Results 11 to 20 of about 1,097,336 (352)

DNA coiled coils [PDF]

open access: yesProceedings of the National Academy of Sciences, 2005
We report the coiled-coil structure of DNA, which is generated by the dodecanucleotide d(ATATATATATAT). The structure has been determined by single-crystal x-ray crystallography. The molecules form duplexes with single-stranded overhangs, which associate with neighbor molecules and give rise to infinite double helices in a coiled-coil conformation ...
J L, Campos   +4 more
openaire   +2 more sources

ARCIMBOLDOon coiled coils [PDF]

open access: yesActa Crystallographica Section D Structural Biology, 2018
ARCIMBOLDOsolves the phase problem by combining the location of small model fragments usingPhaserwith density modification and autotracing usingSHELXE. Mainly helical structures constitute favourable cases, which can be solved using polyalanine helical fragments as search models. Nevertheless, the solution of coiled-coil structures is often complicated
Caballero, Iracema   +5 more
openaire   +4 more sources

The coiled coil‐helix‐coiled coil‐helix proteins may be redox proteins [PDF]

open access: yesFEBS Letters, 2009
A number of nuclear encoded proteins are imported in to the intermembrane space of mitochondria where they adopt a coiled coil‐helix‐coiled coil‐helix (CHCH) fold. Two disulfide bonds formed by twin CX3C or CX9C motifs stabilize this fold. Some of these proteins are also characterized at their N‐termini by the presence of two additional cysteine ...
BANCI, LUCIA   +3 more
openaire   +3 more sources

Litema artivism: Community engaged scholarship with international online learning

open access: yesActa Structilia, 2023
The misconception that online learning and teaching for the building sciences is ineffective has been proven wrong. A blended learning technique, combining service-learning activities and research (community engaged scholarship) with Collaborative Online
Gerhard Bosman   +2 more
doaj   +1 more source

Identification of important error fields in stellarators using Hessian matrix method [PDF]

open access: yes, 2019
Error fields are predominantly attributed to inevitable coil imperfections. Controlling error fields during coil fabrication and assembly is crucial for stellarators.
127313   +13 more
core   +3 more sources

A seven-helix coiled coil [PDF]

open access: yesProceedings of the National Academy of Sciences, 2006
Coiled-coil proteins contain a characteristic seven-residue sequence repeat whose positions are designated a to g. The interacting surface between α-helices in a classical coiled coil is formed by interspersing nonpolar side chains at the a and d positions with hydrophilic residues at the flanking e and g positions.
Jie, Liu   +5 more
openaire   +2 more sources

Evolutionary Patterns in Coiled-Coils [PDF]

open access: yesGenome Biology and Evolution, 2015
Models of protein evolution are used to describe evolutionary processes, for phylogenetic analyses and homology detection. Widely used general models of protein evolution are biased toward globular domains and lack resolution to describe evolutionary processes for other protein types.
Surkont, J., Pereira-Leal, J. B.
openaire   +3 more sources

Design and performance analysis of a new evacuated tube solar air heaters equipped with fins and coils

open access: yesInternational Journal of Sustainable Energy, 2020
Evacuated tube solar air heaters (ETSH) are efficient, easy to maintain, and have low energy losses due to the vacuum between the absorber and the outer tubes.
Tareq Abu Hamed, Salem Alkharabsheh
doaj   +1 more source

Challenges in homology search: HMMER3 and convergent evolution of coiled-coil regions

open access: yesNucleic Acids Research, 2013
Detection of protein homology via sequence similarity has important applications in biology, from protein structure and function prediction to reconstruction of phylogenies. Although current methods for aligning protein sequences are powerful, challenges
Jaina Mistry   +4 more
semanticscholar   +1 more source

Endoscopic Ultrasound-Guided Angiotherapy for Gastric Varices—A Small Retrospective Study

open access: yesJournal of Digestive Endoscopy, 2020
Introduction Conventional n-butyl-cyanoacrylate (CYA) recommended for secondary prophylaxis of gastric varices (GV) is associated with significant rebleeding and glue embolism.
Kapil Sharma   +2 more
doaj   +1 more source

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