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½ñÌì·ÒëÁËһƪÎÄÏ×£¬ÓÐÒ»¶Î»°£¬¡°For overexpression of the cgR_2128 gene in C. glutamicum, the cgR_2128 gene fragment amplified by PCR with primer 1 and 2 (Supplementary Table S1) was inserted into the NdeI site of a pCRB214 plasmid that is a derivative of an Escherichia coli¨CC. glutamicum shuttle vector pCRB22 [18] and that contains an expression cassette composed of a tac promoter, an NdeI site and an rrnB T1 terminator. C. glutamicum cells were transformed by electroporation [19]. Markerless gene disruption was carried out through a two-step homologous recombination using the suicide vector pCRA725 [8]. For disruption of cgR_2128, the nucleotide fragments (ca. 0.9 kb) of 50- and 30-regions of cgR_2128 amplified by PCR with primer set 3¨C4 and primer set 5¨C6, respectively (Table S1) were fused bycrossover PCR technique. The resulting amplicon was ligated to pCR725, which was subsequently transferred to C. glutamicum. Gene disruption was confirmed by PCR and DNA sequencing.¡± ÎÒÊÇ·Ö×Ó·½ÃæµÄÐÂÈË£¬¸Õ¿ªÊ¼Ñ§Ï°¡£ Õâ¶Î»°´ó¸ÅµÄÒâ˼¶®ÁË£¬È»ºóÓм¸¸öµã²»Ì«Ã÷°×£¬ÇóÖúһϣ¬Ï£Íû´ó¼Ò°ï°ïæ¡£ 1."ÓÃ×ÔÉ±ÔØÌåÍ¬Ô´ÖØ×é½øÐÐÎÞ±ê¼ÇµÄ»ùÒòÇóý"¾ßÌåÊÇʲôÒâ˼£¿ 2."crossover PCR technique"ÊÇʲô¼¼Êõ£¿ 3."The resulting amplicon was ligated to pCR725, which was subsequently transferred to C. glutamicum. "֮ǰÒѾÓв½ÖèÇóý»ùÒòÁË£¬ÎªÊ²Ã´»¹Ëµ"½«À©Ôö×ÓÁ¬½Óµ½ÖÊÁ£ÉÏ£¬×ªÈë¾úÖÐ" һͷÎíË®µÄ£¬Ï£Íû´ó¼ÒÖ¸µãһϣ¬Ð»Ð»Ð»Ð»¡£ |
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°Ù̬ÈËÉú: ½ð±Ò+15, ·ÒëEPI+1, ¡ïÓаïÖú 2016-07-03 19:17:56
°®ÓëÓêÏÂ: ½ð±Ò+1 2016-07-04 21:38:21
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Markerless gene disruption was carried out through a two-step homologous recombination using the suicide vector pCRA725 ¡°ÀûÓÃ×ÔÉ±ÔØÌåpCRA725£¬½øÐÐÁ½²½Ê½»ùÒòÍ¬Ô´ÖØ×飬´Ó¶øÊµÏÖÎÞºÛ»ùÒòÇóý¡± crossover PCR technique PCR£¨polymerase chain reaction£© technique ʵ¼ÊÉÏÊÇÒ»ÖÖ¡°»ùÒòÀ©Ôö¼¼Êõ¡±¡£´Ó×ÖÃæÀí½â¾ÍÊÇ¡°¾ÛºÏøÁ¬·´Ó¦¡±¼¼Êõ Ç°Ãæ¼ÓÉÏ¡°crossover¡±½»²æ£¬Ò²¾ÍÊÇ¡°¾ÛºÏøÁ¬·´Ó¦¡±¼¼Êõ The resulting amplicon was ligated to pCR725, which was subsequently transferred to C. glutamicum. ½«²úÉúµÄÀ©Ôö²úÎïÀ¦°óÔÚpCR725(×ÔÉ±ÔØÌå)ÉÏ£¬È»ºó½«Æä×ªÒÆµ½C. glutamicum |
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- Ìû×Ó: 1665
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