1sps: Difference between revisions
New page: left|200px<br /><applet load="1sps" size="450" color="white" frame="true" align="right" spinBox="true" caption="1sps, resolution 2.7Å" /> '''BINDING OF A HIGH AFF... |
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[[Image:1sps.gif|left|200px]]<br /><applet load="1sps" size=" | [[Image:1sps.gif|left|200px]]<br /><applet load="1sps" size="350" color="white" frame="true" align="right" spinBox="true" | ||
caption="1sps, resolution 2.7Å" /> | caption="1sps, resolution 2.7Å" /> | ||
'''BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS'''<br /> | '''BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS'''<br /> | ||
==Overview== | ==Overview== | ||
The crystal structure of the Src SH2 domain complexed with a high affinity | The crystal structure of the Src SH2 domain complexed with a high affinity 11-residue phosphopeptide has been determined at 2.7 A resolution by X-ray diffraction. The peptide binds in an extended conformation and makes primary interactions with the SH2 domain at six central residues: PQ(pY)EEI. The phosphotyrosine and the isoleucine are tightly bound by two well-defined pockets on the protein surface, resulting in a complex that resembles a two-pronged plug engaging a two-holed socket. The glutamate residues are in solvent-exposed environments in the vicinity of basic side chains of the SH2 domain, and the two N-terminal residues cap the phosphotyrosine-binding site. The crystal structure of Src SH2 in the absence of peptide has been determined at 2.5 A resolution, and comparison with the structure of the high affinity complex reveals only localized and relatively small changes. | ||
==About this Structure== | ==About this Structure== | ||
1SPS is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Hamster_polyomavirus Hamster polyomavirus] and [http://en.wikipedia.org/wiki/Rous_sarcoma_virus Rous sarcoma virus] with PO3 as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http:// | 1SPS is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Hamster_polyomavirus Hamster polyomavirus] and [http://en.wikipedia.org/wiki/Rous_sarcoma_virus Rous sarcoma virus] with <scene name='pdbligand=PO3:'>PO3</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SPS OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: transferase(phosphotransferase)]] | [[Category: transferase(phosphotransferase)]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:04:00 2008'' | ||
Revision as of 16:04, 21 February 2008
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BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS
OverviewOverview
The crystal structure of the Src SH2 domain complexed with a high affinity 11-residue phosphopeptide has been determined at 2.7 A resolution by X-ray diffraction. The peptide binds in an extended conformation and makes primary interactions with the SH2 domain at six central residues: PQ(pY)EEI. The phosphotyrosine and the isoleucine are tightly bound by two well-defined pockets on the protein surface, resulting in a complex that resembles a two-pronged plug engaging a two-holed socket. The glutamate residues are in solvent-exposed environments in the vicinity of basic side chains of the SH2 domain, and the two N-terminal residues cap the phosphotyrosine-binding site. The crystal structure of Src SH2 in the absence of peptide has been determined at 2.5 A resolution, and comparison with the structure of the high affinity complex reveals only localized and relatively small changes.
About this StructureAbout this Structure
1SPS is a Protein complex structure of sequences from Hamster polyomavirus and Rous sarcoma virus with as ligand. Full crystallographic information is available from OCA.
ReferenceReference
Binding of a high affinity phosphotyrosyl peptide to the Src SH2 domain: crystal structures of the complexed and peptide-free forms., Waksman G, Shoelson SE, Pant N, Cowburn D, Kuriyan J, Cell. 1993 Mar 12;72(5):779-90. PMID:7680960
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