Acts as a component of the translation initiation factor 2B (eIF2B) complex, which catalyzes the exchange of GDP for GTP on eukaryotic initiation factor 2 (eIF2) gamma subunit (PubMed:25858979, PubMed:27023709, PubMed:31048492). Its guanine nucleotide exchange factor activity is repressed when bound to eIF2 complex phosphorylated on the alpha subunit, thereby limiting the amount of methionyl-initiator methionine tRNA available to the ribosome and consequently global translation is repressed (PubMed:25858979, PubMed:31048492).
Leukoencephalopathy with vanishing white matter 4
VWM4
An autosomal recessive brain disease characterized by neurological features including progressive cerebellar ataxia, spasticity, and cognitive deficits. Brain imaging shows abnormal white matter that vanishes over time and is replaced by cerebrospinal fluid. Disease severity ranges from fatal infantile forms to adult forms without neurological deterioration. The disease is progressive with, in most individuals, additional episodes of rapid deterioration following febrile infections or minor head trauma. Death may occurs after a variable period after disease onset, usually following an episode of fever and coma. A subset of affected females with milder forms of the disease who survive to adolescence exhibit ovarian dysfunction. This variant of the disorder is called ovarioleukodystrophy.
None
The disease is caused by variants affecting the gene represented in this entry.
Belongs to the eIF-2B alpha/beta/delta subunits family.
EIF2BD, EIF2B4, Translation initiation factor eIF2B subunit delta, eIF2B GDP-GTP exchange factor subunit delta
Proteins
Neuroscience
57557Da
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ab127076