Protein Hfq

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== Structural highlights ==
== Structural highlights ==
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The biological assembly of Protein Hfq from ''E. coli'' is <scene name='87/875687/Cv/2'>homohexamer</scene> (PDB code [[4ht9]]). The 3D structure of the complex between Hfq and <scene name='87/875687/Cv/5'>poly(A) RNA and poly(U) RNA</scene> shows the poly(A) binding at the distal face of Hfq and poly(U) binding at its proximal face. For the poly(A) A-R-N binding site the A site shows <scene name='87/875687/Cv/4'>hydrogen bonding to Gln and Lys</scene>. The R site shows stacking interactions as well as hydrogen bonding. The N site does not show any interaction. The poly(U) binding site of Hfq is a classical uridine binding pocket with both stacking and hydrogen bonding interactions<ref>PMID:23605038</ref>.
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The biological assembly of Protein Hfq from ''E. coli'' is <scene name='87/875687/Cv/2'>homohexamer</scene> (PDB code [[4ht9]]). The 3D structure of the complex between Hfq and <scene name='87/875687/Cv/5'>poly(A) RNA and poly(U) RNA</scene> shows the poly(A) binding at the distal face of Hfq and poly(U) binding at its proximal face. For the poly(A) A-R-N binding site the A site shows <scene name='87/875687/Cv/4'>hydrogen bonding to Gln and Lys</scene>. The <scene name='87/875687/Cv/6'>R site shows stacking interactions as well as hydrogen bonding</scene>. The N site does not show any interaction. The poly(U) binding site of Hfq is a classical uridine binding pocket with both stacking and hydrogen bonding interactions<ref>PMID:23605038</ref>.
</StructureSection>
</StructureSection>

Revision as of 12:54, 22 February 2021

Structure of E. coli hexameric Hfq complex with poly(A) RNA and poly(U) RNA (PDB code 4ht9)

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3D Structures of protein Hfq

Updated on 22-February-2021


References

  1. ↑ Morita T, Aiba H. Mechanism and physiological significance of autoregulation of the Escherichia coli hfq gene. RNA. 2019 Feb;25(2):264-276. doi: 10.1261/rna.068106.118. Epub 2018 Nov 28. PMID:30487269 doi:http://dx.doi.org/10.1261/rna.068106.118
  2. ↑ Link TM, Valentin-Hansen P, Brennan RG. Structure of Escherichia coli Hfq bound to polyriboadenylate RNA. Proc Natl Acad Sci U S A. 2009 Nov 4. PMID:19889981
  3. ↑ Lybecker MC, Abel CA, Feig AL, Samuels DS. Identification and function of the RNA chaperone Hfq in the Lyme disease spirochete Borrelia burgdorferi. Mol Microbiol. 2010 Nov;78(3):622-35. doi: 10.1111/j.1365-2958.2010.07374.x. Epub, 2010 Sep 27. PMID:20815822 doi:http://dx.doi.org/10.1111/j.1365-2958.2010.07374.x
  4. ↑ Wang W, Wang L, Wu J, Gong Q, Shi Y. Hfq-bridged ternary complex is important for translation activation of rpoS by DsrA. Nucleic Acids Res. 2013 Jun 1;41(11):5938-48. doi: 10.1093/nar/gkt276. Epub 2013 , Apr 19. PMID:23605038 doi:10.1093/nar/gkt276

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Michal Harel, Alexander Berchansky

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