HYR, an extracellular module involved in cellular adhesion and related to the immunoglobulin-like fold.
Domains belonging to the immunoglobulin-like fold are responsible for a wide variety of molecular recognition processes. Here we describe a new family of domains, the HYR family, which is predicted to belong to this fold, and which appears to be involved in cellular adhesion. HYR domains were identified in several eukaryotic proteins, often associated with Complement Control Protein (CCP) modules or arranged in multiple copies. Our analysis provides a sequence and structural basis for understanding the role of these domains in interaction mechanisms and leads to further characterization of heretofore undescribed repeated domains with similar folds found in several bacterial proteins involved in enzymatic activities (some chitinases) or in cell surface adhesion (streptococcal C-alpha antigen).
Systèmes Moléculaires & Biologie Structurale, LMCP, CNRS UMR 7590, Université Paris 6, France. callebau@lmcp.jussieu.fr
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I
Callebaut
D
D
Gilgès
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I
Vigon
J P
JP
Mornon
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry; D002448:Cell Adhesion / Q000502:physiology*; D016326:Extracellular Matrix Proteins / Q000737:chemistry* / Q000378:metabolism; D005353:Fibronectins / Q000737:chemistry; D006818:Hyalin / Q000737:chemistry*; D007136:Immunoglobulins / Q000737:chemistry; D008969:Molecular Sequence Data; D017510:Protein Folding; D011506:Proteins / Q000737:chemistry; D020449:Repetitive Sequences, Amino Acid; D017386:Sequence Homology, Amino Acid; D050396:TRPP Cation Channels
D001426:Bacterial Proteins; D016326:Extracellular Matrix Proteins; D005353:Fibronectins; D007136:Immunoglobulins; D011506:Proteins; D050396:TRPP Cation Channels