1CMV

HUMAN CYTOMEGALOVIRUS PROTEASE

Summary for 1CMV

• Entry DOI: 10.2210/pdb1cmv/pdb
• Descriptor: HUMAN CYTOMEGALOVIRUS PROTEASE (2 entities in total)
• Functional Keywords: coat protein, hydrolase, serine protease, phosphorylation
• Biological source: Human herpesvirus 5 (Human cytomegalovirus)
• Cellular location: Protease precursor: Host cytoplasm. Assemblin: Host nucleus. Assembly protein: Host nucleus: P16753
• Total number of polymer chains: 2
• Total formula weight: 56142.96

Authors

Shieh, H.-S.,Kurumbail, R.G.,Stevens, A.M.,Stegeman, R.A.,Sturman, E.J.,Pak, J.Y.,Wittwer, A.J.,Palmier, M.O.,Wiegand, R.C.,Holwerda, B.C.,Stallings, W.C. (deposition date: 1996-08-26, release date: 1997-09-04, Last modification date: 2024-02-07)

Primary citation

Shieh, H.S.,Kurumbail, R.G.,Stevens, A.M.,Stegeman, R.A.,Sturman, E.J.,Pak, J.Y.,Wittwer, A.J.,Palmier, M.O.,Wiegand, R.C.,Holwerda, B.C.,Stallings, W.C.
Three-dimensional structure of human cytomegalovirus protease.
Nature, 383:279-282, 1996

PubMed Abstract: Herpesviruses encode a serine protease that specifically cleaves assembly protein. This protease is critical for replication, and represents a new target for antiviral drug design. Here we report the three-dimensional structure of the protease from human cytomegalovirus (hCMV) at 2.27 angstroms resolution. The structure reveals a unique fold and new catalytic strategy for cleavage. The monomer fold of the enzyme, a seven-stranded beta-barrel encircled by a chain of helices that form the carboxy terminus of the molecule, is unrelated to those observed in classic serine proteases such as chymotrypsin and subtilisin. The serine nucleophile at position 132 is activated by two juxtaposed histidine residues at positions 63 and 157. Dimerization, which seems to be necessary for activity, is observed in the crystals. Correlations of the structure with the sequences of herpesvirus proteases suggest that dimerization may confer specificity and recognition in substrate binding.

PubMed: 8805708
DOI: 10.1038/383279a0

Experimental method

X-RAY DIFFRACTION (2.27 Å)