Answer1

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# Heat Unstable Nucleoid Protein
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# HU stimulates trascription using lambda phage template
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# It is made of 2 subunits: HU alpha and HU beta
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# It is an abundant non-specific DNA binding protein which is highly conserved between prokaryotes
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# About 30,000 to 55,000 HU molecules per cell exist in the exponentially growing cells of E. coli W3110.  Indicating that HU, together with Fis, forms a major nucleoid component in the growing E. coli cell
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# Considered prokaryotic homolog of eukaryotic histones which restrains DNA supercoils in the nucleoid
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# Certain fraction of HU is associated with ribosomes
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# At saturation, HU dimers may be associated, on average, every 300 to 400 bp of the E. coli genome
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# Upon entry into the stationary phase, the HU level started to decrease gradually, decreasing to less than one-third of the maximum level in the late stationary phase
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Revision as of 16:11, 30 May 2006

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