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Related Experiment Videos

Structure of the gene encoding human colligin-2 (CBP2)

S Ikegawa1, Y Nakamura

  • 1Laboratory of Molecular Medicine, Institute of Medical Science, University of Tokyo, Japan. sikegawa@ims.u-tokyo.ac.jp

Gene
|July 31, 1997
PubMed
Summary

Researchers characterized the human colligin-2 gene (CBP2), revealing its genomic structure and promoter region. Findings suggest CBP2 acts as a collagen chaperone involved in retinoic acid-induced differentiation.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Colligins are endoplasmic reticulum-localized, collagen-binding proteins.
  • They belong to the serine protease inhibitor superfamily and are involved in collagen biosynthesis.
  • The human colligin-2 gene (CBP2) was previously cloned and mapped to chromosome 11q13.15.

Purpose of the Study:

  • To further characterize the human colligin-2 (CBP2) gene.
  • To determine the genomic structure of the CBP2 gene.
  • To analyze the 5'-flanking sequence of the CBP2 gene.

Main Methods:

  • Genomic DNA sequencing to determine gene structure.
  • Analysis of the 5'-flanking region for regulatory elements.
  • Comparative sequence analysis with murine counterparts.

Main Results:

  • The CBP2 gene spans approximately 11 kb and comprises five exons.
  • The 5'-flanking sequence exhibits homology to the murine promoter.
  • Identified regulatory sequences including heat-shock and retinoic acid-responsive elements.

Conclusions:

  • Colligin-2 may function as a collagen-specific molecular chaperone.
  • CBP2 likely plays a role in retinoic acid-induced differentiation processes.
  • The identified regulatory elements provide insights into CBP2 gene expression control.

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