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J Cell Biol. 2002 Oct 28;159(2):373-82. Epub 2002 Oct 21.

Crystal structure of the TSP-1 type 1 repeats: a novel layered fold and its biological implication.

Author information

1
Dana-Farber Cancer Institute, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA.

Abstract

Thrombospondin-1 (TSP-1) contains three type 1 repeats (TSRs), which mediate cell attachment, glycosaminoglycan binding, inhibition of angiogenesis, activation of TGFbeta, and inhibition of matrix metalloproteinases. The crystal structure of the TSRs reported in this article reveals a novel, antiparallel, three-stranded fold that consists of alternating stacked layers of tryptophan and arginine residues from respective strands, capped by disulfide bonds on each end. The front face of the TSR contains a right-handed spiral, positively charged groove that might be the "recognition" face, mediating interactions with various ligands. This is the first high-resolution crystal structure of a TSR domain that provides a prototypic architecture for structural and functional exploration of the diverse members of the TSR superfamily.

PMID:
12391027
PMCID:
PMC2173040
DOI:
10.1083/jcb.200206062
[Indexed for MEDLINE]
Free PMC Article

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