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  neo 2003-02-20 11:49:58 | Hit : 20384 | Vote : 14922
Subject   Á¦ÇÑÈ¿¼ÒÀýÆí±æÀÌ´ÙÇü¼º(RFLP)
Á¦ÇÑÈ¿¼ÒÀýÆí±æÀÌ´ÙÇü¼º(RFLP)

1. Á¦ÇÑÈ¿¼ÒÀýÆí±æÀÌ´ÙÇü¼ºÀ̶õ?
Restriction Fragment Length Polymorphism(RFLP)´Â 1980³â Bostein°ú ±×ÀÇ µ¿·áµéÀÌ Á¦ÇÑÈ¿¼Ò(Restriction endonuclease)ÀÇ °¡°èÁöµµ¸¦ ÀÛ¼ºÇÏ´Ù°¡ óÀ½ ¹ß°ßÇÏ¿´´Ù.
ÀÌ°ÍÀº ƯÁ¤ºÎÀ§ÀÇ Á¡ µ¹¿¬º¯ÀÌ(point mutation)¿¡ ÀÇÇØ Á¦ÇÑÈ¿¼Ò·Î Àý´ÜÇÏ¿´À» ¶§ »ý±â´Â ÀýÆíµéÀÇ ±æÀÌ°¡ »ç¶÷¸¶´Ù ´Ù¾çÇÏ°Ô ³ªÅ¸³ª´Â DNAÀÇ ´ÙÇü¼ºÀÌ´Ù.
»ç¶÷ÀÇ °Ô³ð ³»¿¡¼­ ´ÜÀÏ ¿°±â½ÖÀÇ º¯ÀÌ´Â »ó´çÈ÷ ºó¹øÇÏ¿©, ÀϺδ 1000bp Áß Çѹø ²Ã·Î ³ªÅ¸³­´Ù.
ÀÌ·± Á¡ µ¹¿¬º¯ÀÌ´Â Á¦ÇÑÈ¿¼Ò°¡ ÀÎÁöÇÏ´Â ¿°±â¼­¿­¿¡ ¹ß»ýÇÏ¿© Á¦ÇÑÈ¿¼ÒÀÇ ÀÎÁöºÎÀ§°¡ »õ·Î »ý¼ºµÇ°Å³ª ¶Ç´Â ÇöÁ¸ÇÏ´Â Á¦ÇÑÈ¿¼Ò ÀÎÁöºÎÀ§°¡ ¼Ò½ÇµÇ¾î Á¦ÇÑÈ¿¼Ò¿¡ ÀÇÇÑ DNAÀÇ ÀýÆí¾ç»óÀÌ ´Þ¶óÁö°í ÀÌ°ÍÀº Àü±â¿µµ¿À» ÅëÇÏ¿© ½±°Ô °¨ÁöµÉ ¼ö ÀÖ´Â °ÍÀÌ´Ù.

