| ²é¿´: 1020 | »Ø¸´: 3 | ||
pxyboy½ð³æ (СÓÐÃûÆø)
|
[ÇóÖú]
Çë³æÓѰïÎÒ¿´ÏÂÂÛÎĶþÉóµÄÒâ¼û ÒÑÓÐ2È˲ÎÓë
|
|
ǰ¶Îʱ¼äͶÁËһƪ2·Ö¶àµÄsciÔÓÖ¾£¬ÎÄÕÂÆäÖÐÒ»¿éÄÚÈÝÊÇÓÃpUC19ÔØÌå¹¹½¨ÖØ×éÖÊÁ££¬²åÈëʧ»îÈéËá¾úµÄÒ»¶Î»ùÒò¡£½á¹ûÆäÖÐÒ»¸öÆÀÉóÈ˶Խá¹ûÌáÁËÒÉÎÊ£¬Ö÷ÒªÊǶԲåÈëʧ»îµÄ»ùÒòƬ¶ÎÊÇ·ñÕæÕýÕûºÏµ½»ùÒò×éÉÏÁËÓÐÒÉÎÊ£¬ÈÃÎÒÌύȷʵµÄÖ¤¾Ý£¬È»ºóÎÒµÚÒ»´Î»Ø¸´ËûµÄʱºò£¬°ÑÒ°ÉúÐ;úºÍ¹¤³Ì¾úÌá»ùÒò×éºó·Ö±ðÀ©ÔöÄ¿µÄ»ùÒò£¬Í¨¹ý¶þÕ߯¬¶Î´óС²»Ò»Ö£¨¹¤³Ì¾ú³¤¶È¶àÁ˶βåÈëµÄ¿¹ÐÔ»ùÒò£©À´Ö§³ÖÎÒµÄÂÛÎÄ¡£½á¹ûÓÖ·µ»ØÀ´¶þÐÞµÄÒâ¼û£¬»¹ÊÇÕâ¸öÆÀÉóÈËÓÐÒÉÎÊ£¬ÈÔÈ»ÊǶÔÕâ¸öÎÊÌâÓÐÒÉÎÊ£¬¾ßÌåÈçÏ£¬ÇëÕ½ÓѰïÎÒһϣ¬ÈçºÎ»Ø¸´Õâ¸öÆÀÉóÈË£¬ÏÈл¹ýÁË£¡ The authors haveaddressed my concern about the missing proof for a true knock-out with a newPCR based experiment, showing basically two bands from wildtype and mutant,differing by the size of the Erythromycin gene insert. However, for a fulldesciption of the mutant construction some point are still missing: First,can the authors verify that the plasmid is not replicating in the host strain?The cited literature does not provide this information, so a citation whichstates that ColE1 type replicons cannot replicate in Lactobacillus would benecessary. If this is not clear from the literature, additional experimentwould be needed to verify this. Second, and related to the first point, usuallythe first step of a knock-out generation is the formation of a merodiploidafter a first homologous recombination, integrating the whole plasmid into thegenome. Usually a counterselection via a suicide gene on the plasmid is used,to select the true mutants from the merodiploids. This was obviously not donein this case, so the question remains, if the resulting strain is a knock-outor a merodiploid. A very easy test would be to screen the mutants for the presenceof the Amp gene, which is on the plasmid and would be gone in a true mutant. Third, for characterization of a mutant, acomplementation