Plum Pox Virus (PPV) is a positive sense single stranded RNA virus (+)ssRNA which is an important plant pathogen. PPV infection, also known as Sharka, affects the production of stone fruits, especially those from Prunus genus. Although these viruses are not directly dangerous to humans, they annually cause large economic and agriculture losses. We present an electron cryo-microscopy (cryo-EM) structure of the PPV virion at 2.8A resolution and determine interaction network among the viral coat protein (CP) which are critical for viral stability and structural plasticity. We show that PPV CP self-assembles into the flexible helical filaments structurally similar to the virus, which contrasts with previously reported Potato Virus Y (PVY) VLPs composed of stacks of octameric discs. In addition, we have determined near-atomic cryo-EM structures of VLPs formed CPs truncated at C-terminus which all have formed VLP filaments with a virus-like organization.