2 deoxy-d-glucose

[Christie]

I was wondering if anyone could tell me and give me a 
reference for how and where the glucose antagonist 2 
deoxy-d-glucose works to inhibit glucose 
utilization /glycolysis?  All of the articles I have read 
so far just say it inhibits glucose metabolism.  I have 
heard two explanations: 
1) It inhibits the glucose receptor, therefore blocking 
glucose utilization so its effects may be blocked with 
glucose or dextrose or allowing animals (hamsters, etc.) to 
eat ad lib.
2) It inhibits one of the steps of glycolysis by enzyme 
competition/incompatibility.
Thanks for you help.
Christina McManus
University of Kentucky
Dept. of Veterinary Science