The several types of small RNA, have been proposed repressor of gene expression great potential for use in gene therapy. The (III of Pol) RNA polymerase III, little is located in the intracellular compartment of different intracellular small RNA expression products such as usual, RNA that is highly structured is ideal for some. We designed a cassette with the Pol III promoter of human cells for quality, high-level expression of the RNA of small nucleolus and nucleoplasm. Nuclear RNA small U6 (a snRNA), 5S ribosomal RNA (the rRNA), and destination intracellular and transcription levels were compared to express the transcription into components 7SL RNA of a signal recognition particle. RNA is a specific inhibitor, in this way, allowing these tapes can not necessarily predict the same input RNA in place in the cell some place the most effective. Small interfering RNA several insert (of siRNA) will be tested for efficacy. One of the inputs of the siRNA that reduces the expression of lamin when it is transcribed from the promoter of the U6 snRNA in the core when it is found in the nucleolus and cytoplasm and transfer of ink 5S rRNA’s and 7SL RNA-based It does not affect the expression of the laminate. In order to investigate the general nature of the driving U6 siRNA inhibition with siRNA targeting of HIV was further tested by co-transfection with provirus in cell culture. The degree of inhibition of HIV-1 varies between the insert, but the results, cassette U6 has been shown to allow expression of the siRNA-like inhibitors of HIV gene expression.

To the genomic DNA, and a gene of an organism, including leading to the production of specific proteins serve multiple functions specific to nucleic acid coding for protein synthesis. Transcription and translation: the fusion protein, two steps are included. Transcription creating extra copies of DNA sequences and RNA, translation is the subsequent processing used for the synthesis of RNA from the amino acids of the protein it really is. Production of proteins, inhibition of the transfer process, resulting in a blocking its function in the end. In order to understand the role better protein plays in a particular disease state, these compounds make a useful research tool, Sigma-Aldrich, offers a number of small molecules that inhibit protein translation.

RNA interference called (PTGS) post-transcriptional gene silencing (RNAi), typically by causing the destruction of mRNA specific molecules, RNA molecules are biological processes that inhibit gene expression. Historically, transcriptional gene silencing it is (PTGS) after co-suppression, it is known, such as suppression, the name of the other. Only after a thorough understanding of the process of apparently unrelated these, that they explained the phenomenon of RNAi all became clear it. 2006, Craig C. Mello and Andrew Fire, the publication is elegance in 1998 they shared the Nobel Prize in Physiology or Medicine for their work in RNA interference of nematode worm C,.

It is the center that the interfering RNA – two types of small ribonucleic acid (RNA) molecule – RNA and micro (the miRNA) small interfering RNA (the siRNA). The RNA, is a direct product of the gene, by preventing the mRNA from the protein production RNA and other specific, the (mRNA), for example, RNA small these, the molecules that increase or decrease its activity It can be coupled. Transposon and virus – not only plays an important role in protecting cells against parasitic nucleotide sequence, RNA interference, gene expression in general and to direct development.

The RNAi, located in eukaryotic organisms including many animals, the method, long double-stranded RNA enzyme dicer cutting (dsRNA) molecules into short fragments of 20 nucleotides difficult-dual, which is called siRNA of, It is initiated by the. In other words, each siRNA, has developed a direction and passenger strand of single-stranded 2 (SS) ssRNAs, you want to use. Passenger strand is reduced, the management direction contained RNA-induced silencing complex (RISC). Research results are post-transcriptional gene silencing that occurs when using a nucleotide sequence complementary to couple messenger RNA molecule chains and induce cleavage by catalytic component Argonaut, the RISC complex most. The restricted the molar concentration of siRNA Initially, in a particular organism, this process can spread throughout the body are known.

In cell culture, it is possible to induce suppression of specific genes of interest strongly selectively introducing synthetic dsRNA into cells, RNAi has become a valuable research tool for both in vivo. RNAi can be used for large screen to be canceled each gene to cells can be systematically and serve to identify the necessary components for event and cell specific processes, such as cell division. The road, it is used as a practical tool of medicine and biotechnology.

Proceed transcription in stage 5 or 6 to move like a wave along the DNA. Sigma factor of one or more starts to allow the binding of RNA polymerase promoter DNA, transcription of a gene. To transcription bubble movement of the RNA polymerase, such as zipper slider to split the double-stranded DNA molecule to double-stranded unpaired nucleotide DNA by breaking the hydrogen bonds of complementary nucleotides during DNA. RNA polymerase adds a matching RNA nucleotide is coupled to the DNA nucleotides complementary to one strand of the DNA. Phosphate backbone is formed – RNA, the sugar and the support by RNA polymerase to form RNA.

Hydrogen bonds RNA helix DNA segments twist release the RNA strand newly synthesized. If you have a nucleus of RNA, cells, and outputs it to the cytoplasm through the nuclear pore complex and (additional cap 5’UTR and 3’UTR poly A tail) for further processing. Transcription is the first step leading to gene expression. Is called a transfer unit, a stretch of DNA transfer has genes encoding the at least one RNA molecule. Thereafter, the process of translation, the result of the transfer messenger RNA is used to produce this protein (mRNA), transcribed genes, when encoding the protein. Alternatively, (for example, micro-RNA, etc. lincRNA) ribosomal RNA and or (rRNA gene) transfer RNA (the tRNA), transcribed genes encodes a ribozyme or non-protein components, the assembly process non-coding RNA genes get.

The transfer unit of DNA encoding the protein, and a sequence not only can not only convert the protein (coding sequence), controls the regulatory sequences direct Finally, to adjust the synthesis of this protein . Coding sequence is called (ie, upstream) 5 president untranslated region of before (5’UTR), and coding sequence, a series of the following (downstream) 3 prime untranslated region regulatory sequences, (3 ‘UTR it is called). Transfer some correction mechanism, is because it is less effective than the control in the copy of DNA transcription, the accuracy of the copy DNA replication is low they.

As the replication of DNA, DNA is read from the 3’UTR → 5’UTR during transfer. On the other hand, RNA complementary is created by 5’UTR → direction 3’UTR. That is, the 5 ‘end was first created in base pairs. And is formed by anti-parallel strands of two DNA double helix, but is used to transfer only one of the two strands of DNA called the template strand. In comparison with only double-stranded DNA RNA, it is because it is single-stranded. Since sequences are the same (except substitution of uracil for thymine) RNA transcript fresh, DNA encoding the other chain is a (gap) direction. You can use the 3’UTR → 5’UTR circuit only need to Okazaki fragments seen in DNA replication is eliminated. End pre-start, start, promoter clearance, and elongation: transcription is divided into five stages.