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Structure of mammalian AMPK and its regulation by ADP

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CEFP °ü¸®ÀÚ (mewin007@snu.ac.kr)

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2011-10-21 10:35:45

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Xiao B, Sanders MJ, Underwood E, Heath R, Mayer F, Carmena D, Jing C, Walker PA, Eccleston J, Haire LF, Saiu P, Howell SA, Aasland R, Martin SR, Carling D, and Gamblin SJ. (2011) Structure of mammalian AMPK and its regulation by ADP. Nature 472:230-233


: Heterotrimeric AMP-activated protein kinase(AMPK)´Â ÁøÇÙ¼¼Æ÷ÀÇ ´Ù¾çÇÑ ¼¼Æ÷»ý¸®Çö»ó¿¡ °ü¿©ÇÏ´Â kinase ÀÌ´Ù. ƯÈ÷, º» ¿¬±¸¼¾ÅÍÀÇ °á°ú¿¡ ÀÇÇÏ¿© AMPK´Â °õÆÎÀÌ º´¿ø¼º¿¡µµ ±í°Ô °ü¿©ÇÏ°í ÀÖ´Â È¿¼Ò·Î ¾Ë·ÁÁ® Àֱ⿡ ÁÖ¿ä ¿¬±¸ ´ë»óÀÌ µÇ¾î ¿Ô´Ù. º» ³í¹®¿¡¼­´Â ±âÁ¸¿¡ ¾Ë·ÁÁø AMPKÀÇ ±â´É°ú ±¸Á¶ ¿¬±¸¿¡¼­ Ç×»ó Àǹ®½Ã µÇ¾ú´ø, kinase ¹× ´Ù¾çÇÑ allosteric effect¸¦ ´Ü¹éÁú »ïÂ÷±¸Á¶ ¹× »ýÈ­ÇÐÀû ½ÇÇèÀ¸·Î Á¦¾ÈÇÏ°í ÀÖ´Ù. ƯÈ÷, gamma-subunit¿¡ ADP ºÐÀÚ°¡ °áÇÕÇÏ¿© alpha-subunit¿¡ ÀÖ´Â activation loopÀÇ ±¸Á¶¸¦ º¯È­ÇÏ¿© kinase È°¼ºÈ­¿¡ ÁÖ¿äÇÑ ¿ªÇÒÀ» ´ã´çÇÏ´Â Thr-172 Àܱ⸦ º¸È£ÇÏ´Â ÇüŸ¦ º¸ÀÌ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ±¸Á¶Àû º¯È­´Â AMPK È°¼º¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â dephsphorylation ÀÌ Thr-172Àܱ⿡¼­ ¹ß»ýÄ¡ ¾Ê´Â º¯È­¸¦ ¾ß±âÇϱ⿡ ±× µ¿¾È ¾Ë·ÁÁöÁö ¾Ê¾Ò´ø, ±âÁú¿¡ ÀÇÇÑ kinase È°¼ºÀÇ Á¶Àý¿¡ ´ëÇÑ Á÷Á¢ÀûÀÎ Áõ°Å¸¦ º¸ÀÌ°í ÀÖ´Ù.

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