GATE2017-35

Milicevic3306 asked in Others Mar 26, 2018 edited Dec 8, 2020 by go_editor

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The specific activity of an enzyme in a crude extract of $\textit{E.coli}$ is $9.5$ units/mg of protein. The specific activity increased to $68$ units/mg of protein upon ion-exchange chromatography. The fold purification is ________

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Milicevic3306 asked in Others Mar 26, 2018 edited Dec 8, 2020 by go_editor

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If a protein contains four cysteine residues, the number of different ways they can simultaneously form two intra-molecular disulphide bonds is __________.

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GATE2017-25
At the transcription start site of a gene, any of the four nucleotides can occur with equal probability $p$. The Shannon Entropy $S$, given by $S= – \Sigma_{i=1}^4 p_i \ln p_i$, for this start site is _________

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