Shared Flashcard Set

Details

HUCM Gluconeogenesis & Glycogen Metabolism
with just a dash of swag
24
Medical
Graduate
08/12/2011

Additional Medical Flashcards

 


 

Cards

Term
Gluconeogenesis RXN
2 Pyruvate + 4ATP + 2 GTP + 2 NADH + H + 6 H2O --> ? + 4 ADP + 2 GDP + 2 NAD + 6Pi
Definition
1 Glucose
Term
NON-CARBOHYDRATE SOURCES for the net synthesis of glucose:
?, ?, amino acids, glycerol, propionyl CoA, succinyl CoA
Definition
Lactate, pyruvate
Term
Compounds which do NOT yield net synthesis of glucose: ? ?, even chain fatty acids, leucine, and lysine
Definition
Acetyl CoA
Term
All amino acids (AA) can be used to synthesize glucose except ? & ? during prolonged starvation or high protein diet
Definition
Leucine and lysine
Term
Four enzymes in GNG that circumvent the three irreversible steps in glycolysis and their subcellular location:
? ? - mitochondrial matrix
? ? - cytosol & mito matrix
? ? - cytosol
? ? - endoplasmic reticulum
Definition
Pyruvate Carboxylase
PEP Carboxykinase
Fructose 1,6-bisphosphatase
Glucose 6-phosphatase
Term
Pentose Phosphate Pathway
Oxidative:

) Glucose 6-P + 2 NADP+ -->
? + CO2 + 2 NADPH + 2 H+
Definition
Pentose 5-P
Term
Pentose phosphate Pathway
Non-oxidative
3 Pentose 5-P --> ? + 1 Triose 3-P
Definition
2 Hexose 6-P
Term
Pentose phosphate pathway is NOT IN ?
Definition
Muscle
Term
In the Pentose phosphate pathway going from 6-Phosphogluconate to Ribulose 5-phosphate is where NADPH + H is created as well as where ? is reduced
Definition
CO2
Term
What catalyzes the breakdown of glycogen?
Its cofactor is ? ?
Definition
Glycogen Phosphorylase
Pyridoxal Phosphate
Term
Going from Glycogen (n residues) to Glucose 1-phosphate + glycogen (n-1 residues) is a ? rxn and is highly regulated
Definition
Irreversible
Term
In muscle glycogenolysis is to provide energy for ? ?
Definition
muscle contraction
Term
Glycogen synthase requires a primer which is ?
Definition
Glycogenin
Term
Glycogenin catalyzes the addition of ? glucose residues from UDP-glucose in an autoglycosylation
Definition
8
Term
What causes the increase of solubility of glycogen and increases the rate of synthesis and degradation
Definition
Branching
Term
The addition of one glucose residue to glycogen uses ? ATP equivalents.
Definition
2
Term
High blood glucose, through ?, stimulates glycogenesis and inhibits ? in liver and muscles
Definition
insulin
glycogenolysis
Term
Glycogenesis is regulated by ?
Definition
glycogen synthase
Term
Glycogenolysis is regulated by ? ?
Definition
glycogen phosphorylase
Term
Protein kinase A and phosphorylase kinase activate ? ? and inactivate ? ? by phosphorylation
Definition
glycogen phosphorylase
glycogen synthase
Term
? ? ? inactivates glycogen phosphorylase and activates glycogen synthase
Definition
Protein phosphate 1 (PP1)
Term
? ? ? ? is the glucose sensor (receptor)
Definition
Liver glycogen phosphorylase a
Term
? allosterically inhibits the liver phosphorylase a (more active phosphorylated form)
Definition
Glucose
Term
? ? ? ? (less active dephosphorylated form) is allosterically activated by AMP (NOT cAMP)
Definition
Muscle glycogen phosphorylase b
Supporting users have an ad free experience!