RhoGDIs (Rho GDP-dissociation inhibitors) are the natural inhibitors of Rho GTPases. They interfere with Rho protein function by either blocking upstream activation or association with downstream signalling molecules. RhoGDIs can also extract membrane-bound Rho GTPases to form soluble cytosolic complexes. We have shown previously that purified yeast RhoGDI Rdi1p, can inhibit vacuole membrane fu...

PURPOSE The Pro23His (P23H) rhodopsin (RHO) mutation underlies the most common form of human autosomal dominant retinitis pigmentosa (adRP). The objective of this investigation was to establish a transgenic miniature swine model of RP using the human P23H RHO gene. METHODS Somatic cell nuclear transfer (SCNT) was used to create transgenic miniature pigs that expressed the human P23H RHO mutat...

BACKGROUND To examine the associations between vision-targeted health-related quality of life (VT-HRQ) and ocular surface parameters in patients with Sjögren's syndrome, a systemic autoimmune disease characterized by dry eye and dry mouth. METHODS Forty-two patients fulfilling European / American diagnostic criteria for Sjögren's syndrome underwent Schirmer testing without anesthesia, ocular ...

Let $WS(X, d)$ be the class of ultrametric spaces which are weakly similar to space $(X, d)$. The main results paper completely describe for equality $$ \rho(x, y) = f(d(\Phi(x), \Phi(y))) holds every $(Y, \rho) \in WS(X, d)$, weak similarity $\Phi \colon Y \to X$, and all $x$, $y Y$ with some (pseudoultrametric) preserving function $f$ depending on $\Phi$.

The Rho family of GTPases belongs to the Ras superfamily of low molecular weight (∼21 kDa) guanine nucleotide binding proteins. The most extensively studied members are RhoA, Rac1, and Cdc42. In the last few decades, studies have demonstrated that Rho family GTPases are important regulatory molecules that link surface receptors to the organization of the actin and microtubule cytoskeletons. Ind...

Introduction The Rho family is part of the Ras superfamily of small GTP-binding proteins, and consists of Rho (A, B and C), Rac (1 and 2), two Cdc42 isoforms, RhoD, RhoE, RhoG, TClO and TTF [l]. Different members of the large Ras superfamily regulate a diverse array of cellular processes, from vesicle trafficking to signal transduction. They all have in common the ability to bind and hydrolyse ...

Despite the prevalence of antisense transcripts in bacterial transcriptomes, little is known about how their synthesis is controlled. We report that a major function of the Escherichia coli termination factor Rho and its cofactor, NusG, is suppression of ubiquitous antisense transcription genome-wide. Rho binds C-rich unstructured nascent RNA (high C/G ratio) prior to its ATP-dependent dissocia...

Proteins in the Rho family are small monomeric GTPases primarily involved in polarization, control of cell division, and reorganization of cytoskeletal elements. Phylogenetic analysis of predicted fungal Rho proteins suggests that a new Rho-type GTPase family, whose founding member is Rho4 from the archiascomycete Schizosaccharomyces pombe, is involved in septation. S. pombe rho4Delta mutants h...

AIMS Platelet adhesion and aggregation is essential for haemostasis and thrombosis. Cytoskeletal reorganization of activated platelets plays a crucial role in these processes and implies activation of Rho GTPases. Rho GTPases are regulated by GTPase-activating proteins (GAPs) that stimulate GTP hydrolysis to terminate Rho signalling. In this study, we explored the regulation of Rho GTPases in p...

The RhoA (Rho) GTPase is a master regulator of dendrite morphogenesis. Rho activation in developing neurons slows dendrite branch dynamics, yielding smaller, less branched dendrite arbors. Constitutive activation of Rho in mature neurons causes dendritic spine loss and dendritic regression, indicating that Rho can affect dendritic structure and function even after dendrites have developed. Howe...