5mx1

Crystal structure of human chondroadherin

spinqualitylabelsall models 5mx1, resolution 2.17Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5mx1 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.17Å Ligands: CL, NI, PO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CHAD_HUMAN Promotes attachment of chondrocytes, fibroblasts, and osteoblasts. This binding is mediated (at least for chondrocytes and fibroblasts) by the integrin alpha(2)beta(1). May play an important role in the regulation of chondrocyte growth and proliferation (By similarity). Publication Abstract from PubMed The small leucine-rich proteoglycans (SLRPs) are important regulators of extracellular matrix assembly and cell signalling. We have determined crystal structures at ~2.2A resolution of human fibromodulin and chondroadherin, two collagen-binding SLRPs. Their overall fold is similar to that of the prototypical SLRP, decorin, but unlike decorin neither fibromodulin nor chondroadherin forms a stable dimer. A previously identified binding site for integrin alpha2beta1 maps to an alpha-helix in the C-terminal cap region of chondroadherin. Interrogation of the Collagen Toolkits revealed a unique binding site for chondroadherin in collagen II, and no binding to collagen III. A triple-helical peptide containing the sequence GAOGPSGFQGLOGPOGPO (O is hydroxyproline) forms a stable complex with chondroadherin in solution. In fibrillar collagen I and II, this sequence is aligned with the collagen cross-linking site KGHR, suggesting a role for chondroadherin in cross-linking. Structural and functional analysis of two small leucine-rich repeat proteoglycans, fibromodulin and chondroadherin.,Paracuellos P, Kalamajski S, Bonna A, Bihan D, Farndale RW, Hohenester E Matrix Biol. 2017 Feb 17. pii: S0945-053X(17)30015-X. doi:, 10.1016/j.matbio.2017.02.002. PMID:28215822 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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