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"Sebagian besar bakteri asam laktat (BAL) menghasilkan eksopolisakarida (biopolimer fruktan) yang mempunyai banyak manfaat dalam industri makanan, kosmetik, kesehatan dan farmasi. Sintesis biopolimer ini melibatkan peran enzim fruktansukrase atau fruktosiltransferase (ftf). Rekayasa genetika dapat dilakukan untuk mendapatkan biopolimer yang berkriteria unggul, yaitu biopolimer inulin yang mempunyai derajat polimerisasi tinggi. Weissella confusa galur MBFCNC-2(1) telah menjadi sumber gen fruktansukrase yang dikloning lengkap di inang E. coli BL21 StarTM.Tujuan penelitian ini adalah untuk mendapatkan klon versi terpenggal dari gen fruktansukrase karena klon gen lengkap dilaporkan mempunyai masalah dalam ekspresinya. Sebagai template untuk kloning digunakan plasmid dari E. coli BL21 StarTM rekombinan, plasmid rekombinan pO_ftfNS pembawa gen lengkap, dan DNA genomik. PCR dilakukan menggunakan primer FTFdel_Fw dan FTFdel_Rv. Hasil PCR disekuensing dan dianalisis menggunakan BLAST. Sebagai hasil, gen fruktansukrase versi terpenggal didapatkan dari plasmid rekombinan pO_ftfNS pembawa gen ftf lengkap.

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Most of Lactic Acid Bacteria (LAB) produce exopolysaccharide (fructan biopolymer) that has many advantages in food, cosmetic, health, and pharmacy industries. Synthesis of this biopolymer involves the role of fructansucrase enzyme of fructosyltransferase (ftf). Genetic engineering could be done to obtain biopolymer with excellence characteristcs, that is inulin with high degree of polymerization. Weisella confusa strain MBFCNC-2(1) has been used as a source of fructansucrase gene which is full-length clonned at E. coli BL21 StarTM.The aim of this study was to obtain truncated gene of fructansucrase because fulllength clone has problem on its expression. The PCR template used in this study were plasmid of Recombinant E coli BL21 StarTM, recombinant plasmid pO_ftfNS carrying full-length gene, and genomic DNA. PCR was carried out by FTFdel_Fw and FTFdel_Rv primer. The PCR product was sequenced and analyzed by using BLAST. Result revealed that truncated fructansucrase gene was obtained from plasmid recombinant pO_ftfNS carrying full-length gene."

"ABSTRACTActin is a major component of the plant cytoskeleton, so all cells contain this protein. Actin is expressed constitutively and is involved in basic housekeeping functions required for cell maintenance. Because of this, it has been frequently used as an internal control to normalize changes in gene expressions analysis. Actually, the information of nucleotidesequence of actin gene of Jatropha curcas L. population IP-2P from Indonesia is not available yet. The objective of this research was to isolate, clone and characterize cDNA of actin genes of J. curcas IP-2P. Three partial actin gene sequences had been successfully isolated by PCR using total cDNA as template, and actin primer designed from conserved region ofArabidopsis thaliana. Nucleotide sequence analysis showed that the length of JcACT fragment is 610, 534, and 701 bp encoding 203, 177, and 234 amino acids respectively. Local alignment analysis based on mRNA sequences shows that JcACT fragment shares 98% similarity with actin mRNA of Hevea brasiliensis and 99% with actin mRNA of Ricinus communis. Based on deduced amino acid sequence, JcACT is 100% identical to acting from Prunus salicina, Gossypium hirsutum, and Betula luminifera. Even though these clones of cDNA are not completed yet, they can be used as reference in J. curcas L. gene expression analysis."

"Experimental studies have shown that dental pulp tissue has potential to regenerate dentine in response to adversestimuli, such as caries and associated operative procedures. However, the potential of dental pulp regeneration seems tobe limited by regenerative capacity of the cell involved. In this study, we report the effect of transfection of arecombinant plasmid containing human BMP-2 gene in proliferation and differentiation of dental pulp tissue in vitro.The regenerative capacity was analyzed by ALP production and calcium content. Results showed that the transfecteddental pulp cell was able to differentiate into the odontoblast phenotype, indicating the presence of odontoblastprogentitor cells in dental pulp tissue."

"Gen DefH9-iaaM merupakan gen pengkode senyawa prekursorpembentukan auksin. Kandungan auksin yang tinggi menginduksipembentukan buah partenokarpi, tanpa melalui polinasi dan fertilisasi. Tigagalur tanaman tomat transgenik yang membawa insersi danmengekspresikan gen DefH9-iaaM, yaitu OvR1#14-4, OvM2#10-1, danOvM2#6-2, telah dihasilkan melalui transformasi genetik denganAgrobacterium oleh kelompok peneliti di BB-BIOGEN. Penelitian bertujuanmenguji stabilitas insersi dan mengetahui ekspresi gen DefH9-iaaM padatanaman T3 dari ketiga galur tersebut. Uji stabilitas gen dilakukan denganmetode PCR menggunakan primer spesifik IAAM 5 dan IAAM 3. Keduaprimer tersebut menghasilkan fragmen gen iaaM sebesar ± 148 pb. FragmenDNA produk PCR divisualisasikan menggunakan gel elektroforesis. Hasil ujimolekuler dianalisis menggunakan uji chi-square dengan level of significant0,05. Galur OvR1#14-4 memiliki insersi gen yang telah stabil denganperbandingan filial transgenik dan non transgenik yang memenuhiperbandingan penyilangan monohibrid Mendel yaitu 3:1. Tanaman denganhasil uji molekuler positif kemudian ditanam di lapang untuk uji ekspresifenotipik dan evaluasi daya hasil. Hasil uji fenotipik dianalisis dengan ujiANOVA level of significant 0,05. Ekspresi gen partenokarpi DefH9-iaaM padatanaman tomat transgenik meningkatkan jumlah tandan sebesar 191--227%,jumlah bunga sebesar 191--310%, dan jumlah buah sebesar 331--426% dibandingkan dengan kontrol Opal, serta menyebabkan terbentuknya buah tomat berbiji sedikit dan tanpa biji. Galur OvR1#14-4 menghasilkan jumlah tandan, jumlah bunga, dan jumlah buah paling tinggi dibandingkan dua galur lain."

"A unique, adaptable textbook for upper-level undergraduate and graduate courses emphasizing particular aspects of modern biotechnology.Features straightforward, jargon-free writing and extensive figures to help students make sense of complex biological systems and processes.Includes expanded coverage of the latest innovations in DNA sequencing techniques, therapeutics, vaccines, transgenic plants, and transgenic animals.Allows instructors to easily tailor the content to courses focusing on the fundamentals of biotechnology as well as courses dedicated to medical, agricultural, environmental, or industrial applications."