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1. °³¿ä
ºÐÀÚ»ý¹°ÇÐÀÇ ¹ßÀü°ú ´õºÒ¾î À¯Àü°øÇÐ ±â¼úµéÀÇ ¹ßÀüÀ» ÅëÇؼ ÇÕ¼º»ý¹°ÇÐ »ý¹°ÇÐÀû ½Ã½ºÅÛ ¿£Áö´Ï¾î¸µ ±â¼úÀº »ý¸í°øÇÐ ½Ã´ë¿¡ »õ·Î¿î »ê¾÷ ºÐ¾ß¸¦ âÃâÇÏ¸ç »ý¸í°úÇÐ »ê¾÷ÀÇ ¸ð½ÀÀ» ºü¸£°Ô º¯È½ÃÅ°°í ÀÖ´Ù. ƯÈ÷ ÇÕ¼º»ý¹°ÇÐÀº ¹ÙÀÌ¿ÀÀÇ¾à »Ó¸¸ ¾Æ´Ï¶ó White BT, Green BTÀÇ º»°ÝÀû ¼ºÀåÀ» °¡´ÉÄÉ ¸¸µé °ÍÀ¸·Î ±â´ëµÇ°í ÀÖ´Ù. ±× µ¿¾ÈÀÇ ÇÕ¼º»ý¹°ÇÐ ±â¹ÝÀÇ ±â¼úµéÀº ´ëÀå±Õ, È¿¸ð¿Í °°ÀÌ ´Ù¾çÇÑ genetic toolÀÌ È®¸³µÇ¾î ÀÖ´Â ¹Ì»ý¹°¿¡ ±â¹ÝÇؼ °³¹ß ¹× ÀÀ¿ëÀÌ µÇ¾î¿À°í ÀÖ¾ú´Âµ¥, Á¡Â÷ Bacillus subtilis, Pichia pastoris, Streptomyces avermitilis, cyanobacteria±îÁö ±× ´ë»ó ¹Ì»ý¹°ÀÇ ¹üÀ§°¡ ³Ð¾îÁö°í ÀÖ´Ù.
Corynebacterium glutamicum (ÄÚ¸®³×¹ÚÅ׸®¿ò ±Û·çŸ¹ÌÄñ)Àº Æ÷ÀÚ¸¦ Çü¼ºÇÏÁö ¾Ê´Â ±×¶÷ ¾ç¼º±ÕÀ̸ç, º´¿ø¼ºÀÌ ¾ø´Â GRAS (Generally recognized as safe) ±ÕÁÖ·Î½á ´Ù¾çÇÑ L-¾Æ¹Ì³ë»ê, ÇÙ»ê µîÀ» »ý»êÇÏ´Â µ¥¿¡ »ê¾÷ÀûÀ¸·Î ³Î¸® »ç¿ëµÇ°í ÀÖ´Â À¯¿ëÇÑ »ê¾÷ ±ÕÁÖÀÌ´Ù.
¶ÇÇÑ ÄÚ¸®³×¹ÚÅ׸®¿òÀº ¾Æ¹Ì³ë»ê »ý»ê»Ó¸¸ ¾Æ´Ï¶ó ±×¶÷ ¾ç¼º±ÕÀÇ Æ¯¼ºÀ¸·Î ÀÎÇÑ ¿ëÀÌÇÑ ´Ü¹éÁú ºÐºñ »ý»ê¿¡¼µµ Å« ÀåÁ¡À» °¡Áö°í ÀÖ´Ù. ±×¸®°í ÇöÀçÀÇ ¾Æ¹Ì³ë»êÀ̳ª ´Ü¹éÁú »ý»êÀ» ³Ñ¾î ÄÚ¸®³×¹ÚÅ׸®¿òÀ» ÅëÇØ ´Ù¾çÇÑ ¹ÙÀÌ¿À ÈÇÕ¹°À» »ý»êÇÏ°íÀÚ ÇÏ´Â ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ°í ÀÖ´Ù. º» º¸°í¼¿¡¼´Â ÀÌ·¸°Ô À¯¿ëÇÑ »ê¾÷±ÕÁÖ Corynebacterium glutamicum (ÄÚ¸®³×¹ÚÅ׸®¿ò ±Û·çŸ¹ÌÄñ) ±â¹ÝÀÇ ÇÕ»ý»ý¹°ÇÐÀû ¿¬±¸ µ¿Çâ¿¡ ´ëÇؼ °íÂûÇØ º¸°íÀÚ ÇÑ´Ù.
