21 CFR 173.170
§ 173.170 Aminoglycoside 3′-phosphotransferase II.
United States · 21 CFR — Food and Drugs · Status: effective
Cite this
- Citation
- 21 CFR 173.170, § 173.170 Aminoglycoside 3′-phosphotransferase II, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/85116
- Permanent ID
ys:prov:85116@1- SHA-256
b3a60f8fdd4ef99239e0e20314eb0648408b7fe771f9b48ab5615a5e9248088a
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
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′-phosphotransferase II is encoded by the kan r 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 kan r gene along with the genetic material of interest.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.