experiment is necessary, to exclude downstream effects of theintroduced knock-out gene (EryR) on other genes. In this case a merodiploidwould be usful as here one intact copy of the gene is present followed by theintegrated plasmid, so downstream effects should be visible in a merodiploidwhile an effect of the gene knock-out should not be visible. Alternatively theauthors can perhaps use their pMG76e-mur plasmid to create a complementedmutant. In any case this complemented mutant should be included in thephenotypic testing and should behave more or less like the wildtype to provethat the observed effect is really due to the knock-out of the mur gene aloneand nothing else plays a role for the observed phenotype. |
» ²ÂÄãϲ»¶
ÖþÀÎÓªÑø°²È«ÏߣºÒÔ¾«×¼¼ì²â£¬»¤½¡¿µ»ùʯ
ÒѾÓÐ0È˻ظ´
ÍÆ¼öһЩ20ÖÖ°±»ùËá¼ì²âµÄʵ¼ÊÓ¦Óð¸Àý
ÒѾÓÐ0È˻ظ´
»¯Ñ§¹¤³Ì¼°¹¤Òµ»¯Ñ§ÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ105È˻ظ´
²»ºÏÀíÍÜ¿ÆÑÐʵÑéÖеÄȤÊ£ºÊµÑéÆ÷²ÄµÄ ¡°ÎÚÁú¡±
ÒѾÓÐ0È˻ظ´
²»ºÏÀíÍÜ¿ÆÑÐʵÑéÖеÄȤÊ£ººÍʵÑé²ÄÁ쵀 ¡°¶·ÖǶ·Ó¡±
ÒѾÓÐ0È˻ظ´
µ°°×Öʼì²â£º¾«×¼·ÖÎö£¬½âËøÉúÎï·Ö×ÓµÄÃÜÂë
ÒѾÓÐ0È˻ظ´
²»ºÏÀíÍÜ¿ÆÑÐʵÑé֮СÊóʵÑ飺ÑϽ÷Éè¼Æ£¬½âÎöÉúÃü»úÖÆµÄÖØÒªÔØÌå
ÒѾÓÐ0È˻ظ´
²»ºÏÀíÍÜ¿ÆÑÐʵÑéÖ®ÖØ½ðÊô¼ì²â£º¾«×¼É¸²é£¬ÊØ»¤½¡¿µÓë»·¾³µÄ·ÀÏß
ÒѾÓÐ0È˻ظ´
²»ºÏÀíÍÜ¿ÆÑÐʵÑéÖ®¡°ÍܲâÖØ½ðÊôÎÒ±³¹øÈýǧ¡±
ÒѾÓÐ0È˻ظ´
²»ºÏÀíÍÜ¿ÆÑÐʵÑéÖ®¡°ÊóÌÓÈý´ÎÎÒ·¢ÈýƪSCI¡±
ÒѾÓÐ0È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
ÇëÇó³æÓѰïÎÒ²éÁ½ÆªÎÄÕÂÊÇ·ñ±»EI¼ìË÷£¬ÔÚÏߵȣ¬¼±
ÒѾÓÐ4È˻ظ´
Ͷ¸åIET RSN±»Reject with resubmit£¬Ë³±ãÇë¸÷λ³æÓѰïæ¿´¿´Õâ¸öÉó¸åÒâ¼û
ÒѾÓÐ5È˻ظ´
Âé·³ÄÄλ³æÓѰï²éÏÂÕâÆªÂÛÎÄÊÇ·ñ±»ISSHP¼ìË÷
ÒѾÓÐ4È˻ظ´
һƪ¾Ü¸åÐÅ£¬Çë¸÷λ³æÓѰï·ÖÎöÏÂ
ÒѾÓÐ12È˻ظ´
ÂÛÎĶþÉóµÄÆÀÉóר¼Ò
ÒѾÓÐ11È˻ظ´
¶þÉ󷵻غóÓиöÉó¸åÈ˵ÄÒâ¼ûûд£¬ÊÇͬÒâ³ö°æÁË»¹ÊÇʲôµÄ°¡£¿
ÒѾÓÐ8È˻ظ´
ÂÛÎĶþÉóºó£¬»¹ÓÐûÓÐÉó¸åÒâ¼û£¿
ÒѾÓÐ5È˻ظ´
Âé·³¸÷λ³æÓѰï²éѯһÏÂÕâÆªÎÄÕµÄÊÕ¼Çé¿öÂллÁË¡£
ÒѾÓÐ5È˻ظ´
¶þÉóÉó¸åÈ˵ķµ»ØÒâ¼û£¬Õâ¾ä»°Ê²Ã´Òâ˼¡£
ÒѾÓÐ12È˻ظ´
¡¾ÇóÖú¡¿Ò»ÆªSCIÎÄÕµĶþÉóÒâ¼û£¬¹òÇó¼ø¶¨£¡
ÒѾÓÐ6È˻ظ´