2. ÄÚ¸®³×¹ÚÅ׸®¿ò tunable gene expression system ¿¬±¸ µ¿Çâ
ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ ´Ù¾çÇÑ ¸ñÇ¥ ÈÇÕ¹°À» °íÈ¿À²·Î »ý»êÇÏ·Á¸é ¸ñÇ¥ ÈÇÕ¹°·ÎÀÇ ´ë»ç È帧À» ÃÖÀûÀ¸·Î Á¶ÀýÇØÁÖ´Â °Í»Ó¸¸ ¾Æ´Ï¶ó ÇÊ¿ä¿¡ µû¶ó¼´Â »õ·Î¿î ÇÕ¼º ´ë»ç °æ·Î¸¦ ±¸ÃàÇØ¾ß Çϴµ¥ À̸¦ À§Çؼ´Â ´Ù¾çÇÑ À¯ÀüÀÚÀÇ ¹ßÇöÀ» Á¤±³ÇÏ°Ô Á¶ÀýÇÒ ¼ö ÀÖ´Â ±â¼úÀÌ ÇÊ¿äÇÏ´Ù. ±âÁ¸ ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ À¯ÀüÀÚ ¹ßÇö Á¶ÀýÀ» À§Çؼ´Â º¸Åë °ÇÑ ¹ßÇö Á¤µµ°¡ ¾Ë·ÁÁ® ÀÖ´Â ¸î¸î °³ÀÇ ÄÚ¸®³×¹ÚÅ׸®¿ò À¯·¡ÀÇ ÇÁ·Î¸ðÅÍ(PsodA, PgapA, Peftu, PcspB)³ª ´ëÀå±Õ À¯·¡ÀÇ ÇÁ·Î¸ðÅÍ(Plac, Ptrc, Ptac) µîÀÌ ÀÌ¿ëµÇ¾î ¿Ô´Ù. ÇÏÁö¸¸ °¢°¢ÀÇ ÇÁ·Î¸ðÅÍÀÇ »ó´ëÀûÀÎ ¼¼±â´Â Á÷Á¢ÀûÀ¸·Î ºñ±³µÈ ¹Ù°¡ ¾øÀ¸¸ç, °ÇÏ´Ù°í ¾Ë·ÁÁ® ÀÖ´Â ÇÁ·Î¸ðÅ͸¦ »ç¿ëÇÏ´õ¶óµµ 5¡¯UTR (untranslated region)°ú ¸ñÇ¥ À¯ÀüÀÚ ¼¿°úÀÇ Á¶ÇÕ µîÀÇ È¿°ú¿¡ ÀÇÇØ ´Þ¶óÁú ¼ö ÀÖ´Â ¹ßÇö È¿À² ¶§¹®¿¡ ´Ù¾çÇÑ ¼¼±âÀÇ À¯ÀüÀÚ ¹ßÇöÀ» ¸ñÇ¥·Î ÇÒ ¶§, ¸ñÇ¥ À¯ÀüÀÚ¿¡ ´ëÇؼ ÃÖÀûÀÇ ¼¼±â¸¦ º¸ÀÌ´Â °¢°¢ÀÇ ÇÁ·Î¸ðÅ͸¦ ¼±º°ÇÏ´Â °ÍÀÌ ¸Å¿ì ¾î·Á¿î ½ÇÁ¤À̾ú´Ù.
