ABSTRACT
G protein-coupled receptors (GPCRs) are involved in all human physiological systems where they are responsible for transducing extracellular signals into cells. GPCRs signal in response to a diverse array of stimuli including light, hormones, and lipids, where these signals affect downstream cascades to impact both health and disease states. Yet, despite their importance as therapeutic targets, detailed molecular structures of only 30 GPCRs have been determined to date. A key challenge to their structure determination is adequate protein expression. Here we report the quantification of protein expression in an insect cell expression system for all 826 human GPCRs using two different fusion constructs. Expression characteristics are analyzed in aggregate and among each of the five distinct subfamilies. These data can be used to identify trends related to GPCR expression between different fusion constructs and between different GPCR families, and to prioritize lead candidates for future structure determination feasibility.
Subject(s)
Animals , Humans , Computational Biology , Crystallography, X-Ray , Gene Expression , Plasmids , Genetics , Metabolism , Protein Domains , Receptors, Adrenergic, beta-1 , Receptors, G-Protein-Coupled , Classification , Genetics , Metabolism , Receptors, Odorant , Metabolism , Receptors, Purinergic P1 , Genetics , Metabolism , Sf9 Cells , SpodopteraABSTRACT
Objective: To establish a method for controlling the quality of Agkistrodon halys's crude venom. Methods: The method of PAGE was carried out to identificate the Agkistrodon halys' crude venom, And the protein of crude venom was also assayed by Lowry's method. Results: The Agkistrodon halys's crude venom could be identified by the method of PAGE. The determintion of protein of crude venom showed a good linear relationship in a concentration range of 25 ?g?mL -1 ～250?g?mL -1 , the regression equation was Y=0.0147+ 1.4553X , and the correlation coefficient was 0.9992. The average recovery of the content reached 100.09, RSD=1.765(n=6). Conclusion: The method is simple, feasible, accurate and available, can be used to controlling of the quality of Agkistrodon halys's crude venom.
ABSTRACT
Thirty one cases of colon carcinoma were treated withChangliuping,combined with surgical operation andchemotherapy.The survuval rates of 1,3,and 5 years100%,81.25% and 65.0% respectively.Resultsshowed that this decoction is capable of improving thephysical condition,lowering the level of CEA,withcertain adjusting action on immunity,while experi-ments proved that the decoction yields marked inhibi-tion on S_(180),Lewis and EAC,on spontaneous metast-sis and marked elevation of cytoimmunity in tumorbearing mice.
ABSTRACT
AIM: To study the effects of Bingcha Embolus on the proliferation, apoptosis and cell cycle of astrocytes in vitro in terms of serum pharmacology. METHODS: The cerebral cortex astrocytes of neonatal Sprague-Dawley rats were cultivated in vitro, and the purified astrocytes were randomly devided into Bingcha Embolus groups (high dose, middle dose, low dose) and control group after being identified by means of immunocytochemical method. After the incubation of 48 h with sera, MTT was employed as a proper method to detect the proliferation of astrocytes. The ratio of apoptosis and different cell cycle phases were measured by Flow Cytometry. RESULTS: The results of MTT showed that the cell number of Bingcha Embolus groups (high dose, middle dose) were obviously fewer than that of the control group (P