4ISO Hydrolase Hydrolase Inhibitor date Jan 16, 2013
title Crystal Structure Of Matriptase In Complex With Its Inhibito
authors M.D.Huang, B.Y.Zhao, C.Yuan, R.Li
compound source
Molecule: Suppressor Of Tumorigenicity 14 Protein
Chain: A
Fragment: Serine Protease Domain (Unp Residues 615-855)
Synonym: Matriptase, Membrane-Type Serine Protease 1, Mt-Sp Prostamin, Serine Protease 14, Serine Protease Tadg-15, Tum Associated Differentially-Expressed Gene 15 Protein;
Engineered: Yes
Mutation: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Prss14, Snc19, St14, Tadg15
Expression_system: Komagataella Pastoris
Expression_system_common: Pichia Pastoris
Expression_system_taxid: 4922
Expression_system_strain: X-33
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Ppiczalphaa

Molecule: Kunitz-Type Protease Inhibitor 1
Chain: B
Fragment: Kunitz Domain I (Unp Resisdues 245-304)
Synonym: Hepatocyte Growth Factor Activator Inhibitor Type
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Hai1, Spint1, Unq223pro256
Expression_system: Drosophila Melanogaster
Expression_system_taxid: 7227
Expression_system_strain: S2
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pmtbipv5-His-A
symmetry Space Group: P 43 21 2
R_factor 0.177 R_Free 0.219
length a length b length c angle alpha angle beta angle gamma
61.372 61.372 178.355 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.01 Å
ligand GOL, GSH, PEG, PGE enzyme Hydrolase E.C. BRENDA


Primary referenceCrystal structures of matriptase in complex with its inhibitor hepatocyte growth factor activator inhibitor-1., Zhao B, Yuan C, Li R, Qu D, Huang M, Ngo JC, J Biol Chem. 2013 Apr 19;288(16):11155-64. doi: 10.1074/jbc.M113.454611. Epub, 2013 Feb 26. PMID:23443661
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (59 Kb) [Save to disk]
  • Biological Unit Coordinates (4iso.pdb1.gz) 53 Kb
  • LPC: Ligand-Protein Contacts for 4ISO
  • CSU: Contacts of Structural Units for 4ISO
  • Structure Factors (341 Kb)
  • Retrieve 4ISO in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 4ISO from S2C, [Save to disk]
  • Re-refined 4iso structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 4ISO in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 4ISO
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 4ISO, from MSDmotif at EBI
  • Fold representative 4iso from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [4iso_A] [4iso_B] [4iso]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domains found in 4ISO: [KU] [Tryp_SPc ] by SMART
  • Other resources with information on 4ISO
  • Community annotation for 4ISO at PDBWiki (http://pdbwiki.org)

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