Results 1 to 10 of about 1,518,966 (331)

Duality properties of indicatrices of knots

open access: yes, 2012
The bridge index and superbridge index of a knot are important invariants in knot theory. We define the bridge map of a knot conformation, which is closely related to these two invariants, and interpret it in terms of the tangent indicatrix of the knot ...
A.S. McRae   +19 more
core   +1 more source

Common DNA sequence variation influences 3-dimensional conformation of the human genome. [PDF]

open access: yes, 2019
BACKGROUND:The 3-dimensional (3D) conformation of chromatin inside the nucleus is integral to a variety of nuclear processes including transcriptional regulation, DNA replication, and DNA damage repair.
Chiou, Joshua   +12 more
core   +3 more sources

Crystal structure of 2-methoxy-2-[(4-methoxyphenyl)sulfanyl]-1-phenylethanone

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title β-thiocarbonyl compound, C16H16O3S, the adjacent methoxy and carbonyl O atoms are synperiplanar [the O—C—C—O torsion angle is 19.8 (4)°] and are separated by 2.582 (3) Å.
Ignez Caracelli   +5 more
doaj   +1 more source

Crystal structure of 7-[(2E)-2-benzylidene-3-oxobutoxy]-4-methyl-2H-chromen-2-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
Two independent molecules (A and B) comprise the asymmetric unit of the title compound, C21H18O4. There are significant conformational differences between the molecules relating in particular to the relative orientation of the 3-oxo-2-(phenylmethylidene ...
Ignez Caracelli   +4 more
doaj   +1 more source

Molecular modeling of an antigenic complex between a viral peptide and a class I major histocompatibility glycoprotein [PDF]

open access: yes, 1992
Computer simulation of the conformations of short antigenic peptides (&lo residues) either free or bound to their receptor, the major histocompatibility complex (MHC)- encoded glycoprotein H-2 Ld, was employed to explain experimentally determined ...
Allen   +38 more
core   +1 more source

Crystal structures of three ortho-substituted N-acylhydrazone derivatives

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
To explore the effect of the nature of substitutions on the structural parameters and hydrogen-bond interactions in N-acylhydrazone derivatives, the crystal structures of three ortho-substituted N-acylhydrazone derivatives, namely (E)-N-{2-[2-(2 ...
H. Purandara   +2 more
doaj   +1 more source

cis,trans,cis-1,2,3,4-Tetrakis[2-(ethylsulfanyl)phenyl]cyclobutane

open access: yesIUCrData, 2016
The title cyclobutane derivative, C36H40S4, formed serendipitously through a photochemically initiated [2 + 2] cycloaddition. The asymmetric unit contains half a molecule with the 2-(ethylsulfanyl)phenyl substituents in a cis configuration, the other ...
Barbara Sohr   +4 more
doaj   +1 more source

Effect of Polish and foreign purebred Arabian stallions on conformation traits of their progeny participating in shows in the last decade [PDF]

open access: yesJournal of Central European Agriculture, 2014
Observations confirm correctness of the statement that the best recommendation for a stallion is his progeny. The aim of this study was indicating purebred Arabian stallions passing on to their progeny best conformation traits, assessed in Polish shows ...
Rafal Czarnecki
doaj   +1 more source

New monoclinic form of {O-Ethyl N-(4-nitrophenyl)thiocarbamato-κS}(tri-4-tolylphosphane-κP)gold(I): crystal structure and Hirshfeld surface analysis

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The title phosphanegold(I) thiolate compound, [Au(C9H9N2O3S)(C21H21P)], is a second monoclinic polymorph (space group P21/c) that complements a previously reported Cc polymorph [Broker & Tiekink (2008). Acta Cryst. E64, m1582]. An SP donor set defines an
Fong Sheen Kuan   +2 more
doaj   +1 more source

p97 Disease Mutations Modulate Nucleotide-Induced Conformation to Alter Protein-Protein Interactions. [PDF]

open access: yes, 2016
The AAA+ ATPase p97/VCP adopts at least three conformations that depend on the binding of ADP and ATP and alter the orientation of the N-terminal protein-protein interaction (PPI) domain into up and down conformations.
Arkin, Michelle   +2 more
core  

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