Any process involved in the controlled movement of a bacterial cell which is dependent on the presence of type IV pili. Includes social gliding motility and twitching motility.

A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of a type IV pilus. A type IV pilus is composed of a pilus fiber and approximately ten proteins at its base; type IV pili play a role in cell motility, adherence to substrates, and aggregation.

The assembly of a pilus, a short filamentous structure on a bacterial cell, flagella-like in structure and generally present in many copies. Pili are variously involved in transfer of nucleic acids, adherence to surfaces, and formation of pellicles. Is required for bacterial conjugation, or can play a role in adherence to surfaces (when it is called a fimbrium), and in the formation of pellicles.

A short filamentous structure on the surface of a bacterial cell distinguished from other pili by post-translational N-methylation of the pilin monomers.