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The association between mutations in the USP26 gene and male infertility has been studied intensively. However, the biological function of the mutant proteins remains to be elucidated. To confirm the effects of the reported mutations, we analyse the enzyme activity of USP26 between the wild-type and the variants from a molecular perspective.Using pGEX-USP26 as a template, site-directed mutagenesis...
Real-time reverse transcription quantitative polymerase chain reaction (RT-qPCR) has become the most common technique to investigate mRNA expression levels of target genes. In order to obtain accurate results, stable reference genes need to be selected for normalization in an experimental study. Human retinal endothelial cells (HREC) cultured in a hypoxic and hyperglycemic environment is a potential...
Cadmium (Cd) is known as a widespread pollutant in aquatic environment. The accumulation of reactive oxygen species (ROS) is attributed to Cd exposure, which may affect the growth, development and physiological metabolism of aquatic organisms. In response to these unfavorable damages, antioxidant systems have been developed to protect against oxidative stress. In this study, we investigated the expression...
Ubiquitin-specific protease 12 (USP12) plays a significant role in tumor cell apoptosis and cell cycle progression. However, the regulatory mechanism of USP12 in human cervical carcinoma HeLa cell growth is unknown. In this study, we showed that knockdown of USP12 effectively induced cell cycle arrest in HeLa cells and decreased BMI-1, c-Myc and cyclin D2 transcription levels. By contrast, unlike...
Heat shock protein 70 (HSP70) is molecular chaperone that is important for reproductive biological processes. In this study, a full length HSP70 from the mudskipper (Boleophthalmus pectinirostris) was characterized. It was found to contain: a 108bp 5′-untranslated region, a 208bp 3′-untranslated region, and a 1953bp open reading frame, which encodes a protein of 650 amino acids with a theoretical...
Ubiquitin-specific protease 22 (USP22) can regulate the cell cycle and apoptosis in many cancer cell types, while it is still unclear whether the deubiquitinating enzyme activity of USP22 is necessary for these processes. As little is known about the impact of USP22 on the growth of HeLa cell, we observed whether USP22 can effectively regulate HeLa cell growth as well as the necessity of deubiquitinating...
•The primary structure of COMT had not changed in giant panda and red panda. •The 12 nucleotides missing of the COMT in giant panda are artificial. •The primary structure of COMT isn't an answer for the diet shift of giant or red panda.
To fully explore the trends of atomic composition during the macroevolution from prokaryote to eukaryote, five atoms (oxygen, sulfur, nitrogen, carbon, hydrogen) and related functional groups in prokaryotic and eukaryotic proteins were surveyed and compared. Genome-wide analysis showed that eukaryotic proteins have more oxygen, sulfur and nitrogen atoms than prokaryotes do. Clusters of Orthologous...
We have demonstrated that the calcium-sensing receptor (CaSR) is involved in lipid metabolism; however, whether CaSR polymorphisms affect lipid metabolism in obesity is still unclear. The present study aimed to determine the effects of CaSR polymorphisms on HTG risk in obese Chinese.A total of 972 subjects with HTG and 1197 with normal triglyceride (NTG) were stratified by body mass index (BMI) into...
Dendrobium officinale Kimura et Migo (Orchidaceae) is a traditional Chinese medicinal plant. The stem contains an alkaloid that is the primary bioactive component. However, the details of alkaloid biosynthesis have not been effectively explored because of the limited number of expressed sequence tags (ESTs) available in GenBank. In this study, we analyzed RNA isolated from the stem of D. officinale...
Mutations of CYP17A1 gene could cause complete or partial, combined or isolated 17α-hydroxylase/17,20-lyase enzyme deficiencies (17OHD). We intended to investigate the CYP17A1 mutation in five unrelated patients and analyze its possible influence on phenotype of an atypical 17OHD patient presented with micropenis, hypertension and intermittent hypokalemia. Steroid hormones were assayed in these patients...
Trypsin-like serine protease (TLS) plays an important role in many physiological processes including wound healing, phlogosis reaction, blood clotting, regeneration etc. In this paper, a 1216bp full-length cDNA sequence of TLS including 39bp 5′ UTR and 355bp 3′UTR coding for a theoretical 273 amino acids protein was cloned from Apostichopus japonicus by means of the RACE technique for the first time...
The Paraoxonase 1 (PON1) has been studied as a potential candidate gene for Parkinson's disease risk, but direct evidence from genetic association studies remains inconclusive. We performed a meta-analysis pooling data from all relevant studies in order to determine the effects of two PON 1 polymorphisms (L55M and Q192R) on Parkinson's disease.We applied a random effects to combine odds ratio (OR)...
The calcium-sensing receptor (CaSR) is involved in maintaining calcium homeostasis via the regulation of parathyroid hormone (PTH) secretion. The associations between serum calcium concentrations, parathyroid hormone (PTH) level and CaSR polymorphism A986S have been studied, but results are inconsistent. Therefore, we performed a meta-analysis to clarify the role of this polymorphism on this topic...
In this study, we have engineered a new bifunctional protein named “helimerase”, by physically linking Thermoanaerobacter tengcongensis UvrD helicase (TteUvrD) and Bacillus stearothermophilus DNA polymerase I Large Fragment (Bstpol) using a coiled-coil. TteUvrD is fused with one part of the coiled-coil, WinZip-A2 (WZA2), through a linker L1 and possesses a Maltose Binding Protein (MBP) tag at the...
Growth hormone is a classic molecule in the study of the molecular clock hypothesis as it exhibits a relatively constant rate of evolution in most mammalian orders except primates and artiodactyls, where dramatically enhanced rate of evolution (25–50-fold) has been reported. The rapid evolution of primate growth hormone occurred after the divergence of tarsiers and simians, but before the separation...
Chemokine-like factor 1(CKLF1) is a newly cloned cytokine with three RNA splicing isoforms. It has chemotactic activities on leukocytes and plays an important role in skeletal muscle regeneration. Here we have isolated two rat homologues of human chemokine-like factors by expressed sequence tag assembly, which are designated as rat chemokine-like factor 1 and 2 (rat CKLF1, CKLF2). The full-length...
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