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PANTOTHENIC ACID AND THE UTILIZATION OF GLUCOSE BY LIVING AND CELL-FREE SYSTEMS.

P C Teague¹, R J Williams

¹Department of Chemistry, The University of Texas, Austin.

The Journal of General Physiology

|October 30, 2009

Summary

Pantothenic acid did not impact glucose fermentation or glycolysis in yeast and chick tissues. However, yeast cells did bind pantothenic acid during fermentation.

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Area of Science:

Biochemistry
Cell Biology
Nutritional Science

Background:

Pantothenic acid (vitamin B5) is crucial for cellular metabolism.
Its role in glucose fermentation and glycolysis requires further elucidation.
Previous studies suggest potential involvement in yeast and animal tissue metabolic pathways.

Purpose of the Study:

To investigate the effect of pantothenic acid on glucose fermentation in yeast.
To determine pantothenic acid's influence on glucose phosphorylation and pyruvic acid decarboxylation.
To assess pantothenic acid's impact on glycolysis in deficient chick tissues.

Main Methods:

Experiments involved yeast maceration juice (dialyzed and acetone-precipitated) with added pantothenic acid.
Glucose fermentation rates were measured with and without pantothenic acid.
Glycolysis assays were performed on homogenized deficient chick tissues.

Main Results:

Pantothenic acid addition showed no significant effect on glucose fermentation by yeast maceration juice.
The rate of glucose phosphorylation and pyruvic acid decarboxylation remained unaffected by pantothenic acid.
Pantothenic acid did not alter the rate of glycolysis in deficient chick tissues.
A binding of pantothenic acid by yeast cells was observed during fermentation.

Conclusions:

Pantothenic acid does not directly accelerate glucose fermentation or glycolysis in the studied systems.
Yeast cells exhibit a capacity to bind pantothenic acid during fermentation.
Further research is needed to understand the specific role and mechanisms of pantothenic acid binding in yeast.