2id8

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[[Image:2id8.gif|left|200px]]
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{{STRUCTURE_2id8| PDB=2id8 | SCENE= }}
{{STRUCTURE_2id8| PDB=2id8 | SCENE= }}
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'''Crystal structure of Proteinase K'''
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===Crystal structure of Proteinase K===
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==Overview==
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X-ray single-wavelength anomalous diffraction (SAD) data from a crystal of proteinase K were collected using synchrotron radiation of 0.98 A wavelength at SER-CAT 22-ID beamline, Advanced Photon Source, Argonne National Laboratory. At this wavelength, the expected Bijvoet ratio resulting from the presence of one calcium, one chloride and ten S atoms in the 279-residue protein is extremely small at approximately 0.46%. The direct-methods program SHELXD located 11 anomalous sites using data truncated to 2 A resolution. SHELXE was used to produce an easily interpretable electron-density map. This study shows that an accurate beamline and a good-quality crystal provide the possibility of successfully using a very weak anomalous signal of sulfur measured at a short wavelength for phasing a protein structure, even if a small degree of radiation damage is present.
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(as it appears on PubMed at http://www.pubmed.gov), where 17139083 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17139083}}
==About this Structure==
==About this Structure==
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[[Category: Wang, J.]]
[[Category: Wang, J.]]
[[Category: Proteinase]]
[[Category: Proteinase]]
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Revision as of 01:40, 29 July 2008

Template:STRUCTURE 2id8

Crystal structure of Proteinase K

Template:ABSTRACT PUBMED 17139083

About this Structure

2ID8 is a Single protein structure of sequence from Engyodontium album. Full crystallographic information is available from OCA.

Reference

What can be done with a good crystal and an accurate beamline?, Wang J, Dauter M, Dauter Z, Acta Crystallogr D Biol Crystallogr. 2006 Dec;62(Pt 12):1475-83. Epub 2006, Nov 23. PMID:17139083

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