RNA interference (RNAi), a process by which target messenger RNA (mRNA) is cleaved by small interfering complementary RNA (siRNA), is widely used for investigations of regulation of gene expression in various cells. In this study, siRNA complementary to 5' region of exon II of alpha-globin mRNA was examined for its role in erythroid colony forming cells (ECFCs) isolated from normal peripheral b...

General abstract: How can information required for the proper functioning of a cell, an organism, or a species be transmitted in an error-introducing environment? Clearly, similar to engineering communication systems, biological systems must incorporate error control in their information transmission processes. If genetic information in the DNA sequence is encoded in a manner similar to error c...

Functional human globin messenger RNA but failed to stimulate the synthesis of any was isolated from reticulocytes of two paf. -chains, even though nonthalassemic tients with homozygous /3#{176}-thalassemia, human globin mRNA preparations conthree patients with sickle cell fl#{176}-thalassistently stimulated two to four times as semia, and one patient doubly heteromuch fl or globin chain synthe...

Thrombomodulin is an essential cofactor for the activation of the anticoagulant protein C by thrombin. We have identified the expression of thrombomodulin messenger RNA (mRNA) and protein in peripheral blood monocytes. While untreated monocytes expressed thrombomodulin mRNA by Northern blot analysis, lipopolysaccharide-treated cells had decreased mRNA expression. Thrombomodulin antigen was show...

Pre-mRNA 3' end formation is tightly linked to upstream and downstream events of eukaryotic mRNA synthesis. The two-step reaction involves endonucleolytic cleavage of the primary transcript followed by poly(A) addition to the upstream cleavage product. To further characterize the putative 3' end processing endonuclease Ysh1p/Brr5p, we isolated and analyzed a number of new temperature- and cold-...

Two types of short double-stranded RNA molecules, namely microRNAs (miRNAs) and short interfering RNAs (siRNAs), have emerged recently as important regulators of gene expression. Although these molecules show similar sizes and structural features, the mechanisms of action underlying their respective target silencing activities appear to differ: siRNAs act primarily through mRNA degradation, whe...

Introduction : The process of protein synthesis is a vital for all kingdoms life. ribosome ribonucleoprotein complex that reads the genetic code, from messenger RNA (mRNA) to produce proteins and tightly regulate ensure cells growth. fact numerous diseases are caused by defect during biogenesis important understand this pathway. Materials methods We have analyzed literature its links with diffe...

Transcription is an essential process in biology whereby gene-specific transcription factors target sites on DNA to recruit the basal machinery that will produce messenger RNA (mRNA). It a highly regulated multi-step involves many proteins and protein complexes. factors, mark genes for activation, other transcriptional regulators are enriched low-complexity disordered regions, which strongly li...

We have analyzed the sequence complexity, frequency distribution, and template activity of free (F) and membrane-bound (MB) polysomal mRNA populations of MOPC 21 (P3K) mouse myeloma cells. Using the technique of mRNA-cDNA hybridization, we find that F poly(A)+ RNA, which represent 60% of total polysomal mRNA, consists of approximately 8,000 different mRNA sequences distributed in three abundanc...