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Презентация на тему Protein and amino acid metabolism

Содержание

Protein-rich products
Protein and amino acid metabolism Protein-rich products Essential amino acids valine, leucine, isoleucine, lysine, methionine, threonine, tryptophan, phenylalanineSemiessential amino acids arginine and histidine ProteasesSerine proteasesCysteine proteasesAspartic proteasesMetalloproteasesTreonine proteasesGlutamic proteases Active site of tripsinActive site of chymotripsin HCL secretion Pepsinogen activation The selectivity of pepsin Trypsinogen activation Activation of intestinal proteases The selectivity of peptidases Amino acid absorption Transport Catalytic cycle of GGT Conversion of amino acids under the action of intestinal microflora Proteolysis in tissues Avram Hershko,Aaron Ciechanover and Irwin RoseNobel Prize in Chemistry, 2004 Reactions of amino groupReductive deaminationHydrolytic deaminationIntramolecular deaminationurocanic acidhistidine Oxidative deamination Transamination Evaluation of transaminase activityAlanine + α-ketoglutarate  → → pyruvate + glutamateASTALT Transaminases in human tissues (U/g protein) de Ritis ratioАSТАLТ=Myocardial infarction DRr > 1,3Viral hepatitis DRr < 1 Decarboxylation thiamine pyrophosphate Decarboxylationglutamic acidγ-aminobutyric acid Oxidative deamination of biogenic aminesR-CH2-NH2 + E-FAD + H2O →R-CHO + NH3 + E-FAD⋅H2E-FAD⋅H2 Ammonia neutrralisation Urea cycle. Reactions 1, 2   NH3 + CO2 +2 ATP Urea cycle. Reaction 3Argininosuccinatesynthetase Urea cycle. Reaction 4Argininosuccinase Urea cycle. Reaction 5Rate-limiting! Kwashiorkor Hereditary disordersof Urea cycle
Слайды презентации

Слайд 2 Protein-rich products

Protein-rich products

Слайд 3 Essential amino acids
valine, leucine, isoleucine, lysine,

Essential amino acids valine, leucine, isoleucine, lysine, methionine, threonine, tryptophan, phenylalanineSemiessential amino acids arginine and histidine

methionine, threonine, tryptophan, phenylalanine
Semiessential amino acids
arginine and

histidine

Слайд 4 Proteases
Serine proteases
Cysteine proteases
Aspartic proteases
Metalloproteases
Treonine proteases
Glutamic proteases

ProteasesSerine proteasesCysteine proteasesAspartic proteasesMetalloproteasesTreonine proteasesGlutamic proteases

Слайд 5 Active site of tripsin
Active site of chymotripsin

Active site of tripsinActive site of chymotripsin

Слайд 6 HCL secretion

HCL secretion

Слайд 7 Pepsinogen activation

Pepsinogen activation

Слайд 8 The selectivity of pepsin

The selectivity of pepsin

Слайд 9 Trypsinogen activation

Trypsinogen activation

Слайд 10 Activation of intestinal proteases

Activation of intestinal proteases

Слайд 11 The selectivity of peptidases

The selectivity of peptidases

Слайд 12 Amino acid absorption

Amino acid absorption

Слайд 13 Transport Catalytic cycle of GGT

Transport Catalytic cycle of GGT

Слайд 14 Conversion of amino acids under the action of intestinal microflora

Conversion of amino acids under the action of intestinal microflora

Слайд 15 Proteolysis in tissues

Proteolysis in tissues

Слайд 16 Avram Hershko,
Aaron Ciechanover and Irwin Rose
Nobel Prize in

Avram Hershko,Aaron Ciechanover and Irwin RoseNobel Prize in Chemistry, 2004

Chemistry, 2004


Слайд 17 Reactions of amino group
Reductive deamination
Hydrolytic deamination
Intramolecular deamination
urocanic acid
histidine

Reactions of amino groupReductive deaminationHydrolytic deaminationIntramolecular deaminationurocanic acidhistidine

Слайд 18 Oxidative deamination

Oxidative deamination

Слайд 19 Transamination

Transamination

Слайд 20 Evaluation of transaminase activity
Alanine + α-ketoglutarate  →
→ pyruvate + glutamate
AST
ALT

Evaluation of transaminase activityAlanine + α-ketoglutarate  → → pyruvate + glutamateASTALT

Слайд 21 Transaminases in human tissues (U/g protein)

Transaminases in human tissues (U/g protein)

Слайд 22 de Ritis ratio
АSТ
АLТ
=
Myocardial infarction DRr > 1,3

Viral hepatitis

de Ritis ratioАSТАLТ=Myocardial infarction DRr > 1,3Viral hepatitis DRr < 1

DRr < 1


Слайд 23 Decarboxylation

Decarboxylation

Слайд 24 thiamine pyrophosphate

thiamine pyrophosphate

Слайд 25 Decarboxylation
glutamic acid
γ-aminobutyric acid

Decarboxylationglutamic acidγ-aminobutyric acid

Слайд 26 Oxidative deamination of biogenic amines
R-CH2-NH2 + E-FAD + H2O →
R-CHO

Oxidative deamination of biogenic aminesR-CH2-NH2 + E-FAD + H2O →R-CHO + NH3 +

+ NH3 + E-FAD⋅H2

E-FAD⋅H2 + O2 → E-FADH2 +

H2O2


Слайд 27 Ammonia neutrralisation

Ammonia neutrralisation

Слайд 28 Urea cycle. Reactions 1, 2
NH3

Urea cycle. Reactions 1, 2  NH3 + CO2 +2 ATP

+ CO2 +2 ATP + H2O
→ H2N-CO-OPO3H2 + 2

ADP + H3PO4

Carbamoylphosphate
synthetase

Ornithine transcarbamoilase

Rate-limiting!


Слайд 29 Urea cycle. Reaction 3
Argininosuccinate
synthetase

Urea cycle. Reaction 3Argininosuccinatesynthetase

Слайд 30 Urea cycle. Reaction 4
Argininosuccinase

Urea cycle. Reaction 4Argininosuccinase

Слайд 31 Urea cycle. Reaction 5
Rate-limiting!

Urea cycle. Reaction 5Rate-limiting!

Слайд 33 Kwashiorkor

Kwashiorkor

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