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Genetic polymorphism of human phosphoglycolate phosphatase (PGP)
Annals of Human Genetics
|October 1, 1978
Summary
Researchers developed a method to detect phosphoglycolate phosphatase (PGP) isozymes in human tissues. Six common types were identified, determined by three alleles at an autosomal locus, suggesting PGP is a dimeric enzyme.
Area of Science:
- Biochemistry
- Human Genetics
- Enzymology
Background:
- Phosphoglycolate phosphatase (PGP) is an enzyme involved in cellular metabolism.
- Understanding PGP isozyme variation is crucial for human genetic studies.
Purpose of the Study:
- To develop a method for detecting phosphoglycolate phosphatase (PGP) isozymes.
- To characterize the electrophoretic patterns and genetic basis of PGP isozymes in human tissues.
Main Methods:
- Starch-gel electrophoresis was employed for the detection of PGP isozymes.
- Human tissues, including red cells, lymphocytes, and fibroblasts, were analyzed.
- Family studies were conducted to determine the genetic inheritance patterns.
Main Results:
- A reliable method for detecting PGP isozymes across various human tissues was established.
- Highest PGP activities were observed in skeletal and cardiac muscle.
- Six common electrophoretic types of PGP were identified, controlled by three autosomal alleles (PGP1, PGP2, PGP3).
- Gene frequencies in Europeans were PGP1 (0.826), PGP2 (0.129), and PGP3 (0.045).
- Heterozygote patterns indicated PGP is a dimeric enzyme.
Conclusions:
- PGP isozymes can be readily detected in all human tissues.
- The genetic variation of PGP is determined by three autosomal alleles.
- PGP functions as a dimeric enzyme, with significant implications for human population genetics and enzyme research.