Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn
Kajian ini bertujuan untuk memencilkan dan mencirikan aminoasilase termostabildaripada bakterium termofilik. Dalam pemencilan bakterium, sampel air dan sedimen telahdiperolehi dari Air Panas Ulu Slim, Perak. Aminoasilase SZN termostabil diekstraksecara intrasellular dan ditulenkan sehingga homogen d...
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QR Microbiology Suzana Adenan Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn |
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Kajian ini bertujuan untuk memencilkan dan mencirikan aminoasilase termostabildaripada bakterium termofilik. Dalam pemencilan bakterium, sampel air dan sedimen telahdiperolehi dari Air Panas Ulu Slim, Perak. Aminoasilase SZN termostabil diekstraksecara intrasellular dan ditulenkan sehingga homogen dengan menggunakan kromatografi pertukaran ion dan pengasingan saiz dalam eksperimen seterusnya. Aminoasilase SZN yang tulen telahdicirikan pada pelbagai suhu, pH, ion logam dan perencat. Kajian struktur lebih lanjutmenggunakan spektrokopi sirkular dikroisma dilakukan bagi menentukan kestabilan a-heliks danlembaran dalam pelbagai suhu. Penghasil aminoasilase termofilik yang dipencilkan itu dikenalpasti sebagai Geobacillus sp. strain SZN. Aminoasilase SZN dicirikansebagai enzim termostabil dengan aktiviti optimum pada 60C, pH 7.5, tempoh separuhhayat 16 jam dengan peningkatan aktiviti dan kestabilan dalam beberapa ion logam danperencat yang diuji. Keputusan daripada penentuan struktur menunjukkan pengurangan a-heliks secara beransur-ansur daripada 36 hingga 27.6%, diikuti dengan disorientasi mendadak struktur tersebut pada peralihan suhu daripada 60 hingga 70C(27.6 hingga 19.5%). Sebaliknya, peratusan lembaran , telah meningkat secara stabil pada suhuyang diuji. Struktur a-heliks yang juga merupakan lokasi residu-residu pengikat logam danpemangkin yang penting, lemah sepenuhnya pada suhu melebihi 70C lalu mengakibatkan kehilanganaktiviti. Kesimpulannya, aminoasilase SZN telah dicirikan sebagai enzim termostabil berdasarkan kepada integriti struktur a-heliks dan kestabilan fungsinya pada suhutinggi. Implikasi kajian ini menunjukkan bahawa aminoasilase SZN mampu menjadi enzimaltematif kepada bioindustri berdasarkan kepada peningkatan aktiviti enzim dalam suhutinggi dan kestabilan dalam pelbagaiperencat yang diuji. |
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Suzana Adenan |
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Suzana Adenan |
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Suzana Adenan |
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Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn |
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Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn |
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Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn |
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Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn |
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Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn |
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isolation and characterization of new thermophilic aminoacylase from geobacillus sp. strain szn |
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Universiti Pendidikan Sultan Idris |
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Fakulti Sains dan Matematik |
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2018 |
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oai:ir.upsi.edu.my:62032021-09-01 Isolation and characterization of new thermophilic aminoacylase from Geobacillus sp. Strain Szn 2018 Suzana Adenan QR Microbiology Kajian ini bertujuan untuk memencilkan dan mencirikan aminoasilase termostabildaripada bakterium termofilik. Dalam pemencilan bakterium, sampel air dan sedimen telahdiperolehi dari Air Panas Ulu Slim, Perak. Aminoasilase SZN termostabil diekstraksecara intrasellular dan ditulenkan sehingga homogen dengan menggunakan kromatografi pertukaran ion dan pengasingan saiz dalam eksperimen seterusnya. Aminoasilase SZN yang tulen telahdicirikan pada pelbagai suhu, pH, ion logam dan perencat. Kajian struktur lebih lanjutmenggunakan spektrokopi sirkular dikroisma dilakukan bagi menentukan kestabilan a-heliks danlembaran dalam pelbagai suhu. Penghasil aminoasilase termofilik yang dipencilkan itu dikenalpasti sebagai Geobacillus sp. strain SZN. Aminoasilase SZN dicirikansebagai enzim termostabil dengan aktiviti optimum pada 60C, pH 7.5, tempoh separuhhayat 16 jam dengan peningkatan aktiviti dan kestabilan dalam beberapa ion logam danperencat yang diuji. Keputusan daripada penentuan struktur menunjukkan pengurangan a-heliks secara beransur-ansur daripada 36 hingga 27.6%, diikuti dengan disorientasi mendadak struktur tersebut pada peralihan suhu daripada 60 hingga 70C(27.6 hingga 19.5%). Sebaliknya, peratusan lembaran , telah meningkat secara stabil pada suhuyang diuji. Struktur a-heliks yang juga merupakan lokasi residu-residu pengikat logam danpemangkin yang penting, lemah sepenuhnya pada suhu melebihi 70C lalu mengakibatkan kehilanganaktiviti. Kesimpulannya, aminoasilase SZN telah dicirikan sebagai enzim termostabil berdasarkan kepada integriti struktur a-heliks dan kestabilan fungsinya pada suhutinggi. Implikasi kajian ini menunjukkan bahawa aminoasilase SZN mampu menjadi enzimaltematif kepada bioindustri berdasarkan kepada peningkatan aktiviti enzim dalam suhutinggi dan kestabilan dalam pelbagaiperencat yang diuji. 2018 thesis https://ir.upsi.edu.my/detailsg.php?det=6203 https://ir.upsi.edu.my/detailsg.php?det=6203 text eng closedAccess Masters Universiti Pendidikan Sultan Idris Fakulti Sains dan Matematik Altschul, S. F., Madden, T. L., Schaffer, A. A., Zhang, J., Zhang, Z., Miller, W., &Lipman, D. J. (1997). Gapped BLAST and PSI-BLAST: a new generationof protein database search programs. Nucleic Acids Research, 25, 3389-3402.Amend, J.P., Rogers, K.L., Shock, E.L., Gurrieri, S., & Inguaggiato, S. (2003)Energetics of chemolithoautotrophy in the hydrothermal system of VulcanoIsland, southern Italy. Geobiology, 1,37-58.Ash, C., Farrow, J.A.E., Wallbanks, S., & Collins, M.D. (1991). 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