Structure of interphase chromosomes in the nuclei of Drosophila cells

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Abstract

Fluorescent images of interphase chromatin structures and chromosome structures isolated from reversibly permeable Drosophila cells were analyzed. Decondensed chromatin in early S phase (2.0-2.5 C-value) consisted of a veil-like fibrillary network. Fibrillar chromatin formed rodlets later in the early S phase (2.5-2.75 C). Drosophila chromosomes contain several smaller subunits called rodlets. Fibrillar chromatin turned to chromatin ribbon and the early mid-S-phase globular chromosomes (2.75-3.0 C), then to opened fibrous globular forms later in the mid-S-phase (3.0-3.25 C), to late-S-phase supercoiled ribbons (3.25-3.5 C), end-S-phase elongated prechromosomes (3.5-3.75 C), bent and linear chromosomes (3.75-4.0 C). Early-S phase chromatin fibrils in the nuclei of Drosophila cells are thinner than the veil-like structures in mammalian cells. The connectivity of chromosomes shows linear arrangement (3,1, 2,4), with larger chromosomes (1 and 2) inside and smaller chromosomes (3, 4) at the two ends in the chromosomal chain.

Original languageEnglish
Pages (from-to)547-553
Number of pages7
JournalDNA and Cell Biology
Volume25
Issue number10
DOIs
Publication statusPublished - Oct 2006

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Chromosome Structures
Interphase
Cell Nucleus
S Phase
Drosophila
Chromatin
Chromosomes
Chromosomes, Human, Pair 4
Chromosomes, Human, Pair 3
Chromosomes, Human, Pair 2
Chromosomes, Human, Pair 1

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cell Biology

Cite this

Structure of interphase chromosomes in the nuclei of Drosophila cells. / Bánfalvi, G.

In: DNA and Cell Biology, Vol. 25, No. 10, 10.2006, p. 547-553.

Research output: Contribution to journalArticle

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