anthranilate Chorismate Prephenate p-hydroxybenzoate p-aminobenzoate Tryptophan Nictotinamide Phenylalanine Tyrosine Tetrahydrofolate Coenzyme Q

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17 Ribose-5-phosphate Cost = 2 ATP

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26 3 glucose + 5NADP+ + 2NAD+ + 2ATP serine + glutamine --->
Tryptophan + 5NADPH + 2NADH + 2ADP + 2Pi + GAP + pyruvate + 4CO2 + glutamate glutamine costs NADPH + 2NH4+ + 2ATP GAP + glutamate + ATP + 2NADH = serine 3 glucose + 4NADP+ + 2NH4+ + 4NAD+ + ADP + Pi ---> Tryptophan + 4NADPH + 4NADH + ATP + pyruvate + 4CO2

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28 Chorismate mutase

29 prephenate

30 3 glucose + 2NAD+ + 4NADP+ + NH4+ + ATP --->
phenylalanine + R5P + 4NADPH + 2NADH + 4CO2 + ADP + Pi 3 glucose + 3NAD+ + 4NADP+ + NH4+ + ATP ---> tyrosine + R5P + 4NADPH + 3NADH + 4CO2 + ADP + Pi In animals tyrosine is made from phenylalanine by phenylalanine hydroxylase

31 Tyrosine production from phenylalanine

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34 Tryptophan: indolamine-2,3-dioxygenase

35 N-formylkynurenine formamidase

36 N10-formyl-THF synthetase
Loss of ATP! N10-formyl-THF

37 Kynurenine-3-hydroxylase (monooxygenase)

38 Kynurenine 3-hydroxykynurenine

39 Lose 1 NADPH!

40 Kynureninase

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42 So…Trp = alanine - ATP - NADPH + 3-hydroxyanthranilate
If: Ala = 13 ATP Then: Trp = 12 ATP - NADPH + 3-hydroxyanthranilate

43 3-hydroxyanthranilate dioxygenase
2-amino-3-carboxymuconate-6-semialdehyde 3-hydroxyanthranilate dioxygenase

44 If you need nictotinamide it ends here

45 Assume loss of NADH

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47 Trp = 12 ATP - 2 NADPH - (NADH?) + NADH + -ketoadipate + NH3

48 -ketoadipate dehydrogenase Same mechanism as pyruvate dehydrogenase and -ketoglutarate dehydrogenase.

49 -ketoadipate = NADH + glutaryl-CoA

50 -ketoadipate = NADH + FADH2 + glutaconyl-CoA

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53 -ketoadipate = 2 NADH + FADH2 + Acetoacetyl-CoA

54 -ketoadipate = 2 NADH + FADH2 + 2 Acetyl-CoA

55 So…Trp = 12 ATP - 2 NADPH + NH3+ -ketoadipate
If: -ketoadipate = 2 NADH + FADH2 + 2 Acetyl-CoA If: Acetyl-CoA = 3 NADH + FADH2 + GTP Then: -ketoadipate = 8 NADH + 3 FADH2 + 2 GTP Then: Trp = 12 ATP + 8 NADH + 3 FADH2 + 2 GTP - 2 NADPH + NH3 Remember malate dehydrogenase + malic enzyme converts NADH + NADP+ ---> NAD+ + NADPH So….-2 NADPH = -2 NADH Then: Trp = 12 ATP + 6 NADH + 3 FADH2 + 2 GTP + NH3 If GTP = ATP, NADH = 3 ATP FADH2 = 2 ATP and NH3 = -2 ATP Then: Trp = 36 ATP + N10-formyl-THF

56 Tyrosine and phenylalanine degradation

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62 Makes fumarate + acetoacetate at the expense of NADPH and ascorbate

63 So…Phe = fumarate + acetoacetate - NADPH - Asc + NH3 and
Tyr = fumarate + acetoacetate - Asc + NH3 If: fumarate = malate Then: Phe = malate + acetoacetate - NADPH - Asc + NH3 and Tyr = malate + acetoacetate - Asc + NH3 If: malate = pyruvate - NADH + NADPH Then: Phe = pyruvate + acetoacetate - NADH - Asc + NH3 and Tyr = pyruvate + acetoacetate - Asc + NH3 - NADH + NADPH If: acetoacetate = 2 Acetyl-CoA - ATP Then: Phe = pyruvate + 2 Acetyl-CoA - NADH - Asc + NH3 -ATP and Tyr = pyruvate + 2 Acetyl-CoA - Asc + NH3 - NADH + NADPH - ATP If: pyruvate = 4 NADH + FADH2 + GTP If: Acetyl-CoA = 3 NADH + FADH2 + GTP Then: Phe = 9 NADH + 3 FADH2 + 2 GTP - Asc + NH3 and Tyr = NH3 + 2 GTP + 3 FADH2 + 9 NADH + NADPH - Asc

64 If GTP = ATP, NADH = 3 ATP FADH2 = 2 ATP and NH3 = -2 ATP
Then: Phe = 9 NADH + 3 FADH2 + 2 GTP - Asc + NH3 and Tyr = NH3 + 2 GTP + 3 FADH2 + 9 NADH - NADPH - Asc If: Asc = - NADPH Then: Phe = 9 NADH + 3 FADH2 + 2 GTP - NADPH + NH3 and Tyr = NH3 + 2 GTP + 3 FADH2 + 9 NADH - 2 NADPH If: NADPH = NADH Then: Phe = 8 NADH + 3 FADH2 + 2 GTP + NH3 and Tyr = NH3 + 2 GTP + 3 FADH2 + 7 NADH If GTP = ATP, NADH = 3 ATP FADH2 = 2 ATP and NH3 = -2 ATP Then: Phe = 30 ATP Tyr = 27 ATP

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75 Histidine degradation
Ammonia lyase Urocanase Urocanase Urocanase Urocanase Urocanase

76 formiminotransferase
Imidazolone propionase Glutamate formiminotransferase

77 So….Histidine = glutamate + N5-formimino-THF
If: Glu = -ketoglutarate + NADPH + NH3 Then: His = -ketoglutarate + NADPH + NH3 If: -ketoglutarate = 4 NADH + 2 GTP + 2 FADH2 + NADPH Then: His = 4 NADH +2 GTP + 2 FADH2 + NADPH + NH3 If: NADH = 3 ATP GTP = ATP FADH2 = 2 ATP NH3 = -2 ATP Then: His = 16 ATP + NADPH + N5-formimino-THF

78 Amino acids as precursors for biological molecules

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