Results 81 to 90 of about 234,152 (246)

Toward a molecular understanding of yeast silent chromatin : roles for H4K16 acetylation and the Sir3 C-terminus [PDF]

open access: yes, 2012
Discrete regions of the eukaryotic genome assume a heritable chromatin structure that is refractory to gene expression. In budding yeast, silent chromatin is characterized by the loading of the Silent Information Regulatory (Sir) proteins (Sir2, Sir3 and
Oppikofer, Mariano
core   +1 more source

Multisystem proteinopathy due to a homozygous p.Arg159His VCP mutation : a tale of the unexpected [PDF]

open access: yes, 2020
ObjectiveTo assess the clinical, radiologic, myopathologic, and proteomic findings in a patient manifesting a multisystem proteinopathy due to a homozygous valosin-containing protein gene (VCP) mutation previously reported to be pathogenic in the ...
Azmi, A   +12 more
core   +1 more source

Inter-ring rotations of AAA ATPase p97 revealed by electron cryomicroscopy [PDF]

open access: yesOpen Biology, 2014
The type II AAA+ protein p97 is involved in numerous cellular activities, including endoplasmic reticulum-associated degradation, transcription activation, membrane fusion and cell-cycle control.
Heidi O. Yeung   +7 more
doaj   +1 more source

The AAA + ATPase TorsinA polymerizes into hollow helical tubes with 8.5 subunits per turn

open access: yesNature Communications, 2019
TorsinA is an ER-resident AAA + ATPase, whose deletion of glutamate E303 results in the genetic neuromuscular disease primary dystonia. TorsinA is an unusual AAA + ATPase that needs an external activator.
E. Demircioğlu   +8 more
semanticscholar   +1 more source

ESCRT-III mediated cell division in Sulfolobus acidocaldarius - a reconstitution perspective [PDF]

open access: yes, 2014
In the framework of synthetic biology, it has become an intriguing question what would be the minimal representation of cell division machinery. Thus, it seems appropriate to compare how cell division is realized in different microorganisms. Inparticular,
Härtel, T., Schwille, P.
core   +2 more sources

SPG4 and Dementia: Expanding the Clinical Spectrum

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegia (HSP) is a group of disorders characterized by progressive spasticity and lower limb weakness, with mutations in SPG4/SPAST being the most common cause. Detailed studies and clinical and molecular comparisons across different populations are missing.
Emanuele Panza   +19 more
wiley   +1 more source

Assembly of the AAA ATPase Vps4 on ESCRT-III [PDF]

open access: yesMolecular Biology of the Cell, 2010
Vps4 is a key enzyme that functions in endosomal protein trafficking, cytokinesis, and retroviral budding. Vps4 activity is regulated by its recruitment from the cytoplasm to ESCRT-III, where the protein oligomerizes into an active ATPase. The recruitment and oligomerization steps are mediated by a complex network of at least 12 distinct interactions ...
Shestakova, Anna   +6 more
openaire   +2 more sources

Bacterial rotary export ATPases are allosterically regulated by the nucleotide second messenger cyclic-di-GMP [PDF]

open access: yes, 2015
The widespread second messenger molecule cyclic di-GMP (cdG) regulates the transition from motile and virulent lifestyles to sessile, biofilm-forming ones in a wide range of bacteria. Many pathogenic and commensal bacterial-host interactions are known to
Abel   +89 more
core   +1 more source

Post‐LECA Origin and Diversification of an Axonemal Outer Arm Dynein Motor

open access: yesCytoskeleton, EarlyView.
ABSTRACT Dyneins were present in the last eukaryotic common ancestor (LECA) and play key roles in eukaryotic biology. Axonemal dyneins form the inner and outer arms that power ciliary beating, and it has long been recognized that outer arms in some organisms contain two different heavy chain motors, whereas those from other species contain a third unit
Stephen M. King
wiley   +1 more source

The AAA ATPase Vps4 binds ESCRT-III substrates through a repeating array of dipeptide-binding pockets

open access: yeseLife, 2017
The hexameric AAA ATPase Vps4 drives membrane fission by remodeling and disassembling ESCRT-III filaments. Building upon our earlier 4.3 Å resolution cryo-EM structure (Monroe et al., 2017), we now report a 3.2 Å structure of Vps4 bound to an ESCRT-III ...
H. Han   +4 more
semanticscholar   +1 more source

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