±¯´ß£¡ÂÛÎĶþÉ󱻾ܣ¡
ÒѾÓÐ14È˻ظ´
MMTA Ò»ÉóÒâ¼ûÈçÏ£¬Çë¸ßÊÖ°ï¿´¿´¶þÉó¼Óü¸ÂÊ´óÂð£¿Ò»°ã¶þÉ󱻾ܵĸÅÂʶà´óÄØ£¿
ÒѾÓÐ6È˻ظ´
materials lettersÉó¸åÒâ¼û£¬Çë³æÓѰïÎÒ¿´¿´
ÒѾÓÐ7È˻ظ´
Çë³æÓѰïÎÒ¿´Ò»ÏÂÕâ¸öÔÓÖ¾ÊÇSCIÆÚ¿¯Â𣿣¨Arabian journal of mathematics£©
ÒѾÓÐ7È˻ظ´
¶þÉó½á¹û»¹ÊÇСÐÞ£¬Ò»ÌõÉó¸åÒâ¼û¿´²»¶®£¬Çó´Í½Ì£¡
ÒѾÓÐ8È˻ظ´
¶þÉóÕâÖÖÇé¿öÔõô°ì£¿
ÒѾÓÐ9È˻ظ´
ÂÛÎĶþÉó¿ì5¸öÔÂÁË£¬ÇóÖú
ÒѾÓÐ5È˻ظ´
Talanta ¶þÉ󱻾ܣ¬ÎªÊ²Ã´£¿
ÒѾÓÐ11È˻ظ´
Âé·³¸÷λ³æÓѰïÎÒÈ·ÈÏһϱ༵ÄÓʼþÄÚÈÝ
ÒѾÓÐ5È˻ظ´
×òÌì´ß¸å£¬½ñÌìÊÕµ½»ØÐÅ£¬²»¶®Ê²Ã´Òâ˼£¬³æÓѰïæ¿´ÏÂ~
ÒѾÓÐ16È˻ظ´
¡¾ÇóÖú¡¿Ç볤´ºÓ¦Óû¯Ñ§Ñо¿ËùµÄ³æÓѰïϲ©Ê¿ÂÛÎÄ¡¾ÓÐЧÆÚÖÁ2011Äê5ÔÂ21ºÅ¡¿
ÒѾÓÐ11È˻ظ´
Âé·³ºÃÐĵijæÓѰïÎÒ¿´ÏÂÕâÆªÂÛÎÄÓÐû±»cpci-s£¨ÔISTP£©ÊÕ¼°É£¬Ð»Ð»
ÒѾÓÐ11È˻ظ´
ÂÛÎĶþÉó·µ»Ø ²»Ïë¸Ä£¡£¡
ÒѾÓÐ25È˻ظ´
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
| ½«À©Ôöµ½µÄƬ¶ÎËͲâÐò£¬ÕâÑù¾ÍÈ·ÇÐÎÞÒÉÁË¡£ |

2Â¥2014-05-28 11:18:51
Öì¶àÁú
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 40 (СѧÉú)
- ½ð±Ò: 4389.8
- ºì»¨: 10
- Ìû×Ó: 221
- ÔÚÏß: 389.2Сʱ
- ³æºÅ: 2055828
- ×¢²á: 2012-10-12
- ÐÔ±ð: GG
- רҵ: ΢ÉúÎïÉúÀíÓëÉúÎﻯѧ
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
pxyboy: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¶ÔÎÒ°ïÖúºÜ´ó£¬Ð»Ð» 2014-05-29 14:49:51
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
pxyboy: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¶ÔÎÒ°ïÖúºÜ´ó£¬Ð»Ð» 2014-05-29 14:49:51
|
1 È·¶¨Ê¹ÓÃpUC19¹¹½¨µÄÔØÌå¿ÉÒÔÔÚÈéËá¾úÖÐÓÃÓÚ´ò°Ð£¿²»ÄÜÔÙÈéËá¾úÖи´ÖÆÂð£¿Ã²ËÆÎÒ»¹Ã»¼û¹ýÒÔpUC19×öΪ»ù´¡ÖÊÁ£ÓÃÓÚ¹¹½¨ÈéËá¾ú»ùÒòÇóýÔØÌåµÄ¡£¿ÉÒÔpcrÀ©Ôöºó²âÐò¡£ 2 ÐèÒª°Ñµ¥½»»»µ½Ë«½»»»ÕâÒ»²½É¸Ñ¡µÄ¹ý³ÌÏêϸÃèÊö³öÀ´¡£ 3 »Ø²¹ÊµÑ鱨ÐëÒª×ö¡£ºìÃ¹ËØµÄÕýɸ±êǩûɾȥ£¬ÊÇ·ñ»áÓ°Ïì¾úÖêµÄһЩÆäËü»ùÒòÕý³£±í´ïÄØ£¿ÊÇ·ñÓÉÓÚºìÃ¹ËØµÄÔÒòÔì³ÉµÄ£¿ËùÒÔ±ØÐë»Ø²¹Çóý»ùÒò¡£Èç¹û¿ÉÒÔ£¬×îºÃ°Ñery»ùÒòÄÃÏ¡£ |
3Â¥2014-05-28 13:07:02
pxyboy
½ð³æ (СÓÐÃûÆø)
- Ó¦Öú: 2 (Ó×¶ùÔ°)
- ½ð±Ò: 516.6
- Ìû×Ó: 171
- ÔÚÏß: 99Сʱ
- ³æºÅ: 62386
- ×¢²á: 2005-03-16
- רҵ: ʳƷ¼Ó¹¤¼¼Êõ
4Â¥2014-05-29 14:49:08













»Ø¸´´ËÂ¥