1994 Fiscal Year Final Research Report Summary
Purification OF THCA synthase from Cannabis callus
| Project/Area Number |
05671830
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Biological pharmacy
|
|---|
| Research Institution | KYUSHU UNIVERSITY |
|---|
Principal Investigator |
MORIMOTO Satoshi Kyusyu University, Faculty of pharmaceutical Sciences Associate Professor, 薬学部, 助教授 (60191045)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SHOYAMA Yukihiro Kyusyu University, Faculty of pharmaceutical Sciences Professor, 薬学部, 教授 (70037604)
|
|---|
| Project Period (FY) |
1993 – 1994
|
| Keywords | Cannabis sativa / Cannabinoid / Tetrahydrocannabinolic acid / Tetrahydrocannabinolic acid synthase |
|---|
| Research Abstract |
The occurrence of DELTA^1-tetrahydrocannabinolic acid synthase was confirmed in the fresh leaf buds of marihuana (Cannabis sativa L.). The enzyme, assayd with cannabigerolic acid, was purified approximately 300-fold by chromatography on diethylaminoethyl-cellulose, phenyl Sepharose CL-4B and hydroxylapatite. The purified protein migrated during sodium dodecylsulfate-polyacrylamide gel electrophoresis (SDS-PAGE) as a single band with a molecular mass of 75kD.The native molecular mass determined by gel-filtration chromatography was 74 kDa, indicating that DELTA^1-tetrahydrocannabinolic acid synthase is a monomeric enzyme. Using isoelectric focusing, we determined a pI of 6.4 for the enzyme. The enzyme activity was greatest between pH5.5 and 6.0. The enzyme catalyzed the conversion of cannabigerolic acid or cannabinerolic acid to DELTA^1-tetrahydrocannabinolic acid. The V_<max> values were 2.68 and 0.37 nkat/mg for cannabigerolic acid and cannabinerolic acid, respectively. These results indicated that DELTA^1-tetrahydrocannabinolic acid is predominantly formed from cannabigerolic acid.
|
Research Products
(2 results)
