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  ¿À¿µ¹Î 2003-01-12 23:21:07 | Hit : 4429 | Vote : 1134
Subject   ¥ë phage DNA molecule
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# Gene organization in the ¥ë DNA molecule
* head-and-tail phage
* 49 kb in size
* ¥ë genetic mapÀÇ Æ¯Â¡Àº genome¿¡¼­ °¡´É¿¡ ¿¬°üµÈ gene³¢¸® ÇÔ²² clusterµÇ¾î ÀÖ´Ù´Â °ÍÀÌ´Ù.
--> relating geneÀÇ clusteringÀº individually º¸´Ù groupÀ¸·Î¼­ geneÀÇ switch on/off¿¡ ÀÇÇØ ¥ë genomeÀÇ expressionÀÇ control¿¡ Áß¿äÇÏ´Ù.

# The linear and circular forms of ¥ë DNA
* ¥ë phageÀÇ DNA moleculeÀº linearÀÌ´Ù.
* phage head structure¿¡¼­ ³ªÅ¸³ª´Â µÎ°³ÀÇ free end¸¦ °¡Áø DNAÀÌ´Ù.
* linear moleculeÀº base-pairingÀ» ÀÌ·ç´Â double stranded DNAÀÎ µÎ°³ÀÇ complementary strand·Î ±¸¼º
* moleculeÀÇ ³¡Àº 12°³ÀÇ nucleotide stretchÀÎ single strandÀÌ´Ù. µÎ°³ÀÇ single strand´Â complementaryÇÏ¿© base pairingÀÌ °¡´ÉÇÏ¿© circular formÀ» ÀÌ·ï ¿Ïº®ÇÑ double strand moleculeÀ» ÀÌ·é´Ù.
* sticky end (=cohesive end)
±×µé »çÀÌÀÇ base pairingÀÌ DNA moleculeÀÇ µÎ ³¡ÀÌ ÇÔ²² ºÙÀ» ¼ö À־ complementary single strandÀ̶ó ĪÇÑ´Ù.
* cos site (¥ë cohesive end)
- bacterial genome¿¡ insertion Çϱâ À§ÇÑ Çʼö prerequisite linear DNA molecule --> cell ¾ÈÀ¸·Î µé¾î°¡¼­ circularised µÈ´Ù.
- prophage ÈÄ¿¡ host genome¿¡¼­ À߸° ÈÄ, ¸¹Àº »õ·Î¿î ¥ë DNA moleculeÀÌ rolling circle mechanism of replication¿¡ ÀÇÇØ »ý»êµÈ´Ù. --> continuous DNA strand°¡ template molecule¿¡¼­ rolled off µÈ´Ù.
- cos site·Î join µÈ linear ¥ë genomeÀÇ series·Î ±¸¼ºµÈ catenaneÀÌ ³ª¿Â´Ù.
- individual ¥ë genome(gene A)¿¡ ÀÇÇØ »ý»êµÈ endonuclease¿¡ ÀÇÇØ ÀÌ cos site°¡ recognition sequence·Î ÀÛ¿ëÇÑ´Ù.
- endonuclease´Â single-stranded sticky end¸¦ ¸¸µé¸ç, phage head structure¿¡ °¢ ¥ë genomeÀ» package Çϱâ À§ÇØ ´Ù¸¥ protein°ú conjugationÇÏ¿© ÀÛ¿ë

¡Å ¥ë genomeÀÇ internal regionÀÇ changing the structure´Â ¥ë genomeÀÇ Àüü ±æÀÌ°¡ ³Ê¹« ¸¹ÀÌ ¹Ù²îÁö ¾ÊÀ¸¸é ÀÌ»óÀÌ ¾ø´Ù.


No Category   Subject Date Hit
16991 ºÐÀÚ»ý¹°ÇÐ   Mutation  [85] 2003/02/16 10901
16990 ºÐÀÚ»ý¹°ÇÐ   Lysosome  [81] 2003/02/16 5583
16989 µ¿¹°»ý¸®ÇÐ   homeostasis  [87] 2003/02/16 11051
16988 ºÐÀÚ»ý¹°ÇÐ   Viruses¶õ ?  [87] 2003/02/16 8724
16987 ºÐÀÚ»ý¹°ÇÐ   DNA(RNA)°¡ À¯Àü¹°ÁúÀ̶ó´Â Áõ°Å  [84] 2003/02/16 11959
16986 ºÐÀÚ»ý¹°ÇÐ   À¯Àü¹°Áú ¹ß°ßÀÇ ¿ª»ç  [92] 2003/02/16 6559
16985 ºÐÀÚ»ý¹°ÇÐ   Çö󽺹̵å DNAÀÇ Áغñ  [957] 2003/02/15 10959
16984 ºÐÀÚ»ý¹°ÇÐ   »ì¾ÆÀÖ´Â ¼¼Æ÷¿¡¼­ Àüü ¼¼Æ÷ DNA¸¦ Á¤Á¦ÇÏ´Â ±âº»¿ø¸®  [209] 2003/02/11 22747
16983 ºÐÀÚ»ý¹°ÇÐ   Çʶó¸àÆ®Çü M13 ÆäÀÌÁö ±âº»¼³¸í  [98] 2003/02/11 4131
16982 ºÐÀÚ»ý¹°ÇÐ   ¶÷´ÙÆäÀÌÁö(¥ë phage) DNA molecule  [77] 2003/02/11 3939
16981 ºÐÀÚ»ý¹°ÇÐ   ¿ëÇؼº ÆäÀÌÁö(Lysogenic phages)  [86] 2003/02/11 4877
16980 ºÐÀÚ»ý¹°ÇÐ   ¹ÚÅ׸®¿ÀÆäÀÌÁö(Bacteriophage) - lytic cycle ±âº»¿ø¸®  [81] 2003/02/11 3703
16979 ºÐÀÚ»ý¹°ÇÐ   GENE Ŭ·Î´×À» À§ÇÑ ¿î¹Ýü ¼³¸í- Çö󽺹̵å¿Í ¹ÚÅ׸®¿ÀÆäÀÌÁö  [81] 2003/02/11 5390
16978 À¯Àü°øÇÐ   Manipulation fo purified DNA(Á¤Á¦µÈ DNAÀÇ Á¶ÀÛ)  [20] 2003/01/15 5492
16977 À¯Àü°øÇÐ   Preparation of bacteriophage DNA  [4423] 2003/01/14 5900
16976 À¯Àü°øÇÐ   Preparation of plasmid DNA  [31] 2003/01/13 12759
16975 À¯Àü°øÇÐ   Purification of total cell DNA from living cells  [634] 2003/01/13 19760
16974 À¯Àü°øÇÐ   M13 - a filamentous phage  [31] 2003/01/12 3992
À¯Àü°øÇÐ   ¥ë phage DNA molecule  [37] 2003/01/12 4429
16972 À¯Àü°øÇÐ   Lysogenic phages  [39] 2003/01/12 6605
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