PMID: 14747738

Authors:

Dimasi N, Moretta A, Moretta L, Biassoni R, Mariuzza RA

Title:

Structure of the saccharide-binding domain of the human natural killer cell inhibitory receptor p75/AIRM1.

Journal:

Acta Crystallogr D Biol Crystallogr. 2004 Feb;60(Pt 2):401-3. Epub 2004, Jan 23.

Abstract:

The high-resolution crystal structure of the functional N-terminal domain from the extracellular region of the human natural killer cell inhibitory receptor p75/AIRM1 or Siglec-7 has been determined at 1.45 A resolution; it was obtained from a crystal belonging to a primitive monoclinic space group, with unit-cell parameters a = 32.65, b = 49.72, c = 39.79 A, alpha = gamma = 90, beta = 113 degrees. The structure reported here belongs to a different space group than the previously described Siglec-7 structure and was obtained using a bacterial expression system. The structure unveils the fine structural requirements adopted by a natural killer cell inhibitory receptor of the Siglec family in target-cell recognition and binding.