Results 41 to 50 of about 2,431 (270)
Alexander and writhe polynomials for virtual knots [PDF]
, 2016 We give a new interpretation of the Alexander polynomial Δ0 for virtual knots due to Sawollek and Silver and Williams, and use it to show that, for any virtual knot, Δ0 determines the writhe polynomial of Cheng and Gao (equivalently, Kauffman\u27s affine
Mellor, Blake
core
Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding
FEBS Letters, EarlyView.In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança +2 more
wiley +1 more source
The Relationship between Kinetic and Magnetic Helicity in Solar Active Regions
The Astrophysical JournalUsing Helioseismic and Magnetic Imager/Solar Dynamics Observatory data, we search for a relationship between kinetic helicity and magnetic helicity in solar active regions (ARs) using a sample of 62 ARs from 2010 May to 2015 May.
Yang Liu +5 more
doaj +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
The Astrophysical JournalWe explore what fraction of delta sunspots with a sharp polarity inversion line (PIL) in photospheric magnetograms are produced by a writhe kink in an emerging twisted flux rope.
Ronald L. Moore +4 more
doaj +1 more source
Computing the Writhing Number of a Polygonal Knot [PDF]
Discrete and Computational Geometry, 2004 The writhing number notion captures the physical phenomenon that a cord tends to form loops and coils when it is twisted. This concept has received attention both in physics and in biochemistry. In this paper, the authors study algorithms for computing the writhing number of a polygonal knot.
Pankaj K. Agarwal +2 more
openaire +2 more sources
, 2023 Intuitive interpretation of the writhe; an average of the sum of signed crossings over all projections.
Arron Bale (17458357) +2 more
core +1 more source
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source
Twist-writhe partitioning in a coarse-grained DNA minicircle model
, 2010 Here we present a systematic study of supercoil formation in DNA minicircles under varying linking number by using molecular-dynamics simulations of a two-bead coarse-grained model. Our model is designed with the purpose of simulating long chains without
Sayar, Mehmet; Avşaroğlu, Barış; Kabakçıoğlu, Alkan +3 more
core +1 more source
The writhe profiles and mutually similar sections of the trefoil knotted 2RH3 and unknotted 7YTT.
, 2023 The writhe profiles and mutually similar sections of the trefoil knotted 2RH3 and unknotted 7YTT.
Arron Bale (17458357) +2 more
core +1 more source