Do acetyl-CoA, acetyl-CoA carboxylase and acetyl-glutamate carry any charge?
The first compound you mention is acetyl-co-enzyme A (acetyl-CoA) (first picture, left panel). The acetyl group is uncharged, but the co-enzyme A (CoA) group (Fig. 1, right panel) does carry charge through its phosphate groups. In normal physiologic environments these phosphate groups will donate one or more protons, leaving the molecule negatively charged, as shown in Fig. 1, right panel below: 

 
Fig. 1 Acetyl-CoA (left) and the co-enzyme A group (right).  

The second compound is an enzyme, namely acetyl-CoA carboxylase. Consisting of many, many amino-acids it will carry many, many charges under physiological conditions. Some of these will be negative, some positive.

The third compound you mention is acetyl-glutamate:


Acetyl-Glutamate 

This compound carries two carboxyl groups, which makes the compound acidic and negatively charged under physiological conditions, as it will donate one or two protons to the environment, dependent on the pH.

PS: For an in-depth answer on the basic chemistry and pKa values I would ask this at Chemistry.SE :)