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金秀一,李錫河,李弘石,文亢植,羅志英 서울大學校 農科大學 1985 서울대농학연구지 Vol.10 No.1
대두의 단백추출액을 polyacrylamide gel 전기영동에 의하여 분류하고 trypsin inhibitor (T.I) band를 동정하였다. T.I. band는 전기영동한 gel을 trypsin으로 가수분해하거나 추출액에 trypsin을 처리한 후 전기영동하거나 발색기질을 이용하여 gel을 착색시키거나 또는 gel slice의 T.I.activity를 측정하는 등 네 가지 방법을 사용하여 검정하였다. 이중 추출액을 trypsin으로 처리한 후 전기영동하는 방법과 gel slice의 T.I.activity를 측정하는 방법이 가장 적합하였으며 두 방법의 결과를 비교하여 T.I.band를 검정하는 것이 보다 확실하였다. Sephadex G-75 Chromatography 에서 물로 추출한 대두 단백질은 3 fraction으로 분리하였고 T.I.activity는 제 2 fraction 에만 나타났다. Kunitz 및 Bowman-Birk형 inhibitor는 DEAE-cellulose column chromatography로 분리하였다. Kunitz형은 5개의 fraction으로, Bowman-birk형은 4개의 fraction으로 분리되었다. 단백질 추출액과 DEAE-cellulose chormatography에서 분리된 Kuniz 및 Bowman-Birk T.I.의 polyacryamide gel 전기영동 pattern을 비교하여 본 결과, 확실하게 동정된 T.I.band는 band3과 band4로서 각각 Orf등이 발표한 Ti¹과 Ti2에 해당하였으며, 그 외에 band 6과 band 10이 T.I.로 추정되었고 band 1,2,5,7,8,9는 T.I.가 아닌 것으로 판명되었다. trypsin inhibitor 함유량은 총 trypsin units inhibited 값(T.U.I)으로 볼 때 42품종에서 25에서 76까지 품종 간에 차이가 현저하였으며 시비 및 파종기의 영향은 나타나지 않았다. Ti¹ inhibitor 를 보유하고 있는 것은 37품종이었고, Ti²를 보유하는 것은 7품종이었으며, Ti¹과 Ti²를 같이 가지고 있는 품종은 발견되지 않았다. 이러한 품종의 Ti¹,Ti² 보유 pattern은 재배조건에 의해 변화되지 않았다. 2조합의 pattern은 재배조건에 의해 변화되지 않았다. 2조합의 정역교배에서 얻은 F₁ 종자의 전기영동 pattern을 비교해 본 결과, Ti¹품종끼리의 교배종자에서는 정역교배에 상관없이 Ti¹ inhibitor 만 나타났고 Ti¹품종과 Ti²품종의 교배종자에서는 Ti²를 모본으로 한 종자에서는 Ti¹과 Ti² 두 inhibitor가 검출되었으나 여교배에서는 모본의 Ti¹ inhibitor만 검출되었다. 여교배에서 Ti¹만 나타난 것은 분석시료 종자가 적었고 교배의 여부를 확인할 수 없어 모본의 세포질적 영향에 의한 것인지 또는 자가수정에 의한 것인지 분명치 않았다. The protein extracts from soybean seeds were examined by polyacrylamide gel electrophoresis and the trypsin inhibitor (T.I) bands were detected. The water-extractable protein was fractionated into three fractions by Sephadex G-75 gel filtration. The T.I activity was found only in the second fraction. Kunitz and Bowman-Birk inhibitors were fractionated by DEAE-cellulose chromatography into seven and six fractions, respectively. In kunitz inhibitor, 5 fractions were found to have T.I activity and 4 fractions in Bowman-Birk inhibitor. From the and patterns of the protein extracts and those of DEAE-cellulose chromatographic fractions, it was found that band 3 and 4 were T.I. band, corresponding to Ti¹ and Ti² band, respectively. In addition, band 6 and 10 were presumed to be T.I. band. Of the 42 varieties sampled, 35 revealed only Ti¹ band and 7 only Ti² band. The T.I. band patterns were not changed by the culture condition. The T.I. content, when expressed as the number of trypsin units inhibited (T.U.I), showed remarkable differences from 25 to 76 between varieties. The seedtime and fertilization condition had no effect on the T.I. content. Judged from the results of F ₁seeds analysis, we assumed that Ti¹ and Ti²band were controlled by codominant allele at a single locus.
