Results 71 to 80 of about 232,963 (342)

Saccharomyces cerevisiae and Schizosaccharomyces pombe contain a homologue to the 54-kD subunit of the signal recognition particle that in S. cerevisiae is essential for growth. [PDF]

open access: yes, 1989
We have isolated and sequenced genes from Saccharomyces cerevisiae (SRP54SC) and Schizosaccharomyces pombe (SRP54sp) encoding proteins homologous to both the 54-kD protein subunit (SRP54mam) of the mammalian signal recognition particle (SRP) and the ...
Hann, BC, Poritz, MA, Walter, P
core  

Pigment Epithelium‐Derived Factor Deficiency Impairs Hippocampal Glutamate Homeostasis and Cognitive Function by Downregulating Astrocytic GLT‐1

open access: yesAdvanced Science, EarlyView.
The chronic glutamate‐induced excitotoxicity hypothesis has profoundly informed the therapeutic strategies employed in Alzheimer’s disease (AD). This study shows pigment epithelium‐derived factor (PEDF) regulates astrocytic glutamate transporter‐1 (GLT‐1)‐mediated glutamate homeostasis and cognition. Reduced PEDF correlates with lower Mini‐Mental State
Jin‐Hui Shi   +15 more
wiley   +1 more source

Structural comparison of unconventional G protein YchF with heterotrimeric G protein and small G protein

open access: yesPlant Signaling & Behavior, 2022
Guanine nucleotide-binding (G) proteins, namely, phosphate-binding (P) loop GTPases, play a critical role in life processes among different species. Based on the structural characteristics, G proteins can be divided into heterotrimeric G proteins, small ...
Maozhen Luo   +7 more
doaj   +1 more source

TBC1D22B Regulates ER‐to‐Golgi Trafficking via RAB1B Inactivation and Promotes Oncogenic Programs in Breast Cancer

open access: yesAdvanced Science, EarlyView.
TBC1D22B, a Golgi‐localized RabGAP linked to poor prognosis in breast cancer, inhibits ER‐to‐Golgi transport via RAB1B inactivation. This disrupts secretion, drives oncogenic transcriptional reprogramming, and promotes tumor growth. These findings indicate that TBC1D22B connects membrane trafficking to transcriptional control and cancer progression ...
Flavia Martino   +16 more
wiley   +1 more source

Structural insight into TPX2-stimulated microtubule assembly [PDF]

open access: yes, 2017
During mitosis and meiosis, microtubule (MT) assembly is locally upregulated by the chromatin-dependent Ran-GTP pathway. One of its key targets is the MT-associated spindle assembly factor TPX2.
Nogales, Eva   +3 more
core   +2 more sources

A Comprehensive Lateral Flow Strip Assay for On‐Site mRNA Vaccine Quality Control in Decentralized Manufacturing

open access: yesAdvanced Science, EarlyView.
A rapid, portable lateral flow strip assay for on‐site mRNA quality control is developed, enabling sequence‐independent analysis of 5' capping, integrity, and LNPs encapsulation efficiency. This cost‐effective method offers real‐time stability monitoring, reduced sample requirements, and comparable accuracy to standard techniques, enhancing ...
Dengwang Luo   +9 more
wiley   +1 more source

Large-scale, dynamin-like motions of the human guanylate binding protein 1 revealed by multi-resolution simulations.

open access: yesPLoS Computational Biology, 2019
Guanylate binding proteins (GBPs) belong to the dynamin-related superfamily and exhibit various functions in the fight against infections. The functions of the human guanylate binding protein 1 (hGBP1) are tightly coupled to GTP hydrolysis and ...
Bogdan Barz   +2 more
doaj   +1 more source

Expression Analysis of the Small GTP-Binding Protein Rac in Pterygium

open access: yesTürk Oftalmoloji Dergisi, 2023
Objectives: To determine the roles of small GTP-binding proteins Rac1, Rac2, and Rac3 expression in pterygial tissue and to compare these expressions with normal conjunctival tissue.
Ahmet Saracaloğlu   +6 more
doaj   +1 more source

The beta subunit of the signal recognition particle receptor is a transmembrane GTPase that anchors the alpha subunit, a peripheral membrane GTPase, to the endoplasmic reticulum membrane. [PDF]

open access: yes, 1995
The signal recognition particle receptor (SR) is required for the cotranslational targeting of both secretory and membrane proteins to the endoplasmic reticulum (ER) membrane.
Lauffer, L   +3 more
core  

Mutant mitochondrial elongation factor G1 and combined oxidative phosphorylation deficiency [PDF]

open access: yes, 2004
Although most components of the mitochondrial translation apparatus are encoded by nuclear genes, all known molecular defects associated with impaired mitochondrial translation are due to mutations in mitochondrial DNA.
Antonicka, H   +10 more
core   +4 more sources

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