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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Protein Expr Purif. 2015 Aug 6;115:1–10. doi: 10.1016/j.pep.2015.08.005

Figure 2.

Figure 2

Comparison of signal intensities relative to noise in 1D-HNCO (512 transients each) slices. Enhanced fractional carbon-13 enrichment can be reproduced under several conditions, including (a) a different induction time (48 hr at 18 °C) in trial 3 and (b) short induction at 37 °C in trial 4, resulting in 17% and 20% carbon-13 incorporation respectively. (Table 1) Open symbols on the cell density data indicate the time of induction.