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Cloned

DNA Polymerase I (E. coli )

-

Á¦Á¶»ç Á¦Ç°ÄÚµå Á¦Ç°¸í ¿ë·® °¡°Ý
(ºÎ°¡¼¼º°µµ)
ºñ°í »ç¿ëÀڸŴº¾ó
Takara
2130A
DNA Polymerase I (E. coli)
°ü·ÃÇмú ±¸¸ÅÇϱâ
500 U
62,400¿ø 
78,000¿ø
°¡°ÝÇÒÀÎ
02.26 ~ 04.19
2130A_DS.v2107Da.pdf
Takara
2130B
DNA Polymerase I (E. coli)
°ü·ÃÇмú ±¸¸ÅÇϱâ
2,500 U (2130A x 5)
355,000¿ø 

Á¦Ç°¼³¸í
º» È¿¼Ò´Â ÁÖÇü ¹× primer (DNA, RNA ¸ðµÎ °¡´É)°¡ Á¸ÀçÇÒ ¶§ dNTP¸¦ ±âÁú·Î ÁÖÇü¿¡ »óº¸ÀûÀÎ DNA¸¦ 5¡¯¡æ3¡¯ ¹æÇâÀ¸·Î ÇÕ¼ºÇÑ´Ù. ¶ÇÇÑ ´ÜÀÏ °¡´Ú¿¡ ƯÀÌÀûÀÎ 3¡¯ ¡æ5¡¯ exonuclease È°¼º(proofreading)°ú ÀÌÁß °¡´Ú¿¡ ƯÀÌÀûÀÎ 5¡¯¡æ3¡¯ exonuclease È°¼ºÀ» °¡Áö°í ÀÖ´Ù. ÀÌÁß 5¡¯¡æ3¡¯ exonuclease È°¼ºÀ» »ç¿ëÇØ nick translationÀ» ÅëÇØ DNA¿¡ labellingÀ» ½Ãų ¼ö ÀÖ´Ù.
º¸Á¸
-20¡É
³óµµ
5 U/§¡
Çü»ó
50 mM
Potassium phosphate (pH6.5)
1 mM
DTT
50%
Glycerol
÷ºÎ buffer ±¸¼º (10x)
500 mM
Tris-HCl (pH7.8)
100 mM
MgCl2
1 mM
DTT
È°¼ºÀÇ Á¤ÀÇ
37¡É, pH7.4¿¡¼­ Poly d(A or T)¸¦ ÁÖÇü ¹× primer·Î »ç¿ëÇÒ ¶§ 30ºÐ°£ ¸ðµç 10nmolÀÇ nucleotide¸¦ »ê¼ºÀÇ Ä§Àü¹°·Î(acid-insoluble products) ¹Ù²Ù´Â È¿¼Ò È°¼ºÀ» 1 UÀ¸·Î ÇÑ´Ù.
È°¼º ÃøÁ¤¿ë ¹ÝÀÀ¾× Á¶¼º
67 mM
Potassium phosphate (pH7.4)
6.7 mM
MgCl2
0.1 mM
DTT
20 ¥ìM
Poly d(A-T)
33 ¥ìM
dATP
33 ¥ìM
[3H]dTTP
»ç¿ë»óÀÇ ÁÖÀÇ
- º» È¿¼Ò´Â Èñ¼®¿¡ ÀÇÇÑ È°¼º ÀúÇÏ°¡ ÀϾÁö´Â ¾ÊÀ¸³ª, ½ÉÇÏ°Ô ±³¹ÝÇÏ¸é ½ÇÈ°ÇÒ ¼ö ÀÖ´Ù.
- Endonuclease¸¦ Æ÷ÇÔÇÏ°í ÀÖÁö ¾ÊÀ¸¹Ç·Î ´Üµ¶À¸·Î´Â nick translation È°¼ºÀ» °ÅÀÇ º¸ÀÌÁö ¾Ê´Â´Ù.
- DNA¿Í ģȭ¼ºÀÌ °­Çϱ⠶§¹®¿¡ °ú·®À» »ç¿ëÇϸé aggregationÀÌ ÀϾ ¹ÝÀÀÀÌ ÃæºÐÈ÷ ÁøÇàµÇÁö ¾ÊÀ» ¼ö ÀÖ´Ù.
¿ëµµ
- DNase I (Code 2270)°úÀÇ º´¿ë¿¡ ÀÇÇÑ nick translation
- Okayama-Berg¹ýÀ» »ç¿ëÇÑ ÀÌÁß °¡´Ú DNAÀÇ ÇÕ¼º ¹ÝÀÀ (DNA Polymerase I 0.3 §¶Àº ¾à 2.5 U¿¡ ÇØ´ç)
±â¿ø
Escherichia coli carrying the plasmid which encodes the gene of Pol I
Ã˸ÅÇÏ´Â ¹ÝÀÀ
(1) 5'¡æ 3' DNA polymeraseÈ°¼º
ÁÖÇü ¹× primer (DNA, RNA ¸ðµÎ °¡´É)°¡ Á¸ÀçÇÒ ¶§ dNTP¸¦ ±âÁú·Î, ÁÖÇü¿¡ »óº¸ÀûÀÎ DNA¸¦ 5'¡æ3' ¹æÇâÀ¸·Î ÇÕ¼ºÇÑ´Ù.

