Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha-chain. Dimer of alpha and beta chains. Belongs to the tubulin family. Note: This description may include information from UniProtKB.
Protein type: Cytoskeletal; Motility/polarity/chemotaxis