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Anderson JA, Brustkern S, Cong B, Deege L, Delaney B, Hong B, Lawit S, Mathesius C, Schmidt J, Wu J, Zhang J, Zimmermann C. Evaluation of the History of Safe Use of the Maize ZMM28 Protein. J Agric Food Chem 2019; 67:7466-7474. [PMID: 31184886 DOI: 10.1021/acs.jafc.9b00391] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The ZMM28 protein encoded by the zmm28 gene is endogenous to maize. DP202216 maize was genetically modified to increase and extend expression of the zmm28 gene relative to native zmm28 gene expression, resulting in plants with enhanced grain yield potential. Evaluation of the history of safe use (HOSU) is one component of the safety assessment framework for a newly expressed protein in a GM crop. The deduced amino acid sequence of the introduced ZMM28 protein in DP202216 maize is identical to the ZMM28 protein in nonmodified conventional maize. The ZMM28 protein has also been found in selected varieties of sweet corn kernels, and closely related proteins are found in other commonly consumed food crops. Concentrations of the ZMM28 protein in event DP202216 maize, conventional maize, and sweet corn are reported. This information supports, in part, the evaluation of HOSU, which can be leveraged in the safety assessment of the ZMM28 protein. Additional studies will be considered in the food and feed safety assessment of the DP202216 maize event.
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Affiliation(s)
- Jennifer A Anderson
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Sarah Brustkern
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Bin Cong
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Lora Deege
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Bryan Delaney
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Bonnie Hong
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Shai Lawit
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Carey Mathesius
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Jean Schmidt
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Jingrui Wu
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - John Zhang
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
| | - Cindi Zimmermann
- Corteva Agriscience , Agriculture Division of DowDuPont , Johnston , Iowa 50131 , United States
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