<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Inácio, José Manuel</style></author><author><style face="normal" font="default" size="100%">Isabel de Sá-Nogueira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">&lt;a href=&quot;http://jb.asm.org/content/189/22/8371.full&quot; target=&quot;_blank&quot;&gt;&lt;i&gt;trans&lt;/i&gt;-Acting Factors and cis Elements Involved in Glucose Repression of Arabinan Degradation in &lt;i&gt;Bacillus subtilis&lt;/i&gt;.&lt;/a&gt;</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Bacteriology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><number><style face="normal" font="default" size="100%">22</style></number><volume><style face="normal" font="default" size="100%">189</style></volume><pages><style face="normal" font="default" size="100%">8371-8376</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align:justify&quot;&gt;In &lt;i&gt;Bacillus subtilis&lt;/i&gt;, the synthesis of enzymes involved in the degradation of arabinose-containing polysaccharides is subject to carbon catabolite repression (CCR). Here we show that CcpA is the major regulator of repression of the arabinases genes in the presence of glucose. CcpA acts via binding to one &lt;i&gt;cre&lt;/i&gt; each in the promoter regions of the &lt;i&gt;abnA&lt;/i&gt; and &lt;i&gt;xsa&lt;/i&gt; genes and to two &lt;i&gt;cres&lt;/i&gt; in the &lt;i&gt;araABDLMNPQ-abfA&lt;/i&gt; operon. The contributions of the coeffectors HPr and Crh to CCR differ according to growth phase. HPr dependency occurs during both exponential growth and the transitional phase, while Crh dependency is detected mainly at the transitional phase. Our results suggest that Crh synthesis may increase at the end of exponential growth and consequently contribute to this effect, together with other factors.&lt;/p&gt;
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