2yd8

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Crystal structure of the N-terminal Ig1-2 module of Human Receptor Protein Tyrosine Phosphatase LAR in complex with sucrose octasulphate

Structural highlights

2yd8 is a 1 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 2.05Å
Ligands:YYJ
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PTPRF_HUMAN Possible cell adhesion receptor. It possesses an intrinsic protein tyrosine phosphatase activity (PTPase).[1] The first PTPase domain has enzymatic activity, while the second one seems to affect the substrate specificity of the first one.[2]

Publication Abstract from PubMed

Heparan and chondroitin sulfate proteoglycans (HSPGs and CSPGs) regulate numerous cell surface signaling events, with typically opposite effects on cell function. CSPGs inhibit nerve regeneration through receptor protein tyrosine phosphatase sigma (RPTPsigma). Here, we report that RPTPsigma acts bimodally in sensory neuron extension, mediating CSPG inhibition and HSPG growth promotion. Crystallographic analyses of a shared HSPG-CSPG binding site reveal a conformational plasticity that can accommodate diverse glycosaminoglycans with comparable affinities. Heparan sulfate and analogues induced RPTPsigma ectodomain oligomerization in solution, which chondroitin sulfate inhibited. RPTPsigma and HSPGs colocalize in puncta on sensory neurons in culture, whereas CSPGs occupy the extracellular matrix. These results lead to a model where proteoglycans can exert opposing effects on neuronal extension by competing to control the oligomerization of a common receptor.

Proteoglycan-Specific Molecular Switch for RPTP{sigma} Clustering and Neuronal Extension.,Coles CH, Shen Y, Tenney AP, Siebold C, Sutton GC, Lu W, Gallagher JT, Jones EY, Flanagan JG, Aricescu AR Science. 2011 Mar 31. PMID:21454754[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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Citations
73 reviews cite this structure
Demystifying heparan sulfate-protein interactions.
Xu et al. (2014)
72 more
124 other articles
No citations found

See Also

References

  1. ↑ Nam HJ, Poy F, Krueger NX, Saito H, Frederick CA. Crystal structure of the tandem phosphatase domains of RPTP LAR. Cell. 1999 May 14;97(4):449-57. PMID:10338209
  2. ↑ Nam HJ, Poy F, Krueger NX, Saito H, Frederick CA. Crystal structure of the tandem phosphatase domains of RPTP LAR. Cell. 1999 May 14;97(4):449-57. PMID:10338209
  3. ↑ Coles CH, Shen Y, Tenney AP, Siebold C, Sutton GC, Lu W, Gallagher JT, Jones EY, Flanagan JG, Aricescu AR. Proteoglycan-Specific Molecular Switch for RPTP{sigma} Clustering and Neuronal Extension. Science. 2011 Mar 31. PMID:21454754 doi:10.1126/science.1200840

Contents


PDB ID 2yd8

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OCA

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