Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comment
. 2015 Sep 2:13:71.
doi: 10.1186/s12915-015-0182-9.

In vivo studies of the Drosophila insulator factor CTCF reach a Catch 22

Affiliations
Comment

In vivo studies of the Drosophila insulator factor CTCF reach a Catch 22

François Karch. BMC Biol. .

Abstract

Mutations in the proteins that bind insulator DNA elements that define the boundaries of chromatin domains can give morphogenetic readouts in Drosophila, as recently reported in BMC Biology by Bonchuk et al. in the Georgiev laboratory. But disentangling the effects on the phenotype may not be simple.See research article: http://www.biomedcentral.com/1741-7007/13/63.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
The Abd-B gene and its associated 3’ regulatory region (not drawn to scale) cover 165 kilobases of DNA. See text for explanation. Wild type (WT) (a) and Fab-7 1 (b) embryonic nerve cords stained with antibodies against Abd-B have been dissected out. Abdominal segments are numbered A5, A6, A7. Panel (a) shows the presence of CTCF binding sites at Mcp, Fab-6, Fab-8 and at the Abd-B promoter. The 5’-3’ polarity of the Abd-B transcription unit is indicated

Comment on

References

    1. Chetverina D, Aoki T, Erokhin M, Georgiev P, Schedl P. Making connections: insulators organize eukaryotic chromosomes into independent cis-regulatory networks. Bio Essays. 2014;36:163–172. - PMC - PubMed
    1. Ong CT, Corces VG. CTCF: an architectural protein bridging genome topology and function. Nat Rev Genet. 2014;15:234–246. doi: 10.1038/nrg3663. - DOI - PMC - PubMed
    1. Bonchuk A, Maksimenko O, Kyrchanova O, Ivlieva T, Mogila V, Deshpande G, et al. Functional role of dimerization and CP190 interacting domains of CTCF protein in Drosophila melanogaster. BMC Biol. 2015;13:63. doi: 10.1186/s12915-015-0168-7. - DOI - PMC - PubMed
    1. Schwartz YB, Linder-Basso D, Kharchenko PV, Tolstorukov MY, Kim M, Li HB, et al. Nature and function of insulator protein binding sites in the Drosophila genome. Genome Res. 2012;22:2188–2198. doi: 10.1101/gr.138156.112. - DOI - PMC - PubMed
    1. Gerasimova TI, Gdula DA, Gerasimov DV, Simonova O, Corces VG. A Drosophila protein that imparts directionality on a chromatin insulator is an enhancer of position-effect variegation. Cell. 1995;82:587–597. doi: 10.1016/0092-8674(95)90031-4. - DOI - PubMed

LinkOut - more resources