The Hantavirus Glycoprotein G1 Tail Contains Dual CCHC-type Classical Zinc Fingers.
Estrada, D.F., Boudreaux, D.M., Zhong, D., St Jeor, S.C., De Guzman, R.N.(2009) J Biol Chem 284: 8654-8660
- PubMed: 19179334 
- DOI: https://doi.org/10.1074/jbc.M808081200
- Primary Citation of Related Structures:  
2K9H - PubMed Abstract: 
Hantaviruses are distributed worldwide and can cause a hemorrhagic fever or a cardiopulmonary syndrome in humans. Mature virions consist of RNA genome, nucleocapsid protein, RNA polymerase, and two transmembrane glycoproteins, G1 and G2. The ectodomain of G1 is surface-exposed; however, it has a 142-residue C-terminal cytoplasmic tail that plays important roles in viral assembly and host-pathogen interaction. Here we show by NMR, circular dichroism spectroscopy, and mutagenesis that a highly conserved cysteine/histidine-rich region in the G1 tail of hantaviruses forms two CCHC-type classical zinc fingers. Unlike classical zinc fingers, however, the two G1 zinc fingers are intimately joined together, forming a compact domain with a unique fold. We discuss the implication of the hantaviral G1 zinc fingers in viral assembly and host-pathogen interaction.
Organizational Affiliation: 
Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas 66045.