DDX56 explained

Probable ATP-dependent RNA helicase DDX56 is an enzyme that in humans is encoded by the DDX56 gene.^{[1] [2]}

This gene encodes a member of the DEAD box protein family. 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. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. The protein encoded by this gene shows ATPase activity in the presence of polynucleotides and associates with nucleoplasmic 65S preribosomal particles. This gene may be involved in ribosome synthesis, most likely during assembly of the large 60S ribosomal subunit.

Further reading

• Maruyama K, Sugano S . Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides . Gene . 138 . 1–2 . 171–4 . 1994 . 8125298 . 10.1016/0378-1119(94)90802-8 .
• Suzuki Y . Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library . Gene . 200 . 1–2 . 149–56 . 1997 . 9373149 . 10.1016/S0378-1119(97)00411-3 . Yoshitomo-Nakagawa K . Maruyama K . Suyama . A . Sugano . S .
• Wiemann S . Toward a Catalog of Human Genes and Proteins: Sequencing and Analysis of 500 Novel Complete Protein Coding Human cDNAs . Genome Res. . 11 . 3 . 422–35 . 2001 . 11230166 . 10.1101/gr.GR1547R . 311072 . Weil B . Wellenreuther R . Gassenhuber . J . Glassl . S . Ansorge . W . Böcher . M . Blöcker . H . Bauersachs . S .
• Andersen JS . Directed proteomic analysis of the human nucleolus . Curr. Biol. . 12 . 1 . 1–11 . 2002 . 11790298 . 10.1016/S0960-9822(01)00650-9 . Lyon CE . Fox AH . Leung . Anthony K.L. . Lam . Yun Wah . Steen . Hanno . Mann . Matthias . Lamond . Angus I. . 14132033 . free . 2002CBio...12....1A .
• Valdez BC, Yang H, Hong E, Sequitin AM . Genomic structure of newly identified paralogue of RNA helicase II/Gu: detection of pseudogenes and multiple alternatively spliced mRNAs . Gene . 284 . 1–2 . 53–61 . 2002 . 11891046 . 10.1016/S0378-1119(01)00888-5 .
• Scherl A . Functional Proteomic Analysis of Human Nucleolus . Mol. Biol. Cell . 13 . 11 . 4100–9 . 2003 . 12429849 . 10.1091/mbc.E02-05-0271 . 133617 . Couté Y . Déon C . Callé . A . Kindbeiter . K . Sanchez . JC . Greco . A . Hochstrasser . D . Diaz . JJ .
• Strausberg RL . Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences . Proc. Natl. Acad. Sci. U.S.A. . 99 . 26 . 16899–903 . 2003 . 12477932 . 10.1073/pnas.242603899 . 139241 . Feingold EA . Grouse LH . Derge . JG . Klausner . RD . Collins . FS . Wagner . L . Shenmen . CM . Schuler . GD . 2002PNAS...9916899M . free .
• Scherer SW . Human Chromosome 7: DNA Sequence and Biology . Science . 300 . 5620 . 767–72 . 2003 . 12690205 . 10.1126/science.1083423 . 2882961 . Cheung J . MacDonald JR . Osborne . LR . Nakabayashi . K . Herbrick . JA . Carson . AR . Parker-Katiraee . L . Skaug . J . 2003Sci...300..767S .
• Ota T . Complete sequencing and characterization of 21,243 full-length human cDNAs . Nat. Genet. . 36 . 1 . 40–5 . 2004 . 14702039 . 10.1038/ng1285 . Suzuki Y . Nishikawa T . Otsuki . Tetsuji . Sugiyama . Tomoyasu . Irie . Ryotaro . Wakamatsu . Ai . Hayashi . Koji . Sato . Hiroyuki . free .
• Lehner B, Sanderson CM . A Protein Interaction Framework for Human mRNA Degradation . Genome Res. . 14 . 7 . 1315–23 . 2004 . 15231747 . 10.1101/gr.2122004 . 442147 .
• Gerhard DS . The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC) . Genome Res. . 14 . 10B . 2121–7 . 2004 . 15489334 . 10.1101/gr.2596504 . 528928 . Wagner L . Feingold EA . Shenmen . CM . Grouse . LH . Schuler . G . Klein . SL . Old . S . Rasooly . R .
• Andersen JS . Nucleolar proteome dynamics . Nature . 433 . 7021 . 77–83 . 2005 . 15635413 . 10.1038/nature03207 . Lam YW . Leung AK . Ong . Shao-En . Lyon . Carol E. . Lamond . Angus I. . Mann . Matthias . 2005Natur.433...77A . 4344740 .
• Ewing RM . Large-scale mapping of human protein–protein interactions by mass spectrometry . Mol. Syst. Biol. . 3 . 1. 89 . 2007 . 17353931 . 10.1038/msb4100134 . 1847948 . Chu P . Elisma F . Li . Hongyan . Taylor . Paul . Climie . Shane . McBroom-Cerajewski . Linda . Robinson . Mark D . O'Connor . Liam .

Notes and References

1. Zirwes RF, Eilbracht J, Kneissel S, Schmidt-Zachmann MS . A Novel Helicase-Type Protein in the Nucleolus: Protein NOH61 . Mol Biol Cell . 11 . 4 . 1153–67 . Jul 2000 . 10749921 . 14838 . 10.1091/mbc.11.4.1153.
2. Web site: Entrez Gene: DDX56 DEAD (Asp-Glu-Ala-Asp) box polypeptide 56.