786
This localization is in turn dependent on the Homer family of scaffolding proteins which bind to a small motif on the distal C - termini of mGluR1 and 5 , localize the receptors near the PSD , strengthen coupling to post - synaptic effectors and simultaneously uncouple the mGluRs from extra - synaptic effectors such as voltage dependent ion channels .
 Chemical: C
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: C