RNA silencing suppressor  are viral proteins which suppress the silencing RNA (siRNA) that are part of the plant antiviral defense mechanism.  For details see
 3D structures of RNA silencing suppressor
Updated on 25-February-2016
2zi0 – TAV2B + siRNA – Tomato aspermy virus 
3ajf – NS3 protein helix domain – Rice hoja blanca virus 
2cwo – P21 – Beet yellows virus 
1r9f, 4j39, 4j5v, 4jgn, 4jk0, 4jnx, 4knq, 4ktg – TbsvP19 + siRNA – Tomato bushy stunt virus 
4knq – TbsvP19 (mutant) + siRNA  
1rpu – P19 + siRNA – Carnation Italian ringspot virus