sentence: C. reinhardtii apparently uses PF13 / KTU mainly for outer arm dynein and MOT48 mainly for inner arm dyneins , although their functions are somewhat redundant and not strictly specific.We attempted to detect interaction between MOT48 and heat shock protein 70 ( HSP70 ) in the cytoplasm because PF13 / KTU has been suggested to function as a cofactor of HSP70 .