3L4A

Crystal Structure of an Anopheles gambiae Odorant-binding Protein 22a

• PDB DOI: https://doi.org/10.2210/pdb3L4A/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Anopheles gambiae str. PEST
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2009-12-18 Released: 2011-01-12 
• Deposition Author(s): Ren, H., Zhang, S.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.207 
• R-Value Work: 0.177 
• R-Value Observed: 0.179 

Starting Model: experimental

Literature

The Crystal Structure of an Anopheles gambiae Odorant-binding Protein AgamOBP22a and complexes with Bound Odorants

Ren, H., Yang, G., Winberg, G., Turin, L., Mershin, A., Zhang, S.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.28 kDa 
• Atom Count: 1,173 
• Modelled Residue Count: 121 
• Deposited Residue Count: 141 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Odorant binding protein (AGAP010409-PA)	A	141	Anopheles gambiae str. PEST	Mutation(s): 0  Gene Names: AgamOBP22a, AGAP010409, OBP22, OBPjj83b
UniProt
Find proteins for Q7PGA3 (Anopheles gambiae) Explore Q7PGA3  Go to UniProtKB:  Q7PGA3

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	B [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
NH4	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A]	AMMONIUM ION H4 N QGZKDVFQNNGYKY-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.207 
• R-Value Work: 0.177 
• R-Value Observed: 0.179 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.194	α = 90
b = 37.729	β = 99.29
c = 43.703	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-01-12 
Deposition Author(s): Ren, H., Zhang, S.

Revision History  

• Version 1.0: 2011-01-12
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2011-11-16
  Changes: Atomic model
• Version 1.3: 2017-11-01
  Changes: Refinement description
• Version 1.4: 2018-03-07
  Changes: Data collection
• Version 1.5: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.6: 2024-11-06
  Changes: Structure summary