Results 71 to 80 of about 4,605,487 (285)

CONFOLD2: improved contact-driven ab initio protein structure modeling

open access: yesBMC Bioinformatics, 2018
Background Contact-guided protein structure prediction methods are becoming more and more successful because of the latest advances in residue-residue contact prediction.
Badri Adhikari, Jianlin Cheng
doaj   +1 more source

Statistical properties of contact vectors

open access: yes, 2001
We study the statistical properties of contact vectors, a construct to characterize a protein's structure. The contact vector of an N-residue protein is a list of N integers n_i, representing the number of residues in contact with residue i.
A. F. Pereira de Araujo   +37 more
core   +1 more source

Geodesible contact structures on 3–manifolds [PDF]

open access: yesGeometry & Topology, 2008
In this paper, we study and almost completely classify contact structures on closed 3--manifolds which are totally geodesic for some Riemannian metric. Due to previously known results, this amounts to classifying contact structures on Seifert manifolds which are transverse to the fibers.
openaire   +4 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

Non-contact structure solar desalination system for higher depths [PDF]

open access: yesE3S Web of Conferences
To address the worldwide issue of water scarcity, prompt action is required. Solar desalination is one potential sustainable solution that could be considered for this problem.
Uday Kiran Matta, Kumar Kaviti Ajay
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Contact structures on elliptic $3$-manifolds [PDF]

open access: yesProceedings of the American Mathematical Society, 2004
We show that an oriented elliptic 3-manifold admits a universally tight positive contact structure iff the corresponding group of deck transformations on $S^3$ preserves a standard contact structure pointwise. We also relate univerally tight contact structures on 3-manifolds covered by $S^3$ to the exceptional isomorphism $SO(4)=(SU(2)\times SU(2 ...
openaire   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Every contact manifold can be given a non-fillable contact structure

open access: yes, 2007
Recently Francisco Presas Mata constructed the first examples of closed contact manifolds of dimension larger than 3 that contain a plastikstufe, and hence are non-fillable.
Bourgeois, K. Niederkruger, O. van Koert
core   +2 more sources

Fibrations and contact structures [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We prove that a closed 3‐dimensional manifold is a torus bundle over the circle if and only if it carries a closed nonsingular 1‐form which is linearly deformable into contact forms.
Dathe, Hamidou, Rukimbira, Philippe
openaire   +4 more sources

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