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¼ö»ê±â(OH)
ÀÛ¼ºÀÚ : °ü¸®ÀÚ(ks@biozonekorea.com)   ÀÛ¼ºÀÏ : 2006.05.10   Á¶È¸¼ö : 3937
Hydroxyl Radical(¼ö»ê±â)

The hydroxyl radical"OH" is the neutral form of the hydroxide ion.
ÇÏÀ̵å·Ï½Ç ·¡µðÄÃÀº OH·Î¼­ ÇÏÀ̵å·Ï»çÀ̵å ÀÌ¿ÂÀÇ Áß¼º »óŸ¦ ¸»ÇÕ´Ï´Ù.

Hydroxyl radicals are highly reactive and consequently short lived, however they form an important part of radical chemistry.
ÇÏÀ̵å·Ï½Ç ·¡µðÄÃÀº ³ô°Ô ¹ÝÀÀÇÏ°í µû¶ó¼­ ¼ö¸íÀÌ Âª½À´Ï´Ù. ±×¸®°í ÀÌ°ÍÀº ·¡µðÄà ȭÇп¡¼­ Áß¿äÇÑ ºÎºÐÀÔ´Ï´Ù.

Most notably hydroxyl radicals are produced from the decomposition of hydro-peroxides (ROOH) or, importantly in atmospheric chemistry, by the reaction of excited atomic oxygen with water.
°¡Àå ÁÖ¸ñÇÒ ¸¸ÇÑ ¼ö»ê±â(OH)´Â ÇÏÀ̵å·Î ÆÛ·Ï»çÀ̵å(¾ËÄÚ¿Ã)³ª ¶ÇÇÑ ´ë±â È­Çп¡¼­ Áß¿äÇÑ ¼öºÐ(¹° ºÐÀÚ)°ú ÇÔ²² »ê¼Ò ¿øÀÚ¿Í µé¶á ¹ÝÀÀ¿¡ ÀÇÇØ ºÐÇصǴ °úÁ¤¿¡¼­ ¸¸µé¾î Áý´Ï´Ù.

In the troposphere the hydroxyl radical acts like a detergent, reacting with carbon monoxide, methane and other hydrocarbons and so oxidizing them to form water and carbon dioxide.
´ë·ù±Ç¿¡¼­ ÇÏÀ̵å·Ï½Ç ·¡µðÄà ¿ªÈ°Àº ÀÏ»êȭź¼Ò, ¸Þź°ú ¶Ç´Ù¸¥ źȭ¼ö¼Ò ±×¸®°í ¹° ºÐÀÚÀÇ »óÅ·Π»êÈ­½ÃÄÑ Ã»¼Ò¸¦ ÇØÁÖ´Â ¼¼Ã´Á¦¿Í À¯»çÇÕ´Ï´Ù.

The very short in vivo half-life of approx. 10-9 s and its high reactivity renders it a very dangerous compound to the organism.
ÀÌ ¼ö»ê±â ·¡µðÄÃÀº ´ë·« 1¾ïºÐÀÇ 1ÃÊ ¶ó´Â ¸Å¿ì ªÀº ¹Ý°¨±â¸¦ °¡Áö°í ÀÖÀ¸¸ç ÀÎü¿¡ ¸Å¿ì À§ÇèÇÑ À¯±âÈ­ÇÕ¹°¿¡ ³ôÀº ¹ÝÀÀ¼ºÀ» ³ªÅ¸³À´Ï´Ù.

Unlike superoxide which can be detoxified by superoxide dismutase it cannot be eliminated by an enzymatic reaction as this would require its diffusion to the enzyme"s active site.
½´ÆÛ¿Á»çÀ̵å¿Í´Â ´Þ¸® ¼ö»ê±â´Â ½´ÆÛ¿Á»çÀ̵忡 ´ëÇÑ Ç×»êÈ­Á¦·Î¼­ Çص¶ ÀÛ¿ëÀ» ÇÒ ¼ö ÀÖÀ¸¸ç ÀÌ°ÍÀº È¿¼Ò¿¡¼­ ó·³ ¹ÝÀÀ¿¡ ÀÇÇؼ­ Á¦°ÅµÉ ¼ö´Â ¾øÁö¸¸ È¿¼ÒÀÇ È°µ¿ ¿µ¿ª¿¡¼­ È®»êÀ» ¿ä±¸ÇÒ °ÍÀÔ´Ï´Ù.

As diffusion is slower than the half life of the molecule it will react with any oxidizable compound in vicinity.
È®»êÀº ºÐÀÚÀÇ ¹Ý°¨±âº¸´Ù ´õ¿í ´õ ´À¸®°Ô ³ªÅ¸³ª¸ç ±× ÁÖÀ§¿¡ ÀÖ´Â »êÈ­ÇÒ ¼ö ÀÖ´Â ¾î¶² È­ÇÕ¹°°úµµ ¹ÝÀÀÇÒ °ÍÀÔ´Ï´Ù.

The only means to protect important cellular structures is the use of antioxidants such as glutathione and of effective repair systems.
ÀÌ Àǹ̴ ±Û·çŸġ¿Â(Ç×»êÈ­Á¦)°ú °°Àº ±×·¯ÇÑ »êÈ­¹æÁöÁ¦(³ëÈ­ ¹æÁöÁ¦)·Î »ç¿ëµÇ¾î ±Û·çŸġ¿Â(Ç×»êÈ­Á¦ÀÇ ÀÏÁ¾)°ú °°ÀÌ ¼¼Æ÷¸¦ Àç»ýÇÏ´Â È¿°ú·Î Áß¿äÇÑ ¼¼Æ÷ ±¸Á¶¸¦ º¸È£ÇÏ´Â °ÍÀÔ´Ï´Ù.
ÀÌÀü±Û ´ë±â Áß À¯ÇØ ¿À¿°¹°ÁúÀ» ºÐÇØ Á¦°ÅÇÏ´Â ¼ö»ê±â(OH)·Î ½Ç³» ..
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