In the Research Article “Sleep Promotion by 3-Hydroxy-4-Iminobutyric Acid in Walnut
Diaphragma juglandis Fructus,” [
1] the authors have identified an error in the Results section and Figure
1. The original statement was:
“C2 was annotated as 3-hydroxy-4-iminobutyric acid (HIBA) (Fig.
1N). The structure of HIBA is similar to that of GABA, except that HIBA only has one more -OH than GABA (Fig.
1O), which indicates that HIBA may have a similar molecular function to GABA.”
“C2 was annotated as 3-hydroxy-4-iminobutyric acid (HIBA) (Fig.
1N). The structure of HIBA is similar to that of GABA, except that HIBA has one more -OH group compared to GABA. The carbon-4 position of HIBA is connected to an imino group (-NH=), while the carbon-4 position of GABA is connected to an amino group (-NH
2) (Fig.
1O). It indicates that HIBA may have a similar molecular function to GABA.”
The panels of Figure
1 have been corrected in the original publication and below (Fig.
1).