1pdr: Difference between revisions

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==Overview==
==Overview==
PDZ domains (also known as DHR domains or GLGF repeats) are approximately, 90-residue repeats found in a number of proteins implicated in ion-channel, and receptor clustering, and the linking of receptors to effector enzymes., PDZ domains are protein-recognition modules; some recognize proteins, containing the consensus carboxy-terminal tripeptide motif S/TXV with high, specificity. Other PDZ domains form homotypic dimers: the PDZ domain of, the neuronal enzyme nitric oxide synthase binds to the PDZ domain of, PSD-95, an interaction that has been implicated in its synaptic, association. Here we report the crystal structure of the third PDZ domain, of the human homologue of the Drosophila discs-large tumour-suppressor, gene product, DlgA. It consists of a five-stranded antiparallel, beta-barrel flanked by three alpha-helices. A groove runs over the surface, of the domain, ending in a conserved hydrophobic pocket and a buried, arginine; we suggest that this is the binding site for the C-terminal, peptide.
PDZ domains (also known as DHR domains or GLGF repeats) are approximately 90-residue repeats found in a number of proteins implicated in ion-channel and receptor clustering, and the linking of receptors to effector enzymes. PDZ domains are protein-recognition modules; some recognize proteins containing the consensus carboxy-terminal tripeptide motif S/TXV with high specificity. Other PDZ domains form homotypic dimers: the PDZ domain of the neuronal enzyme nitric oxide synthase binds to the PDZ domain of PSD-95, an interaction that has been implicated in its synaptic association. Here we report the crystal structure of the third PDZ domain of the human homologue of the Drosophila discs-large tumour-suppressor gene product, DlgA. It consists of a five-stranded antiparallel beta-barrel flanked by three alpha-helices. A groove runs over the surface of the domain, ending in a conserved hydrophobic pocket and a buried arginine; we suggest that this is the binding site for the C-terminal peptide.


==About this Structure==
==About this Structure==
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Cabral, J.M.]]
[[Category: Cabral, J M.]]
[[Category: Liddington, R.]]
[[Category: Liddington, R.]]
[[Category: repeat]]
[[Category: repeat]]
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[[Category: signal transduction]]
[[Category: signal transduction]]


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