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Isolation, sequence analysis and characterization of a cDNA encoding human chaperonin 10
J J Chen1, D J McNealy, S Dalal
1Department of Dermatology, New England Medical Center, Boston, MA 02111.
Biochimica Et Biophysica Acta
|September 13, 1994
Summary
Researchers isolated a full-length cDNA clone for chaperonin 10 (cpn10) from HeLa cells. This clone encodes a 102-amino acid protein, confirmed by immunoprecipitation and SDS-PAGE to have an 11 kDa molecular mass.
Area of Science:
- Molecular Biology
- Protein Biochemistry
Background:
- Chaperonins are essential molecular machines involved in protein folding and cellular stress responses.
- Understanding the structure and function of chaperonin 10 (cpn10) is crucial for cellular homeostasis.
Purpose of the Study:
- To isolate and characterize the full-length cDNA encoding human chaperonin 10 (cpn10).
- To determine the protein product's size and confirm its identity.
Main Methods:
- cDNA library screening using HeLa cells.
- Polymerase chain reaction (PCR) for amplification and sequencing.
- Immunoprecipitation assays.
- Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE).
Main Results:
- A full-length cDNA clone for human cpn10 was successfully isolated from a HeLa cell cDNA library.
- The cDNA sequence is 538 bp and encodes a protein of 102 amino acids.
- Immunoprecipitation and SDS-PAGE confirmed the human cpn10 protein has an apparent molecular mass of 11 kDa.
Conclusions:
- The successful isolation and characterization of the human cpn10 cDNA provide a valuable resource for further functional studies.
- The determined molecular mass of 11 kDa is consistent with known chaperonin 10 proteins.
- This study lays the groundwork for investigating the role of human cpn10 in cellular processes.