Esterase D polymorphism in Chinese and Japanese.

Area of Science:

• Population genetics
• Biochemistry
• Human genetics

Background:

• Esterase D (EsD) is a polymorphic enzyme found in human red blood cells.
• Understanding EsD gene frequencies is crucial for population genetics and forensic science.

Purpose of the Study:

• To determine Esterase D phenotypes in Chinese and Japanese populations residing in the San Francisco area.
• To calculate the EsD1 gene frequencies within these specific ethnic groups.

Main Methods:

• Phenotyping of Esterase D was performed using established biochemical assays.
• Gene frequencies were calculated based on observed phenotype distributions.

Main Results:

• The EsD1 gene frequency was determined to be 0.612 for the Chinese population.
• The EsD1 gene frequency was determined to be 0.582 for the Japanese population.

Conclusions:

• The study provides baseline data on Esterase D gene frequencies for Chinese and Japanese populations in the San Francisco area.
• These findings contribute to the genetic diversity data for East Asian populations in the United States.