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The eIF4A translation initiation factor was the first DEAD box protein found to have an RNA-dependent ATPase activity. It has been proposed that this abundant protein helps in unwinding the secondary structure in the 5'-untranslated region. [17] This can inhibit the scanning process of the small ribosomal subunit, if not unwound. [17]
RNA helicases and DNA helicases can be found together in all the helicase superfamilies except for SF6. [58] [59] All the eukaryotic RNA helicases that have been identified up to date are non-ring forming and are part of SF1 and SF2. On the other hand, ring-forming RNA helicases have been found in bacteria and viruses. [56]
Eukaryotic translation is the biological process by which messenger RNA is translated into proteins in eukaryotes. It consists of four phases: initiation, elongation, termination, and recapping. It consists of four phases: initiation, elongation, termination, and recapping.
DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases.They are implicated in a number of cellular processes involving alteration of RNA secondary structure, such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly.
DEAD box proteins are putative RNA helicases characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD). They are implicated in a number of cellular processes involving alteration of RNA secondary structure, such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution ...
9188 56200 Ensembl ENSG00000165732 ENSMUSG00000020075 UniProt Q9NR30 Q9JIK5 RefSeq (mRNA) NM_001256910 NM_004728 NM_019553 RefSeq (protein) NP_001243839 NP_004719 NP_062426 Location (UCSC) Chr 10: 68.96 – 68.99 Mb Chr 10: 62.42 – 62.44 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Nucleolar RNA helicase 2 is an enzyme that in humans is encoded by the DDX21 gene. Function DEAD ...
A Rho factor acts on an RNA substrate. Rho's key function is its helicase activity, for which energy is provided by an RNA-dependent ATP hydrolysis. The initial binding site for Rho is an extended (~70 nucleotides, sometimes 80–100 nucleotides) single-stranded region, rich in cytosine and poor in guanine, called the rho utilisation site (rut), in the RNA being synthesised, upstream of the ...
RNA helicases are enzymes that use the energy released from the hydrolysis of ATP to manipulate the secondary structure of RNA, and the DEAD box family is the largest family of RNA helicases. [11] The name "DEAD box" refers the key D-E-A-D amino acid sequence on motif II of the helicase that participates in nucleoside triphosphate binding (in ...