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Molecular cloning of region-specific chorion-encoding RNA sequences
Summary
Researchers created a silkmoth follicle gene library to study chorion protein production. This research identifies specific genes responsible for producing chorion proteins E1 and E2 in silkmoths.
Area of Science:
- Molecular biology
- Developmental biology
- Entomology
Background:
- Silkmoth follicle development involves the synthesis of chorion proteins.
- Regionalized gene expression controls protein production during specific developmental periods.
Purpose of the Study:
- To construct a cDNA library from silkmoth follicle poly(A)+ RNA.
- To identify and characterize genes encoding very-late-period chorion proteins.
Main Methods:
- cDNA library construction from silkmoth follicle poly(A)+ RNA.
- Differential hybridization to identify region-specific clones.
- Hybrid-selected translation and antibody precipitation for gene identification.
Main Results:
- Two homology groups of clone DNAs were identified.
- These groups correspond to sequences encoding chorion proteins E1 and E2.
- Regionalized synthesis of chorion proteins was confirmed at the nucleic acid level.
Conclusions:
- The study provides molecular tools to investigate the control of regionalized chorion protein synthesis.
- This research facilitates the study of gene regulation in silkmoth development.