What molecules are involved in the sodium potassium pump?
ATP, (and its product, ADP and Pi), Na+, K+, and the transmembrane protein
The transmembrane itself looks like this. You can see the phosphorylation sites.
What is interesting is, there are a lot of toxin that can bind to various places on this protein.
Stevens M, et. al., 2011, Neurotoxins and their binding areas on voltage-gated sodium channels., Frontiers in Pharmacology