Results 11 to 20 of about 93,566 (291)

Nuclear Vav3 is required for polycomb repression complex-1 activity in B-cell lymphoblastic leukemogenesis

open access: yesNature Communications, 2022
Ph+ and Ph-like B-ALL remain poor prognosis leukemias. VAV3, a guanine nucleotide exchange factor, is activated and overexpressed in these leukemias. Here the authors reveal that leukemic VAV3 is predominantly nuclear.
R. C. Nayak   +14 more
doaj   +1 more source

ADP-Ribosylation Factor Family of Small GTP-Binding Proteins: Their Membrane Recruitment, Activation, Crosstalk and Functions

open access: yesFrontiers in Cell and Developmental Biology, 2022
Members of the ADP-ribosylation factor (ARF) family of guanine-nucleotide binding proteins play critical roles in various cellular processes, especially in regulating the secretory, and endocytic pathways.
Tiantian Li   +3 more
doaj   +1 more source

The minimal autoinhibited unit of the guanine nucleotide exchange factor intersectin. [PDF]

open access: yesPLoS ONE, 2010
Intersectin-1L is a member of the Dbl homology (DH) domain guanine nucleotide exchange factors (GEF) which control Rho-family GTPase signaling. Intersectin-1L is a GEF that is specific for Cdc42.
K Farid Ahmad, Wendell A Lim
doaj   +1 more source

Origin and Isoform Specific Functions of Exchange Proteins Directly Activated by cAMP: A Phylogenetic Analysis

open access: yesCells, 2021
Exchange proteins directly activated by cAMP (EPAC1 and EPAC2) are one of the several families of cellular effectors of the prototypical second messenger cAMP.
Zhuofu Ni, Xiaodong Cheng
doaj   +1 more source

GTP binding to translation factor eIF2B stimulates its guanine nucleotide exchange activity

open access: yesiScience, 2021
Summary: eIF2B is the guanine nucleotide exchange factor (GEF) required for cytoplasmic protein synthesis initiation in eukaryotes and its regulation within the integrated stress response (ISR).
Christopher J. Kershaw   +5 more
doaj   +1 more source

Role of ARHGEF3 as a GEF and mTORC2 Regulator

open access: yesFrontiers in Cell and Developmental Biology, 2022
Guanine nucleotide exchange factors (GEFs) activate GTPases by stimulating the release of guanosine diphosphate to permit the binding of guanosine triphosphate.
Sana Abdul Khaliq   +5 more
doaj   +1 more source

Targeting Rac and Cdc42 GEFs in Metastatic Cancer

open access: yesFrontiers in Cell and Developmental Biology, 2020
The Rho family GTPases Rho, Rac, and Cdc42 have emerged as key players in cancer metastasis, due to their essential roles in regulating cell division and actin cytoskeletal rearrangements; and thus, cell growth, migration/invasion, polarity, and adhesion.
Maria del Mar Maldonado   +3 more
doaj   +1 more source

Eukaryotic translation elongation factor 1A (eEF1A) domain I from S. cerevisiae is required but not sufficient for inter-species complementation [PDF]

open access: yes, 2012
Ethanolamine phosphoglycerol (EPG) is a protein modification attached exclusively to eukaryotic elongation factor 1A (eEF1A). In mammals and plants, EPG is linked to conserved glutamate residues located in eEF1A domains II and III, whereas in the ...
Eva Greganova   +5 more
core   +8 more sources

Lpg0393 of Legionella pneumophila is a guanine-nucleotide exchange factor for Rab5, Rab21 and Rab22. [PDF]

open access: yesPLoS ONE, 2015
Legionella pneumophila, a human intracellular pathogen, encodes about 290 effector proteins that are translocated into host cells through a secretion machinery.
Young-Sik Sohn   +9 more
doaj   +1 more source

A disappearing act performed by magnesium: the nucleotide exchange mechanism of Ran GTPase by Quantum mechanics/Molecular mechanics studies [PDF]

open access: yes, 2016
The Ran GTPase protein is a guanine nucleotide-binding protein (GNBP) with an acknowledged profile in cancer onset, progression and metastases. The complex mechanism adopted by GNBPs in exchanging GDP for GTP is an intriguing process and crucial for Ran ...
Huang, Meilan   +3 more
core   +1 more source

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