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Protein turnover. Biosynthesis of a mino acids Léránt István.

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Presentation on theme: "Protein turnover. Biosynthesis of a mino acids Léránt István."— Presentation transcript:

1 Protein turnover. Biosynthesis of a mino acids Léránt István

2 Biosynthesis of amino acids N – NH 4 + C – glycolysis, PPP, citric acid cycle L-amino acid / D –amino acid Proteinog e n amino acids 20 (22) Essential amino acids Non essential amino acids

3 NADPH – L-Glutam a t e

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5 Glutamine synthetase

6 Synthesis of amino acids Origin of C Intermedier of glycolysis Intermedier of PPP I ntermedier of citric acid cycle

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8 BIOSYNTHESIS OF AMINO ACIDS al ph a-keto acid  al ph a-amino acid Asp Ala Glu

9 SYNTHESIS OF AMINO ACIDS Asp Ala Glu

10 SYNTHESIS OF AMINO ACIDS Transamination Deamination Decarboxylation Glycogen-glucose PLP – Vitamin B 6

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12 SYNTHESIS OF AMINO ACIDS ProlineArginine Glutamate Glutamate-  -semialdehyde Proline Arginine

13 SYNTHESIS OF AMINO ACIDS ProlinArginin Glutamate Glutamate-  -semialdehyde Proline Ornitine Arginine

14 SYNTHESIS OF AMINO ACIDS Ser Glycolysis intermedier: 3-P-glycerate Transamination Dephosphorylation Ser: precursor of Gly & Cys

15 SYNTHESIS OF AMINO ACIDS Ser Ser: precursor of Gly & Cys SerGly

16 SYNTHESIS OF AMINO ACIDS Ser Ser: precursor of Gly & Cys Ser + homocysteine (Met) Cystationine Alpha-ketobutyrate + cysteine

17 FOLIC ACID – C1 Folium Spinach 15 mg / adults Mainly - liver Vitamin B9, Vitamin M Vitamin B9 deficiency megaloblastic anaemia – Neurological symptoms peripherial neuropathy myelopathy – vegetative disturbance psychiatric disturbance – depression – insomnia – irritability – forgetfulness

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