2. RFLPÀÇ ¿ø¸®
Á¦ÇÑÈ¿¼ÒµéÀº ¸î °³ÀÇ Æ¯Á¤ ¿°±â¼ø¼­¸¦ ÀÎÁöÇÏ¿© ±× ¾ÈÀ̳ª ºÎ±Ù¿¡¼­ DNAÀÇ ÀÌÁß³ª¼±À» °¡À§°¡ ½ÇÀ» ÀÚ¸£µí Àý´ÜÇÑ´Ù.
¿¹¸¦ µé¾î Bgl II ´Â AGATCT¸¦ ÀÎÁöÇÏ¿© A-G»çÀ̸¦ ÀÚ¸¥´Ù.
±×·¯¹Ç·Î ACATCT ¡æ AGATCT·Î Á¡ µ¹¿¬º¯ÀÌ°¡ ÀϾ´Ù¸é Bgl II ´Â Á¦ÇÑÈ¿¼ÒÀÇ ÀÚ¸®¸¦ ÀÎÁöÇÏ¿© DNA ´ÜÆíÀ» Àý´ÜÇÑ´Ù.
¿¹¸¦ µé¾î, 5kbÀÇ DNA¿¡ Á¡µ¹¿¬º¯ÀÌ°¡ ¹ß»ýÇÏ¿© Bgl IIÀÇ Á¦ÇÑÈ¿¼ÒÀÇ ÀÚ¸®°¡ »ý±â°Ô µÈ´Ù.
±×¸®ÇÏ¿© µÎ°¡Áö ŸÀÔÀÇ ´ë¸³ÇüÁúÀÌ °üÂûµÇ´Âµ¥ µ¹¿¬º¯ÀÌ°¡ ÀϾÁö ¾Ê¾Æ Bgl II¿¡ Àß·ÁÁöÁö ¾Ê°Ô µÇ¾î ¿ø·¡ ±æÀÌÀÇ 5kbÀÇ ´ÜÆíÀ» °¡Áø ´ë¸³ÇüÁú 2(Allele 2)ÀÇ Å¸ÀÔ°ú µ¹¿¬º¯ÀÌ¿¡ ÀÇÇØ Á¦ÇÑÈ¿¼Ò Bgl IIÀÇÀÇ ÀÎÁöºÎÀ§°¡ »ý°Ü Àß·ÁÁø 3kb¿Í 2kb ´ÜÆíÀ» °¡Áø ´ë¸³ÇüÁú1 (Allele 1)ÀÇ Å¸ÀÔÀÌ »ý±â°Ô µÈ´Ù.
±×·¯¹Ç·Î ¾î¶² °³ÀÎÀÌ ¾ç ºÎ¸ð·ÎºÎÅÍ ¹°·¯¹ÞÀº DNA ¸ðµÎ¿¡ µ¹¿¬º¯À̸¦ °¡Áö¸é ¸ðµÎ Àß·ÁÁø ÇüÅÂÀÎ ´ë¸³ÇüÁú (Allele 1)ÀÇ ÇüÅ°¡ º¸ÀÌ°í, ÇÑÂÊ ºÎ¸ð·ÎºÎÅ͸¸ µ¹¿¬º¯À̸¦ ¹°·¯¹Þ¾ÒÀ¸¸é ÀϺθ¸ Àý´ÜµÈ ´ë¸³ÇüÁú 1+2(Allele 1=2)°¡ ³ªÅ¸³ª¸ç, ¸ðµÎ°¡ µ¹¿¬º¯ÀÌ°¡ ÀϾÁö ¾ÊÀ¸¸é ´ë¸³ÇüÁú 2·Î ³ªÅ¸³­´Ù.
ÀÌ·¸µí ÇϳªÀÇ Á¡ µ¹¿¬º¯ÀÌ¿¡ ÀÇÇØ Á¦ÇÑÈ¿¼Ò·Î Àý´ÜÇÏ¿´À» ¶§ »ý±â´Â ÀýÆíµéÀÇ ±æÀÌ°¡ »ç¶÷¸¶´Ù ´Ù¾çÇÑ Çö»óÀ» °üÂûÇÒ ¼ö ÀÖ´Ù.

3. RFLPÀÇ ÀÀ¿ë
¨ç À¯Àüº´ °ü·Ã marker·Î È°¿ë: DNA¸¦ ±Ù°Å·Î À¯ÀüÀÚ Áø´ÜÀº ¸¹Àº ÀåÁ¡À» °¡Áö°í ÀÖ´Ù.
RFLP°¡ À¯Àüº´ °ü·Ã À¯ÀüÀÚ ÁÂÀ§¿¡ Á¢±ÙÇÏ¸é ±× ÇÁ·Îºê´Â °áÇÔÀÇ °¡Á·¿¡¼­ µ¹¿¬º¯ÀÌÀÇ À¯ÀüÀ» ÃßÀûÇϴµ¥ »ç¿ëµÉ ¼ö ÀÖ´Ù.
±×·¯¹Ç·Î ±× °¡°è ³»¿¡¼­ ¾î¶² °¡Á·ÀÌ µ¹¿¬º¯À̸¦ Áö´Ï°í ÀÖ´ÂÁö¸¦ °áÁ¤ÇÒ ¼ö ÀÖ´Ù.
¨è ÀÌ·± DNAÀÇ ´ÙÇü¼ºÀº »ç¶÷¸¶´Ù ´Ù¸£°Ô ³ªÅ¸³ª¹Ç·Î °³Àνĺ° ¹× ¹ýÀÇÇÐÀûÀ¸·Î Àû¿ëµÈ´Ù.
* ¿À¿µ¹Î´Ô¿¡ ÀÇÇؼ­ °Ô½Ã¹° À̵¿µÇ¾ú½À´Ï´Ù (2004-05-08 18:13)


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