Hfq protein

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The Hfq protein was discovered in 1968 as an E. coli host factor that was essential for replication of the bacteriophage Qβ.[1] It is found to be involved in a variety of RNA modification processes. It has been shown that Hfq targets mRNA transcripts for degradation. The protein is related to the Sm proteins found in the spliceosome. Six copies of the Hfq protein form a hexagonal ring.[1] A number of small bacterial RNAs have been shown to bind to Hfq:[1]

Known RNA targets
RydC RNA Qrr RNA
OxyS RNA Spot 42 RNA
RyeB RNA CyaR RNA
RyhB RNA DicF RNA
GcvB RNA MicF RNA
MicC RNA RprA RNA
DsrA RNA MicA RNA / SraD RNA
SraE RNA / OmrB RNA / RygB RNA SraJ RNA
SraH RNA GadY RNA
SgrS RNA SroC RNA
RybB RNA RybB
RyeF MicA
OmrA RNA / RygA RNA

Most of these RNAs share a similar structure composed of three stem-loops.

References


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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

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