3N95

Crystal structure of human CRFR2 alpha extracellular domain in complex with Urocortin 2

• PDB DOI: https://doi.org/10.2210/pdb3N95/pdb

• Classification: Membrane protein, Hormone
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2010-05-28 Released: 2010-10-20 
• Deposition Author(s): Pal, K., Swaminathan, K., Pioszak, A.A., Xu, H.E.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.72 Å
• R-Value Free: 0.266 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 

Starting Model: experimental

Literature

Structural basis of ligand selectivity in human CRFR1 and CRFR2 alpha extracellular domain

Pal, K., Swaminathan, K., Pioszak, A.A., Xu, H.E.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 6-mer - A4B2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A4B1C1 

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 2 generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 3 generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors.

Biological Assembly 5  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 5 assigned by authors.

Biological Assembly 6  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 6 assigned by authors.

Biological Assembly 7  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 7 assigned by authors.

Biological Assembly 8  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 8 assigned by authors.

Biological Assembly 9  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 9 assigned by authors.

Macromolecule Content

• Total Structure Weight: 217.44 kDa 
• Atom Count: 15,086 
• Modelled Residue Count: 1,901 
• Deposited Residue Count: 1,962 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltose binding protein-CRFR2 alpha extracellular domain	A, B, C, D	482	Homo sapiens	Mutation(s): 0  Gene Names: Human CRFR2 alpha
UniProt & NIH Common Fund Data Resources
Find proteins for Q13324 (Homo sapiens) Explore Q13324  Go to UniProtKB:  Q13324
PHAROS:  Q13324 GTEx:  ENSG00000106113
Find proteins for P0AEX9 (Escherichia coli (strain K12)) Explore P0AEX9  Go to UniProtKB:  P0AEX9
UniProt Groups	Q13324P0AEX9

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Urocortin-2	E, F	17	N/A	Mutation(s): 1
UniProt & NIH Common Fund Data Resources
Find proteins for Q96RP3 (Homo sapiens) Explore Q96RP3  Go to UniProtKB:  Q96RP3
PHAROS:  Q96RP3 GTEx:  ENSG00000145040

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	G, H, I, J	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 3
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900001	G, H, I, J	alpha-maltose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.72 Å
• R-Value Free: 0.266 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.311	α = 90
b = 212.068	β = 104.54
c = 107.319	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASES	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-10-20 
Deposition Author(s): Pal, K., Swaminathan, K., Pioszak, A.A., Xu, H.E.

Revision History  

• Version 1.0: 2010-10-20
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2023-09-06
  Changes: Data collection, Database references, Refinement description, Structure summary