1QFT

HISTAMINE BINDING PROTEIN FROM FEMALE BROWN EAR RHIPICEPHALUS APPENDICULATUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Tick histamine-binding proteins: isolation, cloning, and three-dimensional structure.

Paesen, G.C.Adams, P.L.Harlos, K.Nuttall, P.A.Stuart, D.I.

(1999) Mol Cell 3: 661-671

  • DOI: 10.1016/s1097-2765(00)80359-7
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • High-affinity histamine-binding proteins (HBPs) were discovered in the saliva of Rhipicephalus appendiculatus ticks. Their ability to outcompete histamine receptors indicates that they suppress inflammation during blood feeding. The crystal structure ...

    High-affinity histamine-binding proteins (HBPs) were discovered in the saliva of Rhipicephalus appendiculatus ticks. Their ability to outcompete histamine receptors indicates that they suppress inflammation during blood feeding. The crystal structure of a histamine-bound HBP, determined at 1.25 A resolution, reveals a lipocalin fold novel in containing two binding sites for the same ligand. The sites are orthogonally arranged and highly rigid and form an internal surface of unusual polar character that complements the physicochemical properties of histamine. As soluble receptors of histamine, HBPs offer a new strategy for controlling histamine-based diseases.


    Organizational Affiliation

    Natural Environment Research Council, Institute of Virology and Environmental Microbiology, Oxford, United Kingdom. gcp@mail.nerc-oxford.ac.uk



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (FEMALE-SPECIFIC HISTAMINE BINDING PROTEIN 2)A, B175Rhipicephalus appendiculatusMutation(s): 0 
Find proteins for O77421 (Rhipicephalus appendiculatus)
Explore O77421 
Go to UniProtKB:  O77421
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HSM
Query on HSM

Download CCD File 
A, B
HISTAMINE
C5 H9 N3
NTYJJOPFIAHURM-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
HSMKd:  1.7000000476837158   nM  Binding MOAD
HSMKd :  1.7000000476837158   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Work: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.42α = 90
b = 74.79β = 90
c = 78.52γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-04-19
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance