atp production & utilization ppt

Contents –
INTRODUTION
PATHWAY OF ATP PRODUCTION
GLYCOLYSIS
PHASES
CITRIC ACID CYCLE

UTILIZATLION
ASSEMBLY OF MACROMOLECULES
ATP PROVIDES ENERGY BY GROUP TRANSFER
ATP ENERGIES ACTIVE TRANSPORT AND GROUP TRANSFER
GLOWING REPORTS OF ATP
CONCLUSION
REFERENCE

1. By
KAUSHAL KUMAR SAHU
Assistant Professor (Ad Hoc)
Department of Biotechnology
Govt. Digvijay Autonomous P. G. College
Raj-Nandgaon ( C. G. )

2. Contents–
•INTRODUTION
•PATHWAY OF ATP PRODUCTION
•GLYCOLYSIS
PHASES
•CITRIC ACID CYCLE
•UTILIZATLION
•ASSEMBLY OF MACROMOLECULES
•ATP PROVIDES ENERGY BY GROUP TRANSFER
•ATP ENERGIES ACTIVE TRANSPORT AND GROUP
TRANSFER
•GLOWING REPORTS OF ATP
•CONCLUSION
•REFERENCE

3. Cellsisothermalsystems—theyfunctionatessentiallyconstant
temperature(theyalsofunctionatconstantpressure).
Heatflowisnotasourceofenergyforcells,becauseheatcan
doworkonlyasitpassestoazoneorobjectatalower
temperatureheterotrophiccellsacquirefreeenergyfrom
nutrientmoleculeandphotosyntheticcellsacquireitfrom
absorbedsolarradiation
BothkindcellstransformfreeenergyintoATPandother
energy-richcompoundscapableofprovidingenergyfor
biologicalworkatconstanttemperature.
Glucoseoccupiesacentralpositioninthemetabolismofplants,
animals,andmanymicroorganisms.
INTRODUCTION

4. Pathway of ATP
production
GLYCOLYSIS CITRIC ACID CYCLE
Glycolysis is the set of
reactions that converts
glucose into pyruvate. The
reactions of glycolysis
take place in the cytosol.
The Conversion Of
Pyruvate to acetyl groups, &
entry of these groups into
citric acid is called
tricarboxylic acid cycle in
the cytosol.

5. GLYCOLYSIS
In the first stage:--
glucose is converted into fructose 1,6-bisphosphate
by a phosphorylation, an isomerization, and a
second phosphorylation reaction.
ATP consumed:-Two molecules.
In the second stage:--
fructose 1,6-bisphosphate is cleaved by aldolase into
di hydroxy acetone phosphate and glyceraldehyde
3-phosphate, which are readily inter convertible
In the third stage:--
Glyceraldehyde 3-phosphate is oxidized and
phosphorylated to form 1,3-bisphosphoglycerate.
This molecule transfers a phosphoryl group to ADP
to form ATP and 3-phosphoglycerate.

6. Glycolysis pathway

8. CITRIC ACID CYCLE
In this cycle CO2 is released by decarboxylation and H+
Ions after dehydrogenation are liberated.
2 molecules are formed from one molecule of glucose.
In the cycle 10 H
+
and 3 molecules of CO
2
are formed from
pyruvic acid, and in complete cycle 20 H
+
ions and 6CO
2
are
formed.
4H+ in glycolysis, so total of 20+4=24 H
+
is are formed.
All the H+ are taken by FAD, NAD, CYTOCHROME.

9. CITRIC ACID CYCLE

10. •Table showing ATP Yield from Complete Oxidation ofGlucose

11. Whensimpleprecursorsareassembledintohigh
molecularweightpolymerswithdefinedsequences
(DNA,RNA,proteins),energyisrequiredbothfor
thecondensationofmonomericunitsandforthe
creationoforderedsequences.
TheprecursorsforDNAandRNAsynthesisare
nucleosidetriphosphates,andpolymerizationis
accompaniedbycleavageofthephosphorylanhydride
linkagebetweentheαandβphosphates,withtherelease
ofPi.
UTILIZATON OF ATP
Assembly of Informational MacromoleculesRequires Energy

12. ATP PROVIDES
ENERGY
BY GROUP
TRANSFER

13. Phosphoryl Group Transfers and ATP
Heterotrophic cells obtain free energy in a chemical
form by the catabolism of nutrient molecules, and
they use that energy to make ATP from ADP and Pi.
ATP then donates some of its chemical energy to
endergonic processes such as the synthesis of
metabolic intermediates and macromolecules from
smaller precursors, the transport of substances
across membranes against concentration gradients,
and mechanical motion.

14. In the contractile system of skeletal muscle cells,
myosin and actin are specialized to transducer the
chemical energy of ATP into motion.
ATP can supply the energy for transporting an ion or a
molecule across a membrane into another aqueous
compartment where its concentration is higher.
Transport processes are major consumers of energy; in
human kidney and brain, for example, as much as two-
thirds of the energy consumed at rest is used to pump
Na
+
and K
+
across plasma membranes via the Na
+ _
K
+
ATPase.
ATPEnergizesActiveTransportandMuscle
Contraction

15. Inthecontractilesystemofskeletalmusclecells,
myosinandactinarespecializedtotransducerthe
chemicalATPase.
ThetransportofNa
+
andK
+
isdrivenbycyclic
phosphorylationanddephosphorylationoftheprotein,
withATPasthephosphorylgroupdonor.
ATP binds tightly but non-covalently to one conformation of
myosin, holding the protein in that conformation.
When myosin catalyzes the hydrolysis of its bound ATP, the
ADP and Pi dissociate from the protein, allowing relaxing into
a second conformation until another molecule of ATP binds.

16. All oxidative steps in the degradation of carbohydrates, fats , and
amino acids converge at this final stage of cellular respiration, in
which the energy of oxidation drives the synthesis of ATP.
Oxidative phosphorylation produces most of the ATP made in
aerobic cells. Complete oxidation of a molecule of glucose to
CO2 yields 36 molecules of ATP.

17. Books-
1. LEHNIGER PRINCIPLES OF BIOCHEMISTRY BY
NELSON AND COX. 5
th
EDITION
2. BIOCHEMISTRY BY LUBERT STRYER-
4
th
EDITION.
Web help-
•www.wikipedia.com
•www.nature.com
REFERENCES