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- PDB-1er8: THE ACTIVE SITE OF ASPARTIC PROTEINASES -

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Basic information

Entry
Database: PDB / ID: 1er8
TitleTHE ACTIVE SITE OF ASPARTIC PROTEINASES
Components
  • Endothiapepsin
  • H-77
KeywordsHYDROLASE / ACID PROTEINASE
Function / homology
Function and homology information


vasoconstriction / endothiapepsin / aspartic-type endopeptidase activity / proteolysis / extracellular region
Similarity search - Function
Aspergillopepsin-like catalytic domain / Eukaryotic aspartyl protease / Aspartic peptidase A1 family / Peptidase family A1 domain / Peptidase family A1 domain profile. / Cathepsin D, subunit A; domain 1 / Acid Proteases / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Aspartic peptidase domain superfamily ...Aspergillopepsin-like catalytic domain / Eukaryotic aspartyl protease / Aspartic peptidase A1 family / Peptidase family A1 domain / Peptidase family A1 domain profile. / Cathepsin D, subunit A; domain 1 / Acid Proteases / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Aspartic peptidase domain superfamily / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
Angiotensinogen / Endothiapepsin
Similarity search - Component
Biological speciesCryphonectria parasitica (chestnut blight fungus)
MethodX-RAY DIFFRACTION / Resolution: 2 Å
AuthorsHemmings, A.M. / Veerapandian, B. / Szelke, M. / Cooper, J.B. / Blundell, T.L.
Citation
Journal: FEBS Lett. / Year: 1984
Title: The Active Site of Aspartic Proteinases
Authors: Pearl, L. / Blundell, T.
#1: Journal: Proc.FEBS Meet. / Year: 1979
Title: Active Site of Acid Proteinases
Authors: Blundell, T.L. / Jones, H.B. / Khan, G. / Taylor, G. / Sewell, T.S. / Pearl, L.H. / Wood, S.P.
#2: Journal: Proc.FEBS Meet. / Year: 1979
Title: The Three-Dimensional Structure of Acid Proteinases
Authors: Blundell, T.L. / Jenkins, J.A. / Khan, G. / Roychowdhury, P. / Sewell, T. / Tickle, I.J. / Wood, E.A.
#3: Journal: Biochim.Biophys.Acta / Year: 1979
Title: Four-Fold Structural Repeat in the Acid Proteases
Authors: Blundell, T.L. / Sewell, B.T. / Mclachlan, A.D.
#4: Journal: Nature / Year: 1978
Title: Structural Evidence for Gene Duplication in the Evolution of Acid Proteases
Authors: Tang, J. / James, M.N.G. / Hsu, I.N. / Jenkins, J.A. / Blundell, T.L.
#5: Journal: Proc.Natl.Acad.Sci.USA / Year: 1977
Title: Homology Among Acid Proteases. Comparison of Crystal Structures at 3 Angstroms Resolution of Acid Proteases from Rhizopus Chinensis and Endothia Parasitica
Authors: Subramanian, E. / Swan, I.D.A. / Liu, M. / Davies, D.R. / Jenkins, J.A. / Tickle, I.J. / Blundell, T.L.
#6: Journal: Adv.Exp.Med.Biol. / Year: 1977
Title: X-Ray Analysis and Circular Dichroism of the Acid Protease from Endothia Parasitica and Chymosin
Authors: Jenkins, J. / Tickle, I. / Sewell, T. / Ungaretti, L. / Wollmer, A. / Blundell, T.
History
DepositionOct 16, 1989Processing site: BNL
Revision 1.0Oct 15, 1991Provider: repository / Type: Initial release
Revision 1.1Mar 3, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 29, 2017Group: Derived calculations / Other
Category: pdbx_database_status / struct_conf / struct_conf_type
Item: _pdbx_database_status.process_site

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
E: Endothiapepsin
I: H-77


Theoretical massNumber of molelcules
Total (without water)34,8412
Polymers34,8412
Non-polymers00
Water1,20767
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1530 Å2
ΔGint-13 kcal/mol
Surface area12950 Å2
MethodPISA
Unit cell
Length a, b, c (Å)43.200, 75.700, 42.900
Angle α, β, γ (deg.)90.00, 97.10, 90.00
Int Tables number4
Space group name H-MP1211
Atom site foot note1: RESIDUES PRO E 23 AND PRO E 133 ARE CIS PROLINES. / 2: RESIDUE HIS I 1 IS THE D ENANTIOMER.
3: THE PEPTIDE BOND BETWEEN RESIDUE LEU I 5 AND RESIDUE LEU I 6 HAS BEEN REDUCED TO CH2-NH2.

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Components

#1: Protein Endothiapepsin / / Aspartate protease


Mass: 33813.855 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Cryphonectria parasitica (chestnut blight fungus)
Gene: EAPA, EPN-1 / References: UniProt: P11838, endothiapepsin
#2: Protein/peptide H-77


Mass: 1027.218 Da / Num. of mol.: 1 / Source method: obtained synthetically / References: UniProt: P01016*PLUS
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 67 / Source method: isolated from a natural source / Formula: H2O
Nonpolymer detailsTHE PEPTIDE BOND BETWEEN RESIDUE LEU I 5 AND RESIDUE LEU I 6 HAS BEEN REDUCED TO CH2-NH2.
Sequence detailsTHE COMPLETE SEQUENCE WAS DETERMINED BY V. PEDERSEN AS TRYPTIC FRAGMENTS WHICH WERE ALIGNED IN THE ...THE COMPLETE SEQUENCE WAS DETERMINED BY V. PEDERSEN AS TRYPTIC FRAGMENTS WHICH WERE ALIGNED IN THE ELECTRON DENSITY. HOMOLOGY WITH OTHER ASPARTIC PROTEINASES WAS USED TO RESOLVE ALIGNMENT AMBIGUITIES. THE RESIDUE NUMBERING IS BASED ON THAT OF PORCINE PEPSIN.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2 Å3/Da / Density % sol: 38.41 %

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Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1

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Processing

RefinementResolution: 2→20 Å / Rfactor Rwork: 0.17
Details: THE QUANTITY GIVEN IN THE TEMPERATURE FACTOR FIELD OF THE *ATOM* AND *HETATM* RECORDS BELOW IS U**2, WHICH IS THE MEAN-SQUARE AMPLITUDE OF ATOMIC VIBRATION. THE TEMPERATURE FACTOR, B, CAN BE ...Details: THE QUANTITY GIVEN IN THE TEMPERATURE FACTOR FIELD OF THE *ATOM* AND *HETATM* RECORDS BELOW IS U**2, WHICH IS THE MEAN-SQUARE AMPLITUDE OF ATOMIC VIBRATION. THE TEMPERATURE FACTOR, B, CAN BE DERIVED BY THE FOLLOWING RELATION - B = 8 * (PI)**2 * U**2.
Refinement stepCycle: LAST / Resolution: 2→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2462 0 0 67 2529
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONo_bond_d0.019
X-RAY DIFFRACTIONo_angle_d0.037
X-RAY DIFFRACTIONo_improper_angle_d0.008

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