Results 201 to 210 of about 4,121,048 (281)

Defining the role of αC helix interactions in the activation of the integrin αI domain

open access: yesThe FEBS Journal, EarlyView.
The α2I domain of the α2β1 integrin contains a distinctive αC helix and a conserved Arg288‐Glu318 ion pair that stabilizes the closed state of the domain. Disruption of this ion pair in the activated α2I variant unwinds the αC helix, which allows interaction with additional collagen‐binding sites increasing collagen binding.
Liisa Pösö   +7 more
wiley   +1 more source

Structural insights into xyloglucan recognition by an ABC transporter from a Gram‐positive, thermophilic bacterium

open access: yesThe FEBS Journal, EarlyView.
Athe_2052 is an ABC transporter substrate‐binding protein that recognizes xyloglucan heptasaccharide (XXXG), a soluble breakdown product of plant xyloglucan. The crystal structure of Athe_2052, together with binding assays and computational modeling, shows how XXXG is recognized by this sugar transporter.
Hansen Tjo   +6 more
wiley   +1 more source

Structures of the UBR4 complex reveal a giant arena to capture diverse substrates for ubiquitin chain elongation

open access: yesThe FEBS Journal, EarlyView.
This review summarizes recent structures of the UBR4 complex, a giant E4 ubiquitin ligase which recognizes proteins with pre‐existing ubiquitin modifications and marks them for degradation. The UBR4 complex uses a large arena lined with substrate interaction modules to select features on ubiquitinated substrates, such as the presence of N‐degrons or ...
Daniel B. Grabarczyk, Tim Clausen
wiley   +1 more source

Ligand complex structures in protein crystallography. [PDF]

open access: yesActa Crystallogr D Struct Biol, 2017
Debreczeni JÉ, Emsley P.
europepmc   +1 more source

Ion binding sites and intermediate domain closure induced by D‐serine in the GluD1 ligand‐binding domain

open access: yesThe FEBS Journal, EarlyView.
GluD1 belongs to the ionotropic glutamate receptors and has important functions in the brain and brain diseases. We report the crystal structure of the GluD1 ligand‐binding domain with D‐serine and zinc ions. MD simulations supported promiscuous binding of cations and that chloride ions play a stabilizing role. Pro725 seems to hinder interlobe closure,
Flemming Steen Jørgensen   +4 more
wiley   +1 more source

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