±×¸² 1. ÄÚ¸®³×¹ÚÅ׸®¿ò ±â¹Ý ÇÕ¼º ÇÁ·Î¸ðÅÍ ¶óÀ̺귯¸®ÀÇ ±¸Ãà ¹× FACS¸¦ ÅëÇÑ
´Ù¾çÇÑ ¼¼±âÀÇ ÇÁ·Î¸ðÅÍ ¹ß±¼
µû¶ó¼ ÀÌ·¯ÇÑ ¹®Á¦Á¡À» ÇØ°áÇÏ°íÀÚ 2013³â º» ¿¬±¸ÁøÀº ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ GFP¸¦ º¸°í ´Ü¹éÁú·Î È°¿ëÇÑ ÇÕ¼º ÇÁ·Î¸ðÅÍ ¶óÀ̺귯¸®¸¦ ±¸ÃàÇÏ¿´°í, À̸¦ FACS (Fluorescence-Activated Cell Sorting) screeningÀ» ÅëÇØ ´Ù¾çÇÑ ¼¼±â¸¦ º¸ÀÌ´Â constitutive ÇÕ¼º ÇÁ·Î¸ðÅ͵éÀ» ¹ß±¼ÇÒ ¼ö ÀÖ¾ú´Ù(±×¸² 1). ¿©±â¼ ¹ß±¼µÈ °ÅÀÇ ´ëºÎºÐÀÇ ÇÕ¼º ÇÁ·Î¸ðÅ͵éÀº 5¡¯UTRÀ» Æ÷ÇÔÇÏÁö ¾ÊÀ¸¸ç ¸ñÇ¥ À¯ÀüÀÚÀÇ ATG °³½ÃÄÚµ·ºÎÅÍ Àü»ç¸¦ ½ÃÀÛÇÏ´Â leaderless transcriptionÀ» º¸ÀÌ´Â °ÍÀ¸·Î È®ÀÎ µÇ¾ú´Âµ¥, leaderless transcription systemÀº °¢°¢ÀÇ ¸ñÇ¥ À¯ÀüÀÚÀÇ ¹ßÇö¿¡ ´ëÇؼ 5¡¯UTRÀÇ È¿°ú¸¦ ¹èÁ¦ÇÏ°í ÇÁ·Î¸ðÅÍÀÇ ¼¼±â¸¸À» °¡Áö°í ¿¹Ãø °¡´ÉÇÑ ¹ßÇö ½Ã½ºÅÛÀ» ±¸ÃàÇÒ ¼ö Àֱ⿡ ±âÁ¸ÀÇ »ç¿ëµÇ¾î¿À´ø À¯ÀüÀÚ ¹ßÇö ½Ã½ºÅÛ¿¡ ºñÇؼ ¸Å¿ì Å« ÀåÁ¡À» °¡Áø´Ù°í ÇÒ ¼ö ÀÖ°Ú´Ù. ¶ÇÇÑ ÃÖ±Ù¿¡´Â Rytter et al., 2014.¿¡¼ ÄÚ¸®³×¹ÚÅ׸®¿ò ÇÁ·Î¸ðÅ͵鿡¼ È®ÀÎµÈ consensus sequence¸¦ ÀÌ¿ëÇÏ¿© ´Ù¾çÇÑ Á¾·ùÀÇ ÇÕ¼º ÇÁ·Î¸ðÅÍ ¶óÀ̺귯¸®¸¦ ±¸ÃàÇÏ¿© ´Ù¾çÇÑ ¼¼±âÀÇ ÇÕ¼º ÇÁ·Î¸ðÅ͸¦ ±¸ÃàÇÏ¿´À» »Ó¸¸ ¾Æ´Ï¶ó, ´ëÀå±Õ lac ÇÁ·Î¸ðÅÍ¿¡ ±â¹ÝÇÑ ÇÁ·Î¸ðÅÍ ¶óÀ̺귯¸®¸¦ ÅëÇØ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ ´Ù¾çÇÑ ¼¼±â¸¦ º¸ÀÌ´Â IPTG-inducible ÇÁ·Î¸ðÅÍµé ¶ÇÇÑ °³¹ßÇßÀ½À» º¸°íÇÏ¿´´Ù.
