§173.170 食品添加剂氨基葡糖苷3�?磷酸转移酶II(Aminoglycoside 3�?phosphotransferase II)

　　�� 173.170 Aminoglycoside 3��-phosphotransferase II.

　　The food additive aminoglycoside 3��-phosphotransferase II may be safely used in the development of genetically modified cotton, oilseed rape, and tomatoes in accordance with the following prescribed conditions:

　　（a� The food additive is the enzyme aminoglycoside 3��-phosphotransferase II （CAS Reg. No. 58943�C39�C8� which catalyzes the phosphorylation of certain aminoglycoside antibiotics, including kanamycin, neomycin, and gentamicin.

　　（b� Aminoglycoside 3��-phosphotransferase II is encoded by the kan rgene originally isolated from transposon Tn5of the bacterium Escherichia coli.

　　（c� The level of the additive does not exceed the amount reasonably required for selection of plant cells carrying the kan rgene along with the genetic material of interest.

　　[59 FR 26711, May 23, 1994]

　　更多关于美国 FDA 可直接加入食品中的辅助性食品添加剂的种类法规，请点出�a href="//www.sqrdapp.com/law/dongtai/171830.html">美国FDA 21 CFR �?73部分可直接加入食品中的辅助性食品添加剂种类汇怺�/a>