This is what Defra says:
http://www.defra.gov.uk/wildlife-countryside/g wd/wolfdogs/wolfdogs.pdf
A wolf cannot be domesticated. A wolf is NOT aggressive and will not attack dogs/humans. In a pack wolves do not attack each other they maintain heirarchy by facial/body expressions. Pack leaders change according to what a pack is doing at the time. The Alpha male and female are usually the breeding pair.
A wolf cannot be housetrained. They continue to scent mark.
A wolf will never interact with humans in a way a dog will no matter what age you take it in. Once it reaches maturity at 2 years of age it will revert to being a wild animal. You will never see a wolf being recalled on a walk off lead like a normal GSD etc.
The wolf may be the ancestor of the domestic dog but it has been changed over many many generations.
If you took a domestic dog and put it in a pack of wolves it would be completely lost and would not know how to communicate. It is like putting a human child into a group of chimpanzees and expecting them to raise it!