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Purification and Characterization of Lysyl Oxidase from Fetal Bovine Aorta in the presence of protease injibitors -Evidence against polymorphism-

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Abstract

¼Ò (éÚ) ÅÂ¾Æ ´ëµ¿¸ÆÀ¸·ÎºÎÅÍ Urea ÃßÃâ, Sephacryl S200 HR Å©·Î¸¶Åä±×¶óÇÇ, Hydropore
AX À̿±³È¯ Å©·Î¸¶Åä±×¶óÇÇ, Cibacron blue-agarose ģȭ Å©·Î¸¶Åä±×¶óÇÇ, ±×¸®°í
Sephacryl S300 HR Å©·Î¸¶Åä±×¶óÇǸ¦ ÀÌ¿ëÇÏ¿© lysyl oxidase¸¦ ¼ø¼ö ºÐ¸®¸¦ ÇÏ¿´°í ºÐ¸®
±â°£ Áß Ç×»ó ´Ü¹éºÐÇØ ¾ïÁ¦Á¦¸¦ ÷°¡ÇÏ¿´´Ù. ¼ø¼ö ºÐ¸®µÈ È¿¼Ò´Â °¡±³°áÇÕÀÌ ¾ø´Â ±³¿ø´Ü
¹éÁú°ú ¿¤¶ó½ºÆ¾¿¡ È°¼ºÀ» º¸¿´°í, BAPN °°Àº ¾Æ¹Ì³ë³ªÀÌÆ®¸±¿¡ ÀÇÇÏ¿© ¾ïÁ¦µÇ¾ú´Ù.
Sephacryl S300 HR Å©·Î¸¶Åä±×¶óÇÇ·Î ºÐ¸® µÉ °æ¿ì, ÀÌ È¿¼Ò´Â 0.45ÀÇ Kav
(VtÀÇ 65% °ªÀ» º¸¿´°í, À̿±³È¯ °í¼Ó¾×ü Å©·Î¸¶Åä±×¶óÇÇÀÇ °æ¿ì¿¡´Â ÀÌ¿Â
°­µµ°¡ 0.1 - 0.15 »çÀÌ¿¡¼­ ÇϳªÀÇ ÇÇÅ©·Î ¿ë¸®µÇ¾ú´Ù. ¼ø¼ö ºÐ¸®µÈ ÀÌ È¿¼Ò´Â SDS Æú¸®¾Æ
Å©¸±¾Æ¸¶À̵å Àü±â¿µµ¿¿¡¼­´Â ÇϳªÀÇ ¹êµå·Î À̵¿ÇÏ¿´´Âµ¥, ȯ¿øÀÌ µÉ °æ¿ì¿¡´Â ºÐÀÚ·®ÀÌ
33,500, ºñȯ¿øÀÌ µÉ °æ¿ì¿¡´Â ºÐÀÚ·®ÀÌ 24,500ÀÇ À§Ä¡·Î À̵¿ÇÏ¿´´Ù. À̿±³È¯ °í¼Ó¾×ü Å©
·Î¸¶Åä±×¶óÇÇÀÇ °á°ú¸¦ ÂüÁ¶ÇÏ¿©, ´Ù¸¥ º¸°í¼­¿Í´Â ´Þ¸® ¼Ò(éÚ) ÷Ãä® ÓÞÔÑØæ¿¡´Â ¿©·¯Á¾·ù°¡
¾Æ´Ñ ÇÑ Á¾·ùÀÇ lysyl oxidase°¡ Á¸ÀçÇÑ´Ù°í °á·ÐÀ» ³»·È´Ù.
#ÃÊ·Ï#
Lysyl Oxidase from fetal bovine aorta was purified to homogenity using urea
extraction, Sephacryl S200HR chromatography, Hydropore AX ionexchange high
performance liquid column chromatography, Cibacron blue affinity chromatography and
Sephacryl S-300 HR chromatography in the presence of protease inhibitors. The purified
enzyme was active toward latyritic collagen as well as elastin and was sensitive to
aminonitriles such as BAPN. Upon Sephacryl S-300 HR chromatography, the enzyme
was eluted as a peak with a Kav value of 0.45 (65% of Vt)
and it eluted from high performance liquid ion-exchange column (Hydropore AX) at
single position (ionic strength, I = 0.1 - 0.15). Once purified, it showed one band upon
SDS-PAGE. It migrated to a band the mobility of which it migrated to a 24,500 Mr
position under the non-reducing condition. In constrast to other reports, it is concluded
that fetal bovine aorta contains only one type of lysy oxidase.

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