May overlap in function with tropomyosin and may be involved in organization of actin filaments. Acts as a multicopy suppressor of RHO3 mutation. RNA-binding protein which may modulate mRNA translation. Involved in heme regulation of HAP1, as a component of the high-molecular-weight complex (HMC). Interacts with HAP1. Component of the HMC including HAP1, SRO9 and YDJ1. Associates with translating ribosome. Present with 8430 molecules/cell in log phase SD medium.