lac operon

Structure of lactose and the products of its cleavage.

Tetrameric LacI binds two operator sequences and induces DNA looping. Two dimeric LacI functional subunits (red+blue and green+orange) each bind a DNA operator sequence (labeled). These two functional subunits are coupled at the tetramerization region (labeled); thus, tetrameric LacI binds two operator sequences. This allows tetrameric LacI to induce DNA looping.

lac operon (lactose operon) is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. Although glucose is the preferred carbon source for most bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available. Gene regulation of the lac operon was the first genetic regulatory mechanism to be understood clearly, so it has become a foremost example of prokaryotic gene regulation. It is often discussed in introductory molecular and cellular biology classes at universities for this reason.

单词	Lactose operon
释义	Lactose operon 英语百科 lac operon lac operon (lactose operon) is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. Although glucose is the preferred carbon source for most bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available. Gene regulation of the lac operon was the first genetic regulatory mechanism to be understood clearly, so it has become a foremost example of prokaryotic gene regulation. It is often discussed in introductory molecular and cellular biology classes at universities for this reason.
随便看	Zamozhne的意思 Zampa的意思 Zampano的意思 Zamperini的意思 Zampese的意思 zampetti的意思 zampettis的意思 zampieri的意思 zampieris的意思 Zampillo的意思 zampino的意思 zamplate pipe的意思 Zampogna的意思 zampognas的意思 Zampolit的意思 Zampona的意思 Zampone的意思 zamponi的意思 Zamrotti的意思 ZAM的意思 zamsky的意思 Zamudio的意思 Zamuro, Pta.的意思 Zamuro, Sa.del的意思 Zamyatin的意思

Lactose operon

lac operon