Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 7 Issue 4
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- Pages.209-213
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- 1974
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Studies on the amino acid metabolism of young rice root (Part 4) -Properties of glutamic oxalacetic transaminase isozymes of rice root-
수도근(水稻根)의 Amino 산(酸) 대사(代謝)에 관(關)한 연구(硏究) -제(第) 4 보(報) 수도근(水稻根)의 Glutamic Oxalacetic Transaminase Isozyme의 성질(性質)
- Kim, Kwang Sik (Dep. of Agricultural Chemistry, College of Agriculture Chonnam National University) ;
- Kim, Young Ung (Dep. of Agricultural Chemistry, College of Agriculture Chonnam National University)
- Accepted : 1974.09.10
- Published : 1974.12.20
Abstract
The isozymes of glutamic oxalacetic transaminase from young rice root were isolated by DEAE-cellulose column chromatography, and investigated some of their enzymic properties. Obtained results were summarized as follows: 1. 93 percent of GOT activity in rice root existed in supernatant fraction, and their specific activity exibited the same pattern. 2. The rice root contained two types of GOT isozyme; cationic and anionic GOT. It seemed that both of them were distributed in supernatant fraction. 3. GOT isozymes of rice root on the pH dependance showed their maximum activity at 7.4. 4. On the stability of GOT isozymes for temperature, anionic GOT was more unstable than cationic GOT. 5. Apparent Michaelis constant for L-aspartate of GOT isozymes from rice root showed 12-14mM in the cationic GOT and 16mM in the anionic GOT, respectively.
수도근(水稻根)의 Glutamic oxalacetic transaminase isozyme을 DEAE-cellulose column chromatography에 의(依)해서 분리(分離)하고 그에 대(對)한 몇가지 성질(性質)을 구명(究明)하였든 바 얻어진 결과(結果)를 요약(要約)하면 다음과 같다. 1. 수도근(水稻根)의 GOT 활성(活性)은 93%가 Supernatant 분획(分劃)에 존재(存在)하고 Mitochondria에는 5%정도(程度)의 활성(活性)을 보이고 비활성도(比活性度)도 같은 경향(傾向)으로 거의 대부분(大部分)이 Supernatant 분획(分劃)에 국재(局在)해 있다. 2. 수도근(水稻根)의 GOT isozyme은 Cationic GOT로 존재(存在)하나 모두 Sepernatant 분획(分劃)에 국재(局在)하는 것 같다. 3. GOT isozyme의 pH에 대(對)한 반응성(反應性)은 모두 7.4에서 최고(最高)의 활성도(活性度)를 나타내었다. 4. GOT isozmye의 열안정성(熱安定性)은
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