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Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
Published on: April 2, 2018
ELECTROPHORESIS OF ANTERIOR PITUITARY PROTEINS
R A Shipley1, K G Stern, A White
1Laboratory of Physiological Chemistry, Yale University School of Medicine, New Haven.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Electrophoresis analysis reveals multiple proteins in pituitary extracts and confirms crystalline prolactin
Area of Science:
- Biochemistry
- Protein Chemistry
- Analytical Chemistry
Background:
- Pituitary extracts contain complex protein mixtures.
- Understanding protein composition is crucial for biochemical research.
- Electrophoretic methods are vital for protein analysis.
Purpose of the Study:
- To determine the number and homogeneity of proteins in pituitary extracts.
- To characterize electrophoretic mobility of protein components.
- To assess the purity and stability of crystalline prolactin.
Main Methods:
- Utilized the moving boundary electrophoresis technique.
- Employed Tiselius's method with Toepler's schlieren optical observation.
- Analyzed crude pituitary extracts, purified fractions, and prolactin solutions.
Main Results:
- Identified multiple protein components in crude pituitary extracts.
- Electrophoretic analysis monitored the removal of inert proteins during purification.
- Fresh crystalline prolactin showed high homogeneity; aged solutions formed a second component.
Conclusions:
- Moving boundary electrophoresis is effective for analyzing pituitary protein complexity.
- Purification procedures successfully reduced inert protein content.
- Crystalline prolactin is electrochemically homogeneous when fresh but denatures upon storage.
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