[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR173.170]
[Page 135.136]
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
SERVICES (CONTINUED)
PART 173 SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN
Subpart B Enzyme Preparations and Microorganisms
Sec. 173.170 Aminoglycoside 3'-phospho trans ferase 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. 58943-39-8) which catalyzes the
phosphorylation of certain aminoglycoside antibiotics, including
kanamycin, neomycin, and gentamicin.
(b) Aminoglycoside 3'-phos pho trans ferase II is encoded by the
kanr gene originally isolated from transposon Tn5 of the
bacterium Escherichia coli.
(c) The level of the additive does not exceed the amount reasonably
required for selection of plant cells carrying the
[[Page 136]]
kanr gene along with the genetic material of interest.
[59 FR 26711, May 23, 1994]
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