Balaji, S.,Kannan, K.,Moon, I. S. The Royal Society of Chemistry 2015 Physical chemistry chemical physics Vol.17 No.46
<P>The electrochemical oxidation of toluene in <I>N</I>-butyl-<I>N</I>-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([bmpyr]<SUP>+</SUP>[Ntf<SUB>2</SUB>]<SUP>−</SUP>) was investigated by using cyclic voltammetry and galvanostatic electrolysis in the presence of Co(<SMALL>II</SMALL>) at a Pt disc working electrode. Cyclic voltammetry (CV) investigations revealed that Co(<SMALL>II</SMALL>)–Co(<SMALL>III</SMALL>) oxidation is a diffusion controlled electron transfer process. The diffusion coefficient values of Co(<SMALL>II</SMALL>) were found to increase from 0.38 × 10<SUP>−7</SUP> to 1.9 × 10<SUP>−7</SUP> cm<SUP>2</SUP> s<SUP>−1</SUP> as the temperature was increased from 25 °C to 80 °C. The CV peak current for toluene electro-oxidation increased by nearly 7 fold in the presence of Co(<SMALL>II</SMALL>) demonstrating a good catalytic effect. Co(<SMALL>II</SMALL>) catalysed galvanostatic electrolysis of toluene at room temperature has shown that benzaldehyde was formed along with a small quantity of 3-methyl-1-hexanol.</P> <P>Graphic Abstract</P><P>Co(<SMALL>II</SMALL>) catalysed electro-oxidation of toluene in room temperature ionic liquid. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c5cp04151a'> </P>
Kim, T.-B.,Oh, S.-Y.,Park, H.-K.,Jeon, S.-G.,Chang, Y.-S.,Lee, K.-Y.,Cho, Y. S.,Chae, I.-H.,Kim, Y.-K.,Cho, S.-H.,Moon, H.-B.,Min, K.-U.,Kim, Y.-Y. Blackwell Publishing Ltd 2009 Journal of clinical pharmacy and therapeutics Vol.34 No.4
<P>Summary</P><P>Background and objective: </P><P>Treatment with angiotensin-converting enzyme (ACE) inhibitors can induce chronic cough in many patients. Genetic variations in the neurokinin 2 receptor gene (NK2R) are significantly associated with cough sensitivity to capsaicin.</P><P>Methods: </P><P>This study assessed the relationship between genetic polymorphisms in the NK2R gene and chronic cough in 91 patients taking ACE inhibitors. Patients included in the study did not have chest abnormalities, postnasal drip, gastroesophageal reflux or a recent history of upper respiratory infection.</P><P>Results: </P><P>We detected two single nucleotide polymorphisms in the NK2R gene (i.e., Gly231Glu and Arg375His). The allelic frequencies at amino acid 231 were 36·3% for Gly/Gly, 49·5% for Gly/Glu and 14·3% for Glu/Glu. The allelic frequencies at amino acid 375 were 74·7% for Arg/Arg, 24·2% for Arg/His and 1·1% for His/His. The prevalence of chronic cough in patients with the amino acid 231 genotype was 33·3% in Gly/Gly homozygotes, 24·4% in Gly/Glu heterozygotes and 0% in Glu/Glu homozygotes. There was a statistically significant association between chronic cough and the Glu/Glu allele (<I>P</I> = 0·028) when the data were analyzed with a recessive model. In addition, there was a significant inverse linear association between the number of Glu231 alleles and ACE inhibitor-related cough (<I>P </I>=<I> </I>0·026). The prevalence of chronic cough in patients with the amino acid 375 genotype was 22·1% in Arg/Arg homozygotes, 31·8% in Arg/His heterozygotes and 0% in His/His homozygotes, although none of these association were statistically significant.</P><P>Conclusion: </P><P>Our findings indicate that the Gly231Glu polymorphism is associated with a lower prevalence of ACE inhibitor-related cough.</P>