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发明公开
CN104278015A 一株高效过表达内源虾青素合成酶基因的法夫酵母菌株 失效 - 权利终止

一株高效过表达内源虾青素合成酶基因的法夫酵母菌株
摘要：
一株高效过表达内源虾青素合成酶基因的法夫酵母菌株。本发明提供了一株过表达内源虾青素合成酶基因得到的法夫酵母高产虾青素基因工程菌株，通过游离质粒过表达虾青素合成酶基因crtS,获得了高产虾青素的法夫酵母基因工程菌株(MK19-pGBKT7crtS)，将其定名为CSR19。该菌株表达的crtS基因前带有内源的核糖体结合位点序列(简称Rbs.序列)。经发酵培养并与受体菌株MK19相比，该工程菌株的虾青素产量提高了33.5％，且稳定性好，在饲料工业中具有良好的应用前景。
摘要（英）：

The invention discloses a phaffia rhodozyma strain obtained by efficiently an over-expressing endogenous astaxanthin synthetase gene. The invention provides a phaffia rhodozyma genetic engineering strain capable of producing astaxanthin with high yield, obtained by over-expressing an endogenous astaxanthin synthetase gene. A phaffia rhodozyma genetic engineering strain (MK19-pGBKT7crtS) capable of producing astaxanthin with high yield is obtained by over-expressing the astaxanthin synthetase gene crtS by virtue of free plasmids and the strain is named CSR19. An endogenous ribosome bind site sequence (Rbs. sequence for short) exists in front of the crtS gene expressed by the strain. By virtue of fermentation cultivation and in comparison with a receptor strain MK19, the astaxanthin yield of the engineering strain is increased by 33.5%, and the engineering strain is good in stability, and thus, the phaffia rhodozyma strain has a good application prospect in the feed industry.

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