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Reduced Protein Denaturation in Thermotolerant Cells by Elevated Levels of HSP70
한미영(Mi Young Han), 박영미(Young-Mee Park) 대한약리학회 대한약리학잡지 11 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 15 433-443 (11 pages)
of HSP70 specific mAbs, suggesting an involvement of HSP70 in reducing HMA levels in thermotolerant cells upon heat exposure. Immunoprecipitation studies using anti-HSP70 antibody indicated an association of HSP70 with heat-denatured proteins. Our results suggest that heat induces protein denaturation, and that elevated level of HSP70 present in thermotolerant cells protects them by reducing the level of protein denaturation rather than by facilitating the repair (or degradation) process. -
기능성 어육단백질의 젤화 특성과 산업적 응용-1. 가열변성 중 화학결합에 미치는 pH의 영향
정춘희, 김진수, 진상근, 김일석, 정규진, 최영준, Jung. Chun-Hee, Kim. Jin-Soo, Jin. Sang-Keun, Kim. Il-Suk, Jung. Kyoo-Jin, Choi. Yeung-Joon 한국식품영양과학회 한국식품영양과학회지 8 Pages
한국식품영양과학회 한국식품영양과학회지 2004, Vol.33 No.10 1668-1675 (8 pages)
pH 10에서 비교적 큰 것으로 나타났다. SDS-PAGE 상에서 pH가 상승함에 따라 myosin heavy chain의 중합체가 확인되었다. 알칼리 공정으로 제조한 회수 단백질을 시차주사열량계로 분석한 결과, 회수 단백질은 33.1,44.3 및 65.5$^{circ}C$에서 전이 온도가 나타나며, myosin의 변성 에 해당하는 온도인 51.7$^{circ}C$의 peak는 보이지 않았다. 회수 단백질의 가열 젤은 극단적 인 pH 처리에 의한 $alpha$-helix 구조의 $eta$-sheet 구조 전환, 가열에 의한 S-S 결합의 형성과, myosin heavy chain 중합체 형성에 의한 것으로 보인다. -
pH, NaCl 및 phosphate 첨가에 따른 돈육 드립의 열안정성 및 색에 관한 연구
김천제, 이창현, 송민석, 이의수, 조진국, Kim. Cheon-Jei, Lee. Chang-Hyun, Song. Min-Seok, Lee. Eui-Soo, Cho. Jin-Kook 한국식품과학회 한국식품과학회지 6 Pages
한국식품과학회 한국식품과학회지 2000, Vol.32 No.6 1285-1290 (6 pages)
pH가 증가함에 따라 드립의 열안정성은 증가하였으며, 특히 $T_1$이 $pH;5.5{sim}6.0$에서 $6.33^{circ}C$의 가장 큰 증가를 보였다. 그리고 NaCl농도의 증가는 드립의 열안정성을 감소시켰는데 그중 $T_1$은 5% NaCl농도 수준에서 $9.41^{circ}C$의 감소를 보였다. 한편 STPP는 드립이 열안정성을 증가시켰으며 0.5% STPP농도 수준에서 $T_1$이 $5.84^{circ}C$의 증가를 보였다. $40{sim}100^{circ}C$로 증가함에 따라 $Lightness(L^*)$는 41.13에서 69.54로 증가하였고 $redness(a^*)$는 26.70에서 5.40으로 감소하였다. 특히 $L^*-$과... -
Comparision of the Pressure Denaturation of Metmyoglobin in $H_2O$ and $D_2O$
김건, Kim. Keon 대한화학회 대한화학회지 6 Pages
대한화학회 대한화학회지 1984, Vol.28 No.1 14-19 (6 pages)
메트미오글로빈의 압력에 의한 변성의 $H_2O$와 $D_2O$에서의 차이를 pH 5.7과 pH 7.0에서 연구하였다. 메트미오글로빈은 $D_2O$에서 $H_2O$보다 더 작은 압력에서 변성하였다. 그 차이가 pH 5.7에서가 pH 7에서 보다 더 컸다. $H_2O$와 $D_2O$에서 이 안정도의 차이가 단백질에 대한 $H^+$와 $D^+$의 결합에 차이가 있기 때문이며 또한, 수소가 중수소로 바뀜에 따르는 구조 변화 때문인 것으로 사료된다. -
Genomic characterization and pathogenic study of two porcine reproductive and respiratory syndrome viruses with different virulence in Fujian, China
Xiukun Sui, Ting Xin, Xiaoyu Guo, Hong Jia, Ming Li, Xintao Gao, Jing Wu, Yitong Jiang, L.Willems, Hongfei Zhu, Shaohua Hou 대한수의학회 Journal of Veterinary Science 11 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 3호 3 339-349 (11 pages)
Two strains of porcine reproductive and respiratory syndrome virus (PRRSV) were isolated in 2006 and 2016 and designated as FZ06A and FZ16A, respectively. Inoculation experiments showed that FZ06A caused 100% morbidity and 60% mortality, while FZ16A caused 100% morbidity without death. By using genomic sequence and phylogenetic analyses, close relationships between a Chinese highly pathogenic PRRSV strain and the FZ06A and FZ16A strains were observed. Based on the achieved results, multiple... -
Calcium-sensing receptor-mediated L-tryptophan-induced secretion of cholecystokinin and glucose-dependent insulinotropic peptide in swine duodenum
Xiuying Zhao, Yihan Xian, Chao Wang, Liren Ding, Xianglong Meng, Weiyun Zhu, Suqin Hang 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 2호 4 179-187 (9 pages)
