Allolactose

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&nbsp;Allolactose is a molecule made of galactose and glucose joined by alpha - 1,6 [https://teaching.ncl.ac.uk/bms/wiki/index.php/Glycosidic_bond glycosidic bond]. It is the side product of the conversion of lactose to galactose and glucose by beta- galactosidase. Allolactose is an inducer of [https://teaching.ncl.ac.uk/bms/wiki/index.php/Lac_operon lac operon] in prokaryotes. It binds to the lac repressor causing a comformational change which reduces the reprossor's affinity for the operator DNA. As results [https://teaching.ncl.ac.uk/bms/wiki/index.php/RNA_polymerase RNA polymerase] can initiate transcription of the lac genes.<ref>Berg JM, Tymoczko JL, Gatto GJ, Stryer L. Biochemistry. 8th ed. New York: W.H. Freeman &amp;amp;amp; Commpany, a Macmillan Education Print. 2015</ref>  
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Allolactose is a [[molecule|molecule]] made of [[galactose|galactose]] and [[glucose|glucose]] joined by alpha - 1,6 [[glycosidic bond|glycosidic bond]]. It is the side product of the conversion of lactose to galactose and glucose by beta- [[galactosidase|galactosidase]]. Allolactose is an inducer of [[lac operon|lac operon]] in prokaryotes. It binds to the lac repressor causing a comformational change which reduces the reprossor's affinity for the operator DNA. As results [[RNA polymerase|RNA polymerase]] can initiate transcription of the [[lac genes|lac genes]]<ref>Berg JM, Tymoczko JL, Gatto GJ, Stryer L. Biochemistry. 8th ed. New York: W.H. Freeman &amp;amp;amp;amp; Commpany, a Macmillan Education Print. 2015</ref>.<br>  
 
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=== References  ===
 
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Latest revision as of 22:24, 4 December 2017

Allolactose is a molecule made of galactose and glucose joined by alpha - 1,6 glycosidic bond. It is the side product of the conversion of lactose to galactose and glucose by beta- galactosidase. Allolactose is an inducer of lac operon in prokaryotes. It binds to the lac repressor causing a comformational change which reduces the reprossor's affinity for the operator DNA. As results RNA polymerase can initiate transcription of the lac genes[1].

References

  1. Berg JM, Tymoczko JL, Gatto GJ, Stryer L. Biochemistry. 8th ed. New York: W.H. Freeman &amp;amp;amp; Commpany, a Macmillan Education Print. 2015
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