To the article “Multiprotein Complexes of the Survival of Motor Neuron Protein SMN with Gemins Traffic to Neuronal Processes and Growth Cones of Motor Neurons” by Honglai Zhang, Lei Xing, Wilfried Rossoll, Hynek Wichterle, Robert H. Singer, and Gary J. Bassell, which appeared on pages 8622–8632 of the August 16, 2006 issue, the authors would also like to add acknowledgment of support from NIH AR41480 to Robert H. Singer.