3G7X

Female-specific histamine-binding protein 2, D24R mutant

• PDB DOI: https://doi.org/10.2210/pdb3G7X/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Rhipicephalus appendiculatus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2009-02-11 Released: 2010-02-16 
• Deposition Author(s): Dennis, C.A., Homans, S.W.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.214 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 

Starting Model: experimental

Literature

Entropic contributions to binding in a 'Hydrophilic' Ligand-Protein Interaction

Syme, N.R., Dennis, C.A., Bronowska, A., Paesen, G., Homans, S.W.

To be published.

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 39.55 kDa 
• Atom Count: 3,282 
• Modelled Residue Count: 341 
• Deposited Residue Count: 342 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Female-specific histamine-binding protein 2	A, B	171	Rhipicephalus appendiculatus	Mutation(s): 1
UniProt
Find proteins for O77421 (Rhipicephalus appendiculatus) Explore O77421  Go to UniProtKB:  O77421

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HSM	C [auth A], F [auth B]	HISTAMINE C5 H9 N3 NTYJJOPFIAHURM-UHFFFAOYSA-N
GOL	D [auth A], E [auth A], G [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.214 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.225	α = 90
b = 78.728	β = 90
c = 77.651	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-02-16 
Deposition Author(s): Dennis, C.A., Homans, S.W.

Revision History  

• Version 1.0: 2010-02-16
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2021-10-20
  Changes: Database references, Derived calculations
• Version 1.3: 2023-09-06
  Changes: Data collection, Refinement description
• Version 1.4: 2024-10-30
  Changes: Structure summary