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[[Image:1kks.gif|left|200px]]
{{Seed}}
[[Image:1kks.png|left|200px]]


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{{STRUCTURE_1kks|  PDB=1kks  |  SCENE=  }}  
{{STRUCTURE_1kks|  PDB=1kks  |  SCENE=  }}  


'''Structure of the histone mRNA hairpin required for cell cycle regulation of histone gene expression'''
===Structure of the histone mRNA hairpin required for cell cycle regulation of histone gene expression===




==Overview==
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Expression of replication-dependent histone genes requires a conserved hairpin RNA element in the 3' untranslated regions of poly(A)-less histone mRNAs. The 3' hairpin element is recognized by the hairpin-binding protein or stem-loop-binding protein (HBP/SLBP). This protein-RNA interaction is important for the endonucleolytic cleavage generating the mature mRNA 3' end. The 3' hairpin and presumably HBP/SLBP are also required for nucleocytoplasmic transport, translation, and stability of histone mRNAs. RNA 3' processing and mRNA stability are both regulated during the cell cycle. Here, we have determined the three-dimensional structure of a 24-mer RNA comprising a mammalian histone RNA hairpin using heteronuclear multidimensional NMR spectroscopy. The hairpin adopts a novel UUUC tetraloop conformation that is stabilized by base stacking involving the first and third loop uridines and a closing U-A base pair, and by hydrogen bonding between the first and third uridines in the tetraloop. The HBP interaction of hairpin RNA variants was analyzed in band shift experiments. Particularly important interactions for HBP recognition are mediated by the closing U-A base pair and the first and third loop uridines, whose Watson-Crick functional groups are exposed towards the major groove of the RNA hairpin. The results obtained provide novel structural insight into the interaction of the histone 3' hairpin with HBP, and thus the regulation of histone mRNA metabolism.
The line below this paragraph, {{ABSTRACT_PUBMED_11871659}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 11871659 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11871659}}


==About this Structure==
==About this Structure==
Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KKS OCA].  
Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KKS OCA].  


==Reference==
==Reference==
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[[Category: Rna hairpin]]
[[Category: Rna hairpin]]
[[Category: Rna processing]]
[[Category: Rna processing]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 22:51:44 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 10:29:16 2008''

Revision as of 07:29, 2 July 2008

File:1kks.png

Template:STRUCTURE 1kks

Structure of the histone mRNA hairpin required for cell cycle regulation of histone gene expression

Template:ABSTRACT PUBMED 11871659

About this Structure

Full experimental information is available from OCA.

Reference

Structure of the histone mRNA hairpin required for cell cycle regulation of histone gene expression., Zanier K, Luyten I, Crombie C, Muller B, Schumperli D, Linge JP, Nilges M, Sattler M, RNA. 2002 Jan;8(1):29-46. PMID:11871659

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