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Beta Oxidation
Power Point on Beta Oxidation
57
Chemistry
Professional
09/16/2009

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Cards

Term
What is the product of CoA and ATP?
Definition
Aceyl CoA
Term
Fatty acids differ in what?
Definition
chain length
Term
Where are fatty acids degraded?
Definition
Mitochondria
Term
Acetyle CoA cannot get through what?
Definition
Inner membrane of mitochondria
Term
What shuttles the CoA through the inner membrane of mitochondria?
Definition
Carnitine
Term
What is the name of the three enzymes that works in the shuttle?
Definition
Carnitine Palmitoyl Transferases
Term
We combine fatty acid and what?
Definition
carnitine
Term
What catalyzes the bonding of acey coA to carnitine?
Definition
carnitine palmitoyl transferase I
Term
Carnitineaylcarnitine translocase does what?
Definition
gets it into the mitochondria
Term
Carnitine bonds with hydroxyl group to give what?
Definition
aceyl coA ready for beta oxidation
Term
CPT II does what?
Definition
drops the carnitine to get the fatty acid back for beta oxidation
Term
What is OH replaced by in the matrix?
Definition
O
Term
Malonlyl CoA is the precurser for what?
Definition
making fatty acids
Term
A lot of acetyl coA means what?
Definition
krebs cycle
Term
A lot of acetyl coA produces what?
Definition
malonyl CoA
Term
Malonyl coA inhibits what?
Definition
carnitie palmitoyl Transferase I.
Term
Oxidation occurs at what?
Definition
beta carbon, C-3
Term
What do we breakdown our fats into?
Definition
Acetyle CoA- krebs
FADH2 and NADH- oxidative phosph. to create ATP
Term
How many carbons are broken at a time?
Definition
2
Term
What is the only regulatory mechanism?
Definition
hormone lipase in adipose tissue
Term
Our fist product is produced from what enzyme?
Definition
Acyl CoA dehydrogenase
Term
Second reaction is what type?
Definition
hydration
Term
What is the product from step one?
Definition
FADH
Term
What is the product in step three?
Definition
NADH
Term
What is the enzyme in step 4 that cleaves SH?
Definition
beta ketothiolase
Term
What is the last product in step 4?
Definition
acetyl CoA and a shortened fatty acyl coA that is 2 carbons shorter
Term
Where does the acetyl coA and aceyl coA go?
Definition
acetyl goes to krebs and aceyl goes to another round of beta oxidation
Term
What does round one of beta oxidation start with?
Definition
Fatty acyl CoA, FAD, NAD, HS-CoA
Term
What do we get from beta oxidation?
Definition
fatty acyl CoA (2 carbons less), FADH2, NADH, acetyl CoA
Term
If we start with an even number chain of fatty acids, what happens in the last round of beta oxidation?
Definition
you get butyryl CoA which is converted to 2 acetyl CoA
Term
What is the product of beta oxidation if we start beta oxidation with an even number of chains?
Definition
2 acetyl CoA
Term
What do we get if we start with 16 carbon chain?
Definition
1. 7 acetyle coA + 2 acetyl coA
2. 7 FADH2
3. 7 NADH + H
Term
15 carbon chain?
Definition
1. 7 acetyl coA + 1 acetyl CoA + 1 succinyl CoA
2. 7 NADH + H
3. 7 FADH2
Term
What is the difference in the product of beta oxidation if you start with odd number of carbon chain instead of even?
Definition
1 acetyl coA and 1 Succinyl CoA in odd,
2 acetyl coA in even
Term
Where does beta oxid. of a very long chain of fatty acids occur?
Definition
peroxisomes
Term
What is produced from a very long chain in peroxisomes?
Definition
H2O2
Term
Long chains get degraded in _____________ into short chains which then go to ______________.
Definition
peroxisomes, mitochondria
Term
During fasting what is depleted in the liver?
Definition
oxaloacetate
Term
What causes oxaloacetate to be depleted during fasting?
Definition
gluconeogenesis
Term
What impedes the entry of acetyl CoA into krebs?
Definition
lack of oxaloacetate while fasting due to gluconeogenesis
Term
What are the three major ketones?
Definition
1. acetoacetate
2. converts to acetone
3. beta hydroxybutyrate
Term
Ketone bodies can be converted to what?
Definition
acetyl CoA for catabolism in krebs
Term
What causes the conversion of ketones back to acetyl coA?
Definition
eating carbs again
Term
How do you make ketones?
Definition
reverse the last step in beta oxid
Term
HMG CoA synthase catalyzes condensation of acetyl CoA + acetoacetyl CoA to form ?
Definition
HMG- CoA
Term
HMG CoA lyase cleaves HMG coA to yeild?
Definition
acetyle CoA and the ketone acetoacetate
Term
Saturation depends on what?
Definition
the number of double bonds
Term
fatty acids have to be what?
Definition
charged before entering beta oxid
Term
The carnitine shuttle is made up of?
Definition
CPTI and II, an carnitine-acylcarnitine translocase
Term
For every carnitine and fatty acid that comes in what goes out?
Definition
carnitine and hydroxl
Term
Beta oxidation is primarily controlled by what?
Definition
malonyl CoA and lipase
Term
If you have a lot of acetyl coA you have what?
Definition
a lot of malonyl coA
Term
A lot of malonyl coA does what?
Definition
keeps acetly coA from entering mitochondria
Term
What are the products of beta oxid?
Definition
1. FADH2
2. NOTHING
3. NADH
4. acetyle CoA and shortened fatty acid
Term
No oxaloactetate no what?
Definition
krebs cycle
Term
ketone acidosis decreaseas/increases pH?
Definition
decreases
Term
Too many ketones, breath a lot.
Definition
Kauschmals breathing
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