Promoter ¿µ¿ª¿¡¼»Ó¸¸ ¾Æ´Ï¶ó ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ Á¡Á¡ ´õ ¸¹Àº DNA partµéÀÌ °³¹ßµÇ¸é¼ À̸¦ Á¶ÇÕÇؼ ½ÃÇèÇÏ°í »ç¿ëÇÒ ¼ö ÀÖµµ·Ï ÇØÁÙ ÇÕ¼º»ý¹°ÇÐ ±â¹ÝÀÇ plasmid platformÀÌ ÇÊ¿äÇÏ°Ô µÇ¾ú´Âµ¥ ÀÌ´Â 2012³â Ravasi et al., 2012.ÀÇ pTGR platform°ú 2014³â Kang et al., 2014.ÀÇ CoryneBrick platform¿¡ ÀÇÇؼ ±¸ÃàµÇ¾ú´Ù. µÎ platform ¸ðµÎ ¸ñÇ¥ À¯ÀüÀÚÀÇ ¹ßÇöÀ» À§ÇÑ ÇÁ·Î¸ðÅÍ, RBS, Terminator, Selection marker, E. coli origin, C. glutamicum origin µîÀ» Ư¼öÇÑ Á¦ÇÑ È¿¼Ò¸¦ ÅëÇؼ Á¶ÇÕÇÏ°í ½ÃÇèÇÒ ¼ö ÀÖ´Â ½Ã½ºÅÛÀÌ´Ù. ƯÈ÷ CoryneBrick platformÀº ¸ñÇ¥ À¯ÀüÀÚµéÀ» ¿øÇÏ´Â ´ë·Î Á¶ÇÕÇÏ°í Á¶¸³Çϱ⠽¬¿î BglBrick Ŭ·Î´× ¹æ¹ýÀ» µµÀÔÇÏ¿© ´õ °£ÆíÇÑ ÇÕ¼º»ý¹°ÇÐ ±â¹Ý plasmid platformÀ̶ó ÇÒ ¼ö ÀÖ°Ú´Ù.
3. ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ÀÇ metabolite biosensor ¿¬±¸ µ¿Çâ
ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ ¸ñÇ¥ metabolite¸¦ °íÈ¿À²·Î ´ë·®»ý»ê Çϱâ À§ÇØ ¸¹Àº ´ë»ç°øÇÐÀû Á¢±ÙÀÌ ÀÌ·ç¾îÁ³´Ù. ±×¸®°í ´ë»ç°øÇÐÀÇ ¿©·¯°¡Áö ÇÑ°èÁ¡À» ±Øº¹Çϱâ À§ÇØ ÇÕ¼º»ý¹°ÇÐ °³³äÀ» µµÀÔÇÏ¿© ´õ ºü¸£°í Á¤È®ÇÏ°Ô ¸ñÇ¥ ÈÇÕ¹° »ý»ê ½Ã½ºÅÛÀ» ±¸ÃàÇÏ°íÀÚ ÇÏ´Â ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ°í Àִµ¥ ´ëÇ¥ÀûÀ¸·Î ¼¼Æ÷ ³» Transcription factor¸¦ ÅëÇØ ¼¼Æ÷ ³»ÀÇ ´ë»ç»ê¹°ÀÇ ¾çÀ» °¨ÁöÇÏ´Â biosensor ½Ã½ºÅÛÀÌ ÀÖ´Ù. Biosensor ½Ã½ºÅÛÀº ¼¼Æ÷ ³»¿¡ Á¸ÀçÇÏ´Â ´ë»ç»ê¹°ÀÇ ¾çÀ» °¨ÁöÇÏ¿© ÇÊ¿äÇÑ À¯ÀüÀÚÀÇ ¹ßÇöÀ» Á¶ÀýÇÒ ¼ö Àִµ¥, À̸¦ ÀÌ¿ëÇÏ¿© ´ë»ç»ê¹°ÀÇ ¾çÀ» Çü±¤ ´Ü¹éÁúÀÇ ¹ßÇöÀ¸·Î ¿¬°áÇÏ¿© FACS¸¦ ÅëÇÏ¿© ºÐ¼®ÇÏ°í, ±×¸¦ ÅëÇØ ÃÖÀû À¯ÀüÀÚ ¹ßÇö ½Ã½ºÅÛ ±¸Ãà, È¿¼Ò engineering ¶Ç´Â genome engineeringÀ» high-throughputÀ¸·Î ¼öÇàÇÏ´Â ¿¬±¸°¡ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼µµ º¸°íµÇ¾ú´Ù.
