Structure of a fibronectin type III domain from tenascin phased by MAD analysis of the selenomethionyl protein.

Journal Article (Journal Article)

Fibronectin type III domains are found in many different proteins including cell surface receptors and cell adhesion molecules. The crystal structure of one such domain from the extracellular matrix protein tenascin was determined. The structure was solved by multiwavelength anomalous diffraction (MAD) phasing of the selenomethionyl protein and has been refined to 1.8 angstrom resolution. The folding topology of this domain is identical to that of the extracellular domains of the human growth hormone receptor, the second domain of CD4, and PapD. Although distinct, this topology is similar to that of immunoglobulin constant domains. An Arg-Gly-Asp (RGD) sequence that can function for cell adhesion is found in a tight turn on an exposed loop.

Full Text

Duke Authors

Cited Authors

  • Leahy, DJ; Hendrickson, WA; Aukhil, I; Erickson, HP

Published Date

  • November 6, 1992

Published In

Volume / Issue

  • 258 / 5084

Start / End Page

  • 987 - 991

PubMed ID

  • 1279805

International Standard Serial Number (ISSN)

  • 0036-8075

Digital Object Identifier (DOI)

  • 10.1126/science.1279805


  • eng

Conference Location

  • United States