This study aimed to elucidate the effect of tryptophan (Trp) on gut hormone secretion as well as the roles of the calcium-sensing receptor (CaSR) and its downstream signaling pathway in gut hormone secretion by assessing swine duodenal perfusion in vitro. Swine duodenum was perfused with Krebs-Henseleit buffer as a basal solution. Various concentrations (0, 10, and 20 mM) of Trp were applied to investigate its effect on gut hormone secretion. A CaSR antagonist was used to detect the involvement... -
Piglet colibacillosis diagnosis based on multiplex polymerase chain reaction and immunohistochemistry of paraffin-embedded tissues
C?ntia De Lorenzo, Caroline P. de Andrade, Ver?nica S. L. Machado, Matheus V. Bianchi, Veronica M. Rolim, Raquel A. S. Cruz, Dav 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 1호 5 27-33 (7 pages)
Enterotoxigenic Escherichia coli (ETEC) causes diarrhea in pigs, referred to as colibacillosis. The aim of this study was to optimize multiplex polymerase chain reaction (PCR) and immunohistochemistry (IHC) analyses of paraffin-embedded material to detect pathogenic E. coli strains causing colibacillosis in pigs. Multiplex PCR was optimized for fimbriae (F18, F4, F6, F5, and F41) and toxins (types A and B heat-stable toxins [STaP and STb], heat-labile toxin [LT], and type 2 Shiga toxin [STx2e]),... -
Infections by pathogens with different transmission modes in feral cats from urban and rural areas of Korea
Jusun Hwang, Nicole Gottdenker, Dae-Hyun Oh, Hang Lee, Myung-Sun Chun 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 4호 14 541-545 (5 pages)
In this study, we examine prevalences of three infectious pathogens with different transmission modes (Bartonella henselae, hemoplasma, and Toxoplasma gondii) in feral cats from urban and rural habitats. Infection status of the three pathogens in blood samples (n = 117) was determined through molecular or serological diagnostic methods. Overall prevalence of hemoplasma, Toxoplasma gondii, and Bartonella henselae was 47.9%, 50%, and 35.7%, respectively. Comparing the two habitats, only... -
Differential regulation of senescence and in vitro differentiation by 17β-estradiol between mesenchymal stem cells derived from male and female mini-pigs
Won-Jae Lee, Seung-Chan Lee, Jeong-Hyun Lee, Gyu-Jin Rho, Sung-Lim Lee 대한수의학회 Journal of Veterinary Science 12 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 2호 5 159-170 (12 pages)
The characterization and potential of mesenchymal stem cells (MSCs) are gender dependent and estrogen influences these properties. This study demonstrated that supplementation with 17β-estradiol (E2) increases the proliferation of bone marrow-MSCs derived from male and female mini-pigs (Mp- and Fp-BMSCs) in a concentration-dependent manner, with 10 M E2 suggested as the optimal dose of E2 that led to the greatest improvement in BMSCs proliferation. Supplementation of 10 M E2 resulted in... -
Molecular cloning, purification and immunogenicity of recombinant Brucella abortus 544 malate dehydrogenase protein
Alisha Wehdnesday Bernardo Reyes, Hannah Leah Tadeja Simborio, Huynh Tan Hop, Lauren Togonon Arayan, Suk Kim 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 1호 16 119-122 (4 pages)
The Brucella mdh gene was successfully cloned and expressed in E. coli. The purified recombinant malate dehydrogenase protein (rMDH) was reactive to Brucella-positive bovine serum in the early stage, but not reactive in the middle or late stage, and was reactive to Brucella-positive mouse serum in the late stage, but not in the early or middle stage of infection. In addition, rMDH did not react with Brucella-negative bovine or mouse sera. These results suggest that rMDH has the potential for use...
