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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.28, no.2, 2010³â, pp.95-100
PBSA ºÐÇØÈ¿¼Ò À¯ÀüÀÚÀÇ ºÐ¼®
( Analysis of Gene Encoding the PBSA Degradation Enzyme )
ÁÖÇöÁø;±è¸»³²; »ó¸í´ëÇб³ »ý¹°Çаú;»ó¸í´ëÇб³ »ý¹°Çаú;
 
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¿ì¸®³ª¶ó Åä¾çÀ¸·ÎºÎÅÍ ºÐ¸®µÈ (ÁÖ¿Í ±è 2009) poly (butylene succinate-co-butylene adipate; PBSA) ºÐÇØ±Õ Burkholderia cepacia PBSA-7, Bacillus licheniformis PBSA-8 ¹× Burkholderia sp. PBSA-9¿¡¼­ PBSA ºÐÇØÈ¿¼Ò¸¦ ¾ÏȣȭÇÏ´Â À¯ÀüÀÚ¸¦ ºÐ¼®ÇÏ¿´´Ù. PCRÀ» ¼öÇàÇÏ¿© B.cepacia PBSA-7°ú Burkholderia sp. PBSA-9´Â ¾à 1.5 Kb, B. licheniformis PBSA-8Àº ¾à 600 bpÀÇ lipase À¯ÀüÀÚ(lip A) ÀýÆíÀ» °¡Áö´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù. ¼¼ ±ÕÁÖ ¸ðµÎ¿¡¼­ À¯ÀüÀÚÀÇ ¿°±â¼­¿­ ³» lipase boxÀÎ Gly-X1-Ser-X2-Gly¿Í Ala-X1-Ser-X2-Gly°¡ Á¸ÀçÇÏ¿´´Ù. B. cepacia PBSA-7ÀÇ PBSA ºÐÇØÈ¿¼Ò À¯ÀüÀÚ´Â family I-1 lipases¿Í 36~40%, family I-2 lipases¿Í´Â 82~92%ÀÇ ³ôÀº À¯ÀüÀû »óµ¿¼ºÀ» º¸¿´´Ù. ¶ÇÇÑ B. licheniformis PBSA-8ÀÇ PBSA ºÐÇØÈ¿¼Ò À¯ÀüÀÚ´Â subfamily 1-4 lipases¿Í 64~65%ÀÇ À¯ÀüÀû »óµ¿¼ºÀ» ³ªÅ¸³»¾úÀ¸³ª, subfamily 1-5¿¡ ¼ÓÇÏ´Â lipaseµé°ú´Â °ÅÀÇ À¯ÀüÀû »óµ¿¼ºÀÌ ¾ø´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Burkholderia sp. PBSA-9ÀÇ PBSA ºÐÇØÈ¿¼Ò À¯ÀüÀÚµµ family I-1 lipases¿Í 35~37%, family I-2 lipases¿Í´Â 83~94%·Î ³ôÀº À¯ÀüÀû »óµ¿¼ºÀ» º¸¿© B. cepacia PBSA-7ÀÇ PBSA ºÐÇØÈ¿¼Ò À¯ÀüÀÚ¿Í À¯»çÇÑ °á°ú¸¦ º¸¿´´Ù.
Burkholderia cepacia PBSA-7, Bacillus licheniformis PBSA-8 and Burkholderia sp. PBSA-9 previously collected from Korea soil (Joo and Kim, 2009) were analyzed for the presence of genes encoding proteins operative in the degradation of poly(butylene succinate-co-butylene adipate; PBSA). Polymerase chain reaction analyses revealed a 1.5 kb fragment of the lipase gene (lip A) in B. cepacia PBSA-7 and Burkholderia sp. PBSA-9, while B. licheniformis PBSA-8 harbored the same gene fragment at 600 bp. The three strains possessed "Gly-X1-Ser-X2-Gly" and "Ala-X1-Ser-X2-Gly" lipase sequence regions. Burkholderia sp. PBSA-7 lip A displayed 36~40% homology with the family 1-1 lipases and 82~92% homology with the family 1-5. Burkholderia sp. PBSA-8 lip A was 64~65% homologous with the subfamily 1-4 lipases, but displayed no homology with the subfamily 1-5 lipases. Burkholderia sp. PBSA-9 lip A displayed 35~37% homology with the family I1 lipases and 83~94% homology with the family I2 lipases, similar to Burkholderia sp. PBSA-7.
 
Ű¿öµå
PBSA;degradation enzyme;Burkholderia cepacia;Bacillus licheniformis;Burkholderia sp.;Lipase;lip A;genetic homology;
 
ȯ°æ»ý¹° / v.28, no.2, 2010³â, pp.95-100
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201015441599755)
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