±×¸² 2. ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ ¼¼Æ÷ ³» ¶óÀ̽Š³óµµ¿¡ µû¶ó¼ EYFP¸¦ ¹ßÇö½ÃÅ°´Â
¶óÀ̽Š¼¾¼ ½Ã½ºÅÛ
µ¶ÀÏÀÇ Lothar eggeling groupÀÌ ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ metabolite sensor¸¦ ÅëÇØ ¸¹Àº ¿¬±¸¸¦ ¼öÇàÇÏ°í Àִµ¥ ´ëÇ¥ÀûÀ¸·Î´Â ¼¼Æ÷ ³» ¶óÀ̽Š³óµµ°¡ ³ô¾ÆÁú¼ö·Ï ¶óÀ̽ÅÀ» ¼¼Æ÷ ¹ÛÀ¸·Î ¹èÃâÇϱâ À§ÇÑ ¶óÀ̽Šexporter LysEÀÇ ¹ßÇö¿¡ °ü·ÃµÈ LysG transcriptional regulator¿Í lysE À¯ÀüÀÚÀÇ ÇÁ·Î¸ðÅ͸¦ ÀÌ¿ëÇÏ¿© ¶óÀ̽Š³óµµ¿¡ µû¶ó EYFP¸¦ »ý»êÇÏ´Â ¶óÀ̽Š¼¾¼¸¦ ±¸ÃàÇÑ ¿¹°¡ ÀÖ´Ù. ±×¸®°í ÀÌ·¯ÇÑ ¾Æ¹Ì³ë»ê ¼¾¼¸¦ ÀÌ¿ëÇÏ¿© ÄÚ¸®³×¹ÚÅ׸®¿ò À¯Àüü µ¹¿¬º¯ÀÌ¿¡¼ ¶óÀ̽Š´ë·® »ý»ê¿¡ µµ¿òÀÌ µÇ´Â »õ·Î¿î mutation µîÀ» ½Äº°ÇÏ´Â ¿¬±¸, ¾ËÁö´Ñ¿¡ feedback inhibitionÀ» ´ú ¹Þ´Â ArgB È¿¼Ò¸¦ engineering ¿¬±¸ µîÀ» FACS¸¦ ÅëÇÏ¿© High-throughputÀ¸·Î ¼öÇàÇÏ¿© º¸°íÇÏ¿´´Ù (±×¸² 2). ÀÌ´Â ÇÕ¼º»ý¹°Çп¡ ±â¹ÝÇÑ À¯ÀüÀÚ ¹ßÇö ½Ã½ºÅÛ ±¸ÃàÀ» ÅëÇؼ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ ´ë»ç»ê¹°À» Á¤È®ÇÏ°Ô °¨ÁöÇÏ°í À̸¦ ÅëÇØ ´Ù¾çÇÑ engineeringÀ» ½Å¼ÓÇÏ°Ô ÇÒ ¼ö ÀÖ´Ù´Â °ÍÀ» º¸¿©ÁÖ´Â °á°ú¶ó ÇÒ ¼ö ÀÖ°Ú´Ù.
4. ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ ÇÕ¼º»ý¹°ÇÐ ±â¹Ý genome engineering ¿¬±¸ µ¿Çâ
±×¸² 3. ProphageÀÇ RecT recombinase¸¦ ÅëÇÑ genome engineering°ú
¶óÀ̽Š¹ÙÀÌ¿À ¼¾¼ ½Ã½ºÅÛÀ» ÀÌ¿ëÇÑ ÄÚ¸®³×¹ÚÅ׸®¿ò ±ÕÁÖ °³¹ß
ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ genome engineeringÀº ´ëü·Î ½Ã°£ÀÌ ¸¹ÀÌ µé°í ¼ÕÀÌ ¸¹ÀÌ °¡´Â ÀüÅëÀûÀÎ ¹æ¹ýÀ¸·Î homologous recombination¿¡ ÀÇÇÑ gene knock-out ȤÀº integrationÀ» ÅëÇؼ ÀÌ·ç¾îÁ®¿Ô´Ù. ÇÏÁö¸¸ ÃÖ±Ù Binder et al., 2013¿¡ º¸°íµÈ ¹Ù¿¡ µû¸£¸é single-strand DNA¿Í prophage recombinase RecT¸¦ ÀÌ¿ëÇÏ¿© genomeÀÇ Æ¯Á¤ÇÑ À§Ä¡¿¡ Á¤È®ÇÏ°Ô mutationÀ» ÀÏÀ¸Å°°í, ¸ñÇ¥·Î ÇÏ´Â ´ë»ç»ê¹°ÀÇ ¾çÀ» °¨ÁöÇÏ¿© ±× ¾ç¿¡ µû¶ó Çü±¤ ´Ü¹éÁúÀ» ¹ßÇöÇÏ´Â ¹ÙÀÌ¿À¼¾¼¸¦ ÇÔ²² ÀÌ¿ëÇÏ¿© À¯ÀÍÇÑ mutationÀ» °¡Áö´Â µ¹¿¬º¯À̸¦ FACS¸¦ ÅëÇÏ¿© ¹ß±¼Çس»´Â RecFACS ±â¼úÀÌ °³¹ßµÇ¾ú°í, À̸¦ ÅëÇØ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼µµ ´ÙÁßÀÇ genome engineeringÀÌ °¡´ÉÇÏ°Ô µÇ¾ú´Ù. ¶ÇÇÑ zinc-finger nucleases, transcription activator-like effector nucleases (TALENs) ±×¸®°í CRISPR-Cas nuclease system°ú °°Àº genome engineering tool ¶ÇÇÑ ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ ´õ È¿°úÀûÀÎ ±ÕÁÖ °³¹ß¿¡ ÀÀ¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î º¸ÀδÙ.
5. °íÂû
ÀÌ·¸µí ´Ù¾çÇÑ ÇÕ¼º»ý¹°ÇÐ ±â¹Ý genetic toolÀÌ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼µµ ±¸ÃàÀÌ µÇ°í ÀÖÀ¸¸ç, À̸¦ ÅëÇؼ ´õ¿í ´õ ½±°í ºü¸£°í È¿°úÀûÀÎ ÄÚ¸®³×¹ÚÅ׸®¿òÀÇ engineeringÀÌ ¿ëÀÌÇØÁö°í ÀÖ´Ù. ÇÏÁö¸¸ ¿©ÀüÈ÷ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ È°¿ë °¡´ÉÇÑ engineering toolÀº ´ëÀå±Õ ¹× È¿¸ð¿¡ ºñÇؼ ¸¹ÀÌ ºÎÁ·ÇÑ ½ÇÁ¤ÀÌ¸ç ¸¹Àº ¿¬±¸°¡ ´õ ÇÊ¿äÇÏ´Ù. ´ëÀå±Õ ¹× È¿¸ð¿¡ ºñÇؼ »ê¾÷¿ë ±ÕÁַμ Å« ÀåÁ¡À» Áö´Ñ ÄÚ¸®³×¹ÚÅ׸®¿ò¿¡¼ ´õ ´Ù¾çÇÑ ÇÕ¼º»ý¹°ÇÐÀûÀÎ genetic engineering toolÀÌ °³¹ßµÈ´Ù¸é White BT ºÐ¾ß¿¡ ¹ÌÄ¥ ¼ö ÀÖ´Â ÆıÞÈ¿°ú´Â ¸Å¿ì Ŭ °ÍÀ¸·Î ¿¹»óÇÑ´Ù.
Âü°í¹®Çå
1. ±èžï, ±è¼º¿ì. ÇÕ¼º»ý¹°ÇÐ (Synthetic biology) ¿¬±¸°³¹ß ¹× »ê¾÷È µ¿Çâ –
¹ÙÀÌ¿À»ê¾÷ ¹ü¿ë±â¼úÇ÷§Æû. »ý¸í°øÇÐÁ¤Ã¥¿¬±¸¼¾ÅÍ.
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