| 别名 |
(-)-alpha-pinene cyclase, (-)-alpha-pinene/(-)-camphene synthase, (-)-limonene/(-)-alpha-pinene synthase, (-)-pinene cyclase, (-)-pinene synthase, ag6, ag9, alpha pinene sythase, alpha-pinene sythase, AvPS, AvTPS1, camphene synthase, cyclase II, LPS, mono-tps, More, pinene synthase, pinene-synthase, PlPIN, PT1, QH6, TPS-(-)apin1, TPS-(-)bpin2, TPS1, TPS2, TPS3 |
| Comments |
Cyclase II of?Salvia officinalis?(sage) gives about equal parts (?)-¦Á-pinene, (?)-beta-pinene and (?)-camphene, plus traces of other monoterpenoids. (3S)-Linalyl diphosphate can also be used by the enzyme in preference to (3R)-linalyl diphosphate. The 4-pro-S?hydrogen of geranyl diphosphate is lost. Requires Mg2+?(preferred to Mn2+) [1-6]. The enzyme from?Abies grandis?(grand fir) gives roughly equal parts (?)-¦Á-pinene and (?)-beta-pinene. However the clone ag11 gave 35% (?)-limonene, 24% (?)-¦Á-pinene and 20% (?)-beta-phellandrene. It requires Mn2+?and K+?(Mg2+?is ineffective) [7-10]. Synthase I from?Pinus taeda?(loblolly pine) produces (?)-¦Á-pinene with traces of (?)-beta-pinene and requires Mn2+?(preferred to Mg2+) [11,12]. The enzyme from?Picea sitchensis?(Sika spruce) forms 70% (?)-¦Á-pinene and 30% (?)-beta-pinene [13]. The recombinant PmeTPS1 enzyme from?Pseudotsuga menziesii?(Douglas fir) gave roughly equal proportions of (?)-¦Á-pinene and (?)-camphene plus traces of other monoterpenoids [14]. See also EC?4.2.3.120, (?)-beta-pinene synthase; EC?4.2.3.117, (?)-camphene synthase; EC?4.2.3.16, (?)-limonene synthase; and EC?4.2.3.52, (?)-beta-phellandrene synthase. |
