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Spermatogenesis involves a series of process including exiting from the mitotic cell cycle, entry into meiosis, completion of complex differentiation programs, and producing spermatozoa. Expression of various genes in an ordered manner, and interactions between various genes and their protein products, primarily controlled at the post-transcriptional level with DEAD-box RNA helicases playing a crucial...
Serpins are a family of serine protease inhibitors that regulate physiological functions and are found widely in animals, plants and microorganisms. However, there are few reports on the role of serpins in the Chinese mitten crab, Eriocheir sinensis. We cloned two serpin genes from E. sinensis, named Esserpin-2 and Esserpin-3. Quantitative and semi-quantitative real-time PCR results showed that Esserpin-3...
P38 mitogen-activated protein kinases (MAPKs) comprise a family of serine/threonine protein kinases that play important roles in cellular responses to inflammatory cytokines and environmental stresses. These kinases are involved in controlling cell division, differentiation and death in mammalian testes and therefore are critical to spermatogenesis. To explore their functions in male reproduction...
As a key component of the Toll signaling pathway, Tube plays central roles in many biological activities, such as survival, development and innate immunity. Tube has been found in shrimps, but has not yet been reported in the crustacean, Eriocheir sinensis. In this study, we cloned the full-length cDNA of the adaptor Tube for the first time from E. sinensis and designated the gene as EsTube. The full-length...
The Cullin-RING finger ligases (CRLs) are involved in the ubiquitin-mediated degradation of cell cycle regulators and play an important role in gametogenesis. Cullin 4 (CUL4) is a conserved core component of a new class of ubiquitin E3 ligase, and participates in the proteolysis of several regulatory proteins through the ubiquitin–proteasome pathway. The mammals encode two paralogs of CUL4, CUL4A...
The small ubiquitin-like modifier (SUMO) pathway in eukaryotes is an essential post-translational modification required for a variety of cellular processes, development and organelle biogenesis. SUMO-conjugating enzyme (Ubc9) is an important conjunction enzyme in the SUMO pathway. SUMO-1 and Ubc9 have been found in vertebrates; however, their expression in crustaceans was poorly characterized. In...
Alagille syndrome (AGS) is an autosomal dominant disorder characterized by bile duct paucity. It can be caused by variations in the JAG1 gene encoding a protein of Notch ligand and by variations in the NOTCH2 gene encoding a Notch receptor. In this study we identified 15 different JAG1 gene variations in 17 Chinese patients, nine of which were novel alterations including c.766G > T, c.819delC,...
Heat shock protein 70 (HSP70) is a member of molecular chaperones and is important for reproductive biological processes in eukaryotes. In this regard, a full length HSP70 comprised of 2366 nucleotides from the red claw crayfish Cherax quadricarinatus (CqHSP70) was characterized, which with an open-reading frame of 1959bp encoded 652 amino acid residues. Its mRNA transcript expression in the testes...
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