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[Overview] Bacterial Expression System

-

Bacterial expression Overview

Selection guide for bacterial expression system

 

 ÀåÁ¡

¹è¾ç º¼·ý´ç
´Ü¹éÁú ¼öÀ²

 Àû¿ë

Low-temperature expression system

pCold DNA cold shock
expression system

  • ¸ñÀû ´Ü¹éÁúÀÇ ¹ßÇö ¼öÀ² ¹× ¼øµµ¸¦ ³ôÀÌ´Â Àú¿Â ¹ßÇö ½Ã½ºÅÛ
    - Àú¿Â¿¡¼­ ¸ñÀû ´Ü¹éÁúÀÇ ¹ßÇö¸¸ À¯µµÇÏ°í ±× ¿Ü¿¡ E. coli ¼÷ÁÖ ´Ü¹éÁúÀÇ ¹ßÇö ¹× protease È°¼ºÀ» ¾ïÁ¦
  • Chaperone plasmid¸¦ ÇÔ²² »ç¿ëÇÏ¸é ¸ñÀû ´Ü¹éÁúÀÇ °¡¿ë¼ºÀ» ³ô¿©, ȸ¼öÀ²À» °³¼±ÇÒ ¼ö ÀÖÀ½

 10 §·
~ 90 §·/L

  • ºÒ¿ë¼º ´Ü¹éÁúÀÇ ¹ßÇö
  • ´Ù¾çÇÑ Á¾·ùÀÇ His-tagged protein expression vector ¶óÀξ÷

High-yield expression systems

B. subtilis Secretory Protein Expression System

  • ¸ñÀû´Ü¹éÁúÀ» ¼÷ÁÖ ¹Ù±ùÀ¸·Î ºÐºñ ¹ßÇö½ÃÅ°´Â ½Ã½ºÅÛ (Secretion)À¸·Î ´Ü¹éÁú ´ë·® »ý»ê¿¡ ÀûÇÕ
  • 173Á¾·ùÀÇ B. subtilis À¯·¡ secretory signal peptide¸¦ In-Fusion Cloning ½Ã½ºÅÛÀ¸·Î Æí¸® ÇÏ°Ô cloningÇÏ¿© Àû¿ë °¡´É

25 g/L ÀÌ»ó

  • ¸ñÀû ´Ü¹éÁúÀÇ ´ë·® ºÐºñ (secretion) ¹è¾ç
    (Large scale fermentation µî)

Brevibacillus Expression System

  • ºÐºñÇü ¶Ç´Â ¼¼Æ÷³» ´Ü¹éÁúÀ» Active protein ÇüÅ·Π¹ßÇö °¡´É
  • ¼÷ÁÖ ³» Endotoxin°ú protease ¹ßÇö ¼öÁØÀ» ³·Ãç, Ÿ ½Ã½ºÅÛ ´ëºñ ´õ ³ôÀº ¼øµµÀÇ ´Ü¹éÁúÀ» ´ë·®¹ßÇö °¡´É

4 g/L ÀÌ»ó

  • µ¶¼º ´Ü¹éÁú ¶Ç´Â Disulfide bond¸¦ °¡Áö´Â ´Ü¹éÁú µîÀÇ ¹ßÇö¿¡ ÃÖÀû
  • ´Ù¾çÇÑ Á¾·ùÀÇ His-tagged protein expression vector ¶óÀξ÷

High-purity expression system

SPP System (single-protein production system)

  • E. coli ¼÷ÁÖ À¯·¡ÀÇ ´Ü¹éÁú ¹ßÇöÀº ¾ïÁ¦ÇÏ°í ¸ñÀû ´Ü¹éÁú¸¸ È¿À²ÀûÀ¸·Î ¹ßÇö½ÃÅ°´Â mRNA interferase ¸¦ »ç¿ëÇÑ ½Ã½ºÅÛ
  • ¸ñÀû ´Ü¹éÁúÀ» ³ôÀº ¼øµµ·Î ¹ßÇö½Ãų ¼ö ÀÖ°í, ƯÈ÷ È¿À²ÀûÀ¸·Î ¹æ»ç¼º µ¿À§¿ø¼Ò ¶óº§¸µ °¡´É; ÃÖ´ë 90%±îÁö ¶óº§¸µ È®ÀÎ

~ 90 §·/L

  • °í¼øµµÀÇ ´Ü¹éÁú ¹ßÇö
  • ¸ñÀû ´Ü¹éÁúÀÇ ¹æ»ç¼± µ¿À§¿ø¼Ò ¶óº§¸µ¿¡ ÃÖÀû

Standard E. coli expression systems

pET Express & Purify Kits

  • N- / C-¸»´Ü 6x HN tagged protein expression vector (pET ±â¹Ý)
  • Expression system°ú purification kit ¸ðµÎ Æ÷ÇÔ
    - Cloning: ÀüÅëÀûÀÎ Ligase ¹ý
    / ½Å°³³ä In-Fusion cloning
    - TALON °ú His60 Ni ±â¹ÝÀÇ resin ¶Ç´Â resin with buffer Á¦Ç°

1 g/L ÀÌ»ó

  • His-tagged proteinÀÇ ¹ßÇö ¹× Á¤Á¦

HAT Protein Expression
& Purification System

  • ¸ñÀû ´Ü¹éÁúÀÇ °¡¿ë¼º Áõ´ë
  • Á¦Ç° ³» TALON resin, column, buffer°¡ Æ÷ÇÔ
    - Áß¼º pH¿¡¼­ native ¶Ç´Â denature »óÅÂÀÇ ´Ü¹éÁú Á¤Á¦ ¸ðµÎ °¡´É
1 g/L ÀÌ»ó
  • HAT-tagged proteinÀÇ ¹ßÇö ¹× Á¤Á¦