AUTHOR CORRECTION
Volume 6, no. 3, e00896-20, 2021, https://doi.org/10.1128/mSystems.00896-20. After publication, we discovered that the authentic standard of homarine that we purchased from a commercial supplier (Santa Cruz Biotechnology, lot B1916) was contaminated with picolinic acid. This contamination resulted in an overstatement of the actual homarine concentration in these samples. The correct values for the homarine concentration are 1/25 of the previous values, based on both a commercially purchased isotope labeled standard and a newly purchased homarine standard. These values are reflected in the updated Fig. 2, Table S1, and Table S2. This change does not alter our interpretations of the data or any of the conclusions from this study.
Page 4: Fig. 2 should appear as shown below.
Supplemental material: Tables S1 and S2 should appear as in the versions posted with this correction.
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