polyhedrin

For the three dimensional shape, see Polyhedron

File: 5exy.jpg.]]

{{Pfam box

| Symbol = Polyhedrin

| Name = Polyhedrin

| Pfam = PF00738

| InterPro = IPR001746

| PROSITE =

| image = Jmol2WUX.pdb.jpg

| width =

| caption = The crystal structure of a recombinant baculovirus polyhedrin.{{PDB|2WUX}}; {{cite journal |vauthors=Ji X, Sutton G, Evans G, Axford D, Owen R, Stuart DI | title = How baculovirus polyhedra fit square pegs into round holes to robustly package viruses | journal = EMBO J. | volume = 29 | issue = 2 | pages = 505–14 |date=January 2010 | pmid = 19959989 | pmc = 2824454 | doi = 10.1038/emboj.2009.352 }}

}}

Polyhedrins are a type of viral protein that form occlusion bodies (also called polyhedra), large structures that protect the virus particles from the outside environment for extended periods until they are ingested by susceptible insects. They occur in various viruses including nuclear polyhedrosis viruses (NPVs) and granuloviruses (GVs). GVs contain one virus particle per occlusion,{{cite journal|last1=Rohrmann|title=Polyhedrin structure.|journal=J Gen Virol|date=1986|pmid=3525744|doi=10.1099/0022-1317-67-8-1499|volume=67|pages=1499–513|issue=8|doi-access=free}} whereas NPVs package about 5–15 viruses in each occlusion.