1Q8M

Crystal structure of the human myeloid cell activating receptor TREM-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.201 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the human myeloid cell activating receptor TREM-1

Radaev, S.Kattah, M.Rostro, B.Colonna, M.Sun, P.D.

(2003) Structure 11: 1527-1535

  • DOI: 10.1016/j.str.2003.11.001
  • Primary Citation of Related Structures:  
    1Q8M

  • PubMed Abstract: 
  • Triggering receptors expressed on myeloid cells (TREM) are a family of recently discovered receptors that play important roles in innate immune responses, such as to activate inflammatory responses and to contribute to septic shock in response to microbial-mediated infections ...

    Triggering receptors expressed on myeloid cells (TREM) are a family of recently discovered receptors that play important roles in innate immune responses, such as to activate inflammatory responses and to contribute to septic shock in response to microbial-mediated infections. To date, two TREM receptors in human and several homologs in mice have been identified. We report the 2.6 A resolution crystal structure of the extracellular domain of human TREM-1. The overall fold of the receptor resembles that of a V-type immunoglobulin domain with differences primarily located in the N-terminal strand. TREM-1 forms a "head-to-tail" dimer with 4100 A(2) interface area that is partially mediated by a domain swapping between the first strands. This mode of dimer formation is different from the "head-to-head" dimerization that existed in V(H)V(L) domains of antibodies or V domains of T cell receptors. As a result, the dimeric TREM-1 most likely contains two distinct ligand binding sites.


    Organizational Affiliation

    Structural Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 12441 Parklawn Drive, Rockville, MD 20852, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
triggering receptor expressed on myeloid cells 1A, B, C, D127Homo sapiensMutation(s): 0 
Gene Names: TREM1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NP99 (Homo sapiens)
Explore Q9NP99 
Go to UniProtKB:  Q9NP99
PHAROS:  Q9NP99
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.201 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.315α = 90
b = 128.595β = 101.69
c = 62.389γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
SOLVEphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-12-09
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance