1P57

Extracellular domain of human hepsin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The Structure of the Extracellular Region of Human Hepsin Reveals a Serine Protease Domain and a Novel Scavenger Receptor Cysteine-Rich (SRCR) Domain

Somoza, J.R.Ho, J.D.Luong, C.Ghate, M.Sprengeler, P.A.Mortara, K.Shrader, W.D.Sperandio, D.Chan, H.McGrath, M.E.Katz, B.A.

(2003) Structure 11: 1123-1131


  • PubMed Abstract: 
  • Hepsin is an integral membrane protein that may participate in cell growth and in maintaining proper cell morphology and is overexpressed in a number of primary tumors. We have determined the 1.75 A resolution structure of the extracellular component ...

    Hepsin is an integral membrane protein that may participate in cell growth and in maintaining proper cell morphology and is overexpressed in a number of primary tumors. We have determined the 1.75 A resolution structure of the extracellular component of human hepsin. This structure includes a 255-residue trypsin-like serine protease domain and a 109-residue region that forms a novel, poorly conserved, scavenger receptor cysteine-rich (SRCR) domain. The two domains are associated with each other through a single disulfide bond and an extensive network of noncovalent interactions. The structure suggests how the extracellular region of hepsin may be positioned with respect to the plasma membrane.


    Organizational Affiliation

    Celera, Inc., 180 Kimball Road, South San Francisco, CA 94080, USA. john.somoza@celera.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine protease hepsin
A
114Homo sapiensMutation(s): 1 
Gene Names: HPN (TMPRSS1)
EC: 3.4.21.106
Find proteins for P05981 (Homo sapiens)
Go to Gene View: HPN
Go to UniProtKB:  P05981
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Serine protease hepsin
B
255Homo sapiensMutation(s): 0 
Gene Names: HPN (TMPRSS1)
EC: 3.4.21.106
Find proteins for P05981 (Homo sapiens)
Go to Gene View: HPN
Go to UniProtKB:  P05981
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CR4
Query on CR4

Download SDF File 
Download CCD File 
B
2-{5-[AMINO(IMINIO)METHYL]-1H-BENZIMIDAZOL-2-YL}BENZENOLATE
CRA_1144
C14 H12 N4 O
URJKRCBBKTXOHS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
CR4Ki: 40000 nM BINDINGMOAD
CR4Ki: 40000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 58.800α = 90.00
b = 47.800β = 104.80
c = 63.100γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-01-20
    Type: Initial release
  • Version 1.1: 2007-10-21
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2016-07-27
    Type: Derived calculations, Structure summary