There are two major families of molecular motors that transport organelles throughout the cell. These families include the dynein family and the kinesin family. Both have very different structures from one another and different ways of achieving a similar goal of moving organelles around the cell. These distances, though only few micrometers, are all preplanned out using microtubules.
* Kinesin These molecular motors always move towards the positive end of the cell
** Uses ATP hydrolysis during the process converting ATP to ADP
*** This process consists of ...
**** The "foot" of the motor binds using ATP, the "foot" proceeds a step, and then ADP comes off. This repeats itself until the destination has been reached
** The kinesin family consists of a multitude of different motor types
*** Kinesin-1 (Conventional)
*** Kinesin-2 (Heterotrimeric)
*** Kinesin-5 (Bipolar)
*** Kinesin-13
* Dynein These molecular motors always move towards the negative end of the cell
** Uses ATP hydrolysis during the process converting ATP to ADP
** Unlike kinesin, the dynein is structured in a different way which requires it to have different movement methods. 
*** One of these methods includes the power stroke, which allows the motor protein to "crawl" along the microtubule to its location. 
** The structure of dynein consists of 
*** A Stem Containing 
**** A region that binds to dynactin 
**** Intermediate/light chains that will attach to the dynactin bonding region 
*** A Head
*** A Stalk
**** With a domain that will bind to the microtubule
:::::These molecular motors tend to take the path of the microtubules. This is most likely due to the facts that the microtubules spring forth out of the centrosome and surround the entire volume of the cell. This in turn creates a "Rail system" of the whole cell and paths leading to its organelles.