Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 55.60 kDa 
• Atom Count: 4185 
• Modelled Residue Count: 488 
• Deposited Residue Count: 495 
• Unique protein chains: 2

3M3Z

Crystal structure of HSC70/BAG1 in complex with small molecule inhibitor

• DOI: 10.2210/pdb3M3Z/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-03-10 Released: 2011-01-26 
• Deposition Author(s): Dokurno, P., Surgenor, A.E., Shaw, T., Macias, A.T., Massey, A.J., Williamson, D.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.293 
• R-Value Work: 0.198 
• R-Value Observed: 0.205 

Literature

Adenosine-Derived Inhibitors of 78 kDa Glucose Regulated Protein (Grp78) ATPase: Insights into Isoform Selectivity.

Macias, A.T., Williamson, D.S., Allen, N., Borgognoni, J., Clay, A., Daniels, Z., Dokurno, P., Drysdale, M.J., Francis, G.L., Graham, C.J., Howes, R., Matassova, N., Murray, J.B., Parsons, R., Shaw, T., Surgenor, A.E., Terry, L., Wang, Y., Wood, M., Massey, A.J.

(2011) J Med Chem 54: 4034-4041

• PubMed: 21526763 
• DOI: 10.1021/jm101625x
• Primary Citation of Related Structures:  
  3LDL, 3LDN, 3LDO, 3LDP, 3LDQ, 3M3Z


• PubMed Abstract: 
  

78 kDa glucose-regulated protein (Grp78) is a heat shock protein (HSP) involved in protein folding that plays a role in cancer cell proliferation. Binding of adenosine-derived inhibitors to Grp78 was characterized by surface plasmon resonance and isothermal titration calorimetry. The most potent compounds were 13 (VER-155008) with K(D) = 80 nM and 14 with K(D) = 60 nM. X-ray crystal structures of Grp78 bound to ATP, ADPnP, and adenosine derivative 10 revealed differences in the binding site between Grp78 and homologous proteins.

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Organizational Affiliation: 

Vernalis (R&D) Ltd., Granta Park, Great Abington, Cambridge, CB21 6GB, UK. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Heat shock cognate 71 kDa protein	A	381	Homo sapiens	Mutation(s): 0  Gene Names: HSPA8, HSC70, HSP73, HSPA10
Find proteins for P11142 (Homo sapiens) Explore P11142  Go to UniProtKB:  P11142
NIH Common Fund Data Resources
PHAROS:  P11142 GTEx:  ENSG00000109971

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
BAG family molecular chaperone regulator 1	B	114	Homo sapiens	Mutation(s): 0  Gene Names: BAG1, HAP
Find proteins for Q99933 (Homo sapiens) Explore Q99933  Go to UniProtKB:  Q99933
NIH Common Fund Data Resources
PHAROS:  Q99933 GTEx:  ENSG00000107262

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
3F5	C [auth A]	5'-O-(2-amino-2-oxoethyl)-8-(methylamino)adenosine C13 H19 N7 O5 YTEPWBADDXGTBX-JJNLEZRASA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
3F5	Ki:  1850   nM  BindingDB
3F5	Kd:  12360   nM  Binding MOAD
3F5	Ki :  1850   nM  PDBBind

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.293 
• R-Value Work: 0.198 
• R-Value Observed: 0.205 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.776	α = 90
b = 120.969	β = 106.78
c = 53.537	γ = 90

Software Package:

Software Name	Purpose
CrystalClear	data collection
MOLREP	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-03-10 
• Released Date: 2011-01-26 
Deposition Author(s): Dokurno, P., Surgenor, A.E., Shaw, T., Macias, A.T., Massey, A.J., Williamson, D.S.

Revision History  

• Version 1.0: 2011-01-26
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance