Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PQS (software)

Biological Assembly 2  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 54444.27 
• Atom Count: 3313 
• Residue Count: 494 
• Unique protein chains: 1

1AT3

HERPES SIMPLEX VIRUS TYPE II PROTEASE

• DOI: 10.2210/pdb1AT3/pdb

• Classification: SERINE PROTEASE
• Organism(s): Human herpesvirus 2
• Expression System: Escherichia coli


• Deposited: 1997-08-16 Released: 1998-10-14 
• Deposition Author(s): Hoog, S., Smith, W.W., Qiu, X., Abdel-Meguid, S.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.291 
• R-Value Work: 0.205 

Literature

Active site cavity of herpesvirus proteases revealed by the crystal structure of herpes simplex virus protease/inhibitor complex.

Hoog, S.S., Smith, W.W., Qiu, X., Janson, C.A., Hellmig, B., McQueney, M.S., O'Donnell, K., O'Shannessy, D., DiLella, A.G., Debouck, C., Abdel-Meguid, S.S.

(1997) Biochemistry 36: 14023-14029

• PubMed: 9369473 
• DOI: 10.1021/bi9712697


• PubMed Abstract: 
  

Human herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2) are responsible for herpes labialis (cold sores) and genital herpes, respectively. They encode a serine protease that is required for viral replication, and represent a viable target for therapeutic intervention. Here, we report the crystal structures of HSV-1 and HSV-2 proteases, the latter in the presence and absence of the covalently bound transition state analog inhibitor diisopropyl phosphate (DIP). The HSV-1 and HSV-2 protease structures show a fold that is neither like chymotrypsin nor like subtilisin, and has been seen only in the recently determined cytomegalovirus (CMV) and varicella-zoster virus (VZV) protease structures. HSV-1 and HSV-2 proteases share high sequence homology and have almost identical three-dimensional structures. However, structural differences are observed with the less homologous CMV protease, offering a structural basis for herpes virus protease ligand specificity. The bound inhibitor identifies the oxyanion hole of these enzymes and defines the active site cavity.

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Organizational Affiliation: 

Department of Macromolecular Sciences, SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HERPES SIMPLEX VIRUS TYPE II PROTEASE	A, B	247	Human herpesvirus 2	Mutation(s): 0  Gene Names: UL26
Find proteins for Q69527 (Human herpesvirus 2) Go to UniProtKB:  Q69527

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
DFP	A, B	DIISOPROPYL PHOSPHONATE C6 H15 O3 P BLKXLEPPVDUHBY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.291 
• R-Value Work: 0.205 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 71.720	α = 90.00
b = 87.430	β = 90.00
c = 77.280	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	phasing
XDS	data scaling
X-PLOR	refinement
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-08-16 
• Released Date: 1998-10-14 
• Deposition Author(s): Hoog, S., Smith, W.W., Qiu, X., Abdel-Meguid, S.S.

Revision History 

• Version 1.0: 1998-10-14
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance
• Version 1.3: 2018-03-07
  Type: Data collection, Other