CVNH domain
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| CVNH | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 solution nmr structure of complex of 1:2 cyanovirin-n:man-alpha1,2-man-alpha restrained regularized mean coordinates | |||||||||
| Identifiers | |||||||||
| Symbol | CVNH | ||||||||
| Pfam | PF08881 | ||||||||
| InterPro | IPR011058 | ||||||||
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In molecular biology, the CVNH domain (CyanoVirin-N Homology domain) is a conserved protein domain. It is found in the sugar-binding antiviral protein cyanovirin-N (CVN) as well as proteins from filamentous ascomycetes and in the fern Ceratopteris richardii.[1]
Cyanovirin-N (CV-N) is an 11-kDa protein from the cyanobacterium Nostoc ellipsosporum that displays virucidal activity against several viruses, including human immunodeficiency virus (AIDS). The virucidal activity of CV-N is mediated through specific high-affinity interactions with the viral surface envelope glycoproteins gp120 and gp41, as well as to high-mannose oligosaccharides found on the HIV envelope.[2] In addition, CV-N is active against rhinoviruses, human parainfluenza virus, respiratory syncytial virus, and enteric viruses. The virucidal activity of CV-N against influenza virus is directed towards viral haemagglutinin.[3] CV-N has a complex fold composed of a duplication of a tandem repeat of two homologous motifs comprising three-stranded beta sheet and beta hairpins.[4]