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Related Experiment Videos

The human replacement histone H3.3B gene (H3F3B)

W Albig1, B Bramlage, K Gruber

  • 1Institut für Biochemie und Molekulare Zellbiologie, Georg-August-Universität Göttingen, Germany.

Genomics
|November 20, 1995
PubMed
Summary

Researchers identified the human H3.3B gene, a replacement histone. This gene, H3F3B, is located on chromosome 17 and differs structurally from other histone genes.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Histone Biology

Background:

  • Histone H3.3 is a replication-independent replacement histone.
  • It is encoded by two genes: H3.3A and H3.3B.
  • Understanding H3.3B gene structure and location is crucial for histone research.

Purpose of the Study:

  • To isolate and characterize the human H3.3B gene.
  • To determine the gene structure and chromosomal location of H3.3B.
  • To analyze H3.3B gene expression in human tissues and cell lines.

Main Methods:

  • cDNA library screening to isolate H3.3 cDNA.
  • Cosmid library screening to isolate the H3.3B gene.
  • Northern blot analysis for transcript detection.
  • Fluorescence in situ hybridization (FISH) for gene mapping.

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Main Results:

  • A full-size H3.3 cDNA clone was isolated from a human testicular library.
  • The human H3.3B gene was isolated and characterized, showing unique structural features.
  • H3.3B transcripts were detected in testis and HEK293 cells.
  • The H3.3B gene (H3F3B) was mapped to chromosome 17q25.

Conclusions:

  • The human H3.3B gene possesses distinct structural characteristics compared to replication-dependent histone genes.
  • Its solitary arrangement and location on chromosome 17 differ from typical histone gene clusters.
  • This study provides foundational information on the H3.3B gene, essential for further research into its function and regulation.