Polymerase È°¼º¿¡ ÀÇÇÑ ¹ÝÀÀÀº ¾Æ·¡ÀÇ 3Á¾·ù°¡ ÀÖ´Ù
- Gap filling: ÀÌÁß °¡´Ú DNA gapÀÇ 3'-OH ¸»´Ü¿¡ nucleotide¸¦ ºÎ°¡ÇÏ°í ³²Àº ¿Ü°¡´Ú ºÎºÐÀ» ä¿î´Ù.
- Nick translation: ÀÌÁß °¡´Ú DNA nick ºÎºÐÀÇ 3'-OH ¸»´Ü¿¡ nucleotide¸¦ ºÎ°¡Çϸ鼭 µ¿½Ã¿¡ 5'-¸»´ÜÀÇ nucleotide¸¦ exonucleolytic ¹ÝÀÀÀ¸·Î Á¦°ÅÇÑ´Ù.
- Strand displacement: nick ºÎºÐÀÇ 3'-OH ¸»´Ü¿¡ nucleotide¸¦ ºÎ°¡ÇÔÀ¸·Î½á 5'¸»´ÜÀÇ »ç½½À» ġȯÇÑ´Ù.

(2) ÀÌÁß °¡´Ú ƯÀÌÀû 5'¡æ 3'exonuclease È°¼º

¼Õ»óµÈ nucleotide¸¦ Á¦°ÅÇϰųª DNA/RNA hybridÀÇ RNA¸¦ ºÐÇØÇÑ´Ù.

(3) ´ÜÀÏ °¡´Ú ƯÀÌÀû 3'¡æ 5'exonuclease È°¼º

PCR¿¡¼­ÀÇ fidelity¿¡ °ü¿©ÇÏ´Â È°¼º, (2) ¿Í´Â ´Ù¸¥ µµ¸ÞÀο¡ Á¸ÀçÇÑ´Ù.
ÀϹÝÀû ¼ºÁú
- ºÐÀÚ·®: ¾à 109,000
- Subunit
   1ºÐÀÚ´ç 1°³ÀÇ Zn2+À» °¡Áø single polypeptide chain
- ÃÖÀû pH: pH 7.4
- º¸Á¶ÀÎÀÚ: Mg2+
- ¾ÈÁ¤¼º: °Ý·ÄÇÑ ±³¹Ý °úÁ¤¿¡¼­ ºÒÈ°¼ºÈ­µÈ´Ù.
- ÃÖÀûÀÇ ¿° ³óµµ: 100 mM KCl
È°¼ºÀÇ Á¤ÀÇ
Poly d(A-T)¸¦ ÁÖÇü ¹× primer·Î »ç¿ëÇÏ¿© 37¡É, pH7.4¿¡¼­ 30ºÐ°£ ¸ðµç 10 nmolÀÇ nucleotide¸¦ »êºÒ¿ë¼º ħÀü¹°·Î ¹Ù²Ù´Â È¿¼Ò È°¼ºÀ» 1UÀ¸·Î ÇÑ´Ù.

Keyword :

¼ö½ÄÈ¿¼Ò£¯DNA Polymerase¡¢RNA Polymerase
>
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DNA, RNA ÇÕ¼º ¹ÝÀÀÀ» ÃËÁø
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