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
. 1976 Aug;73(8):2639-43.
doi: 10.1073/pnas.73.8.2639.

Linking numbers and nucleosomes

F H Crick

Linking numbers and nucleosomes

F H Crick. Proc Natl Acad Sci U S A. 1976 Aug.

Abstract

In considering supercoils formed by closed double-stranded molecules of DNA certain mathematical concepts, such as the linking number and the twist, are needed. The meaning of these for a closed ribbon is explained and also that of the writhing number of a closed curve. Some simple examples are given, some of which may be relevant to the structure of chromatin.

PubMed Disclaimer

References

    1. Proc Natl Acad Sci U S A. 1975 May;72(5):1843-7 - PubMed
    1. Proc Natl Acad Sci U S A. 1975 Dec;72(12):4876-80 - PubMed
    1. J Mol Biol. 1975 Jan 5;91(1):1-13 - PubMed
    1. J Mol Biol. 1974 Nov 15;89(4):783-801 - PubMed
    1. Cold Spring Harb Symp Quant Biol. 1975;39 Pt 1:199-208 - PubMed

LinkOut - more resources