2c7o
From Proteopedia
(New page: 200px<br /> <applet load="2c7o" size="450" color="white" frame="true" align="right" spinBox="true" caption="2c7o, resolution 1.90Å" /> '''HHAI DNA METHYLTRAN...) |
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==About this Structure== | ==About this Structure== | ||
| - | 2C7O is a [[http://en.wikipedia.org/wiki/Protein_complex Protein complex]] structure of sequences from [[http://en.wikipedia.org/wiki/Haemophilus_haemolyticus Haemophilus haemolyticus]] with SO4 and SAH as [[http://en.wikipedia.org/wiki/ligands ligands]]. Active as [[http://en.wikipedia.org/wiki/ ]], with EC number [[http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.37 2.1.1.37]]. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2C7O OCA]]. | + | 2C7O is a [[http://en.wikipedia.org/wiki/Protein_complex Protein complex]] structure of sequences from [[http://en.wikipedia.org/wiki/Haemophilus_haemolyticus Haemophilus haemolyticus]] with SO4 and SAH as [[http://en.wikipedia.org/wiki/ligands ligands]]. Active as [[http://en.wikipedia.org/wiki/Transferase Transferase]], with EC number [[http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.37 2.1.1.37]]. Structure known Active Site: AC1. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2C7O OCA]]. |
==Reference== | ==Reference== | ||
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[[Category: transferase]] | [[Category: transferase]] | ||
| - | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Oct 30 08:43:49 2007'' |
Revision as of 06:39, 30 October 2007
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HHAI DNA METHYLTRANSFERASE COMPLEX WITH 13MER OLIGONUCLEOTIDE CONTAINING 2-AMINOPURINE ADJACENT TO THE TARGET BASE (PCGC:GMGC) AND SAH
Overview
DNA base flipping is an important mechanism in molecular enzymology, but, its study is limited by the lack of an accessible and reliable diagnostic, technique. A series of crystalline complexes of a DNA methyltransferase, M.HhaI, and its cognate DNA, in which a fluorescent nucleobase analogue, 2-aminopurine (AP), occupies defined positions with respect the target, flipped base, have been prepared and their structures determined at higher, than 2 A resolution. From time-resolved fluorescence measurements of these, single crystals, we have established that the fluorescence decay function, of AP shows a pronounced, characteristic response to base flipping: the, loss of the very short (approximately 100 ps) decay component and the, large increase in the amplitude of the long (approximately 10 ... [(full description)]
About this Structure
2C7O is a [Protein complex] structure of sequences from [Haemophilus haemolyticus] with SO4 and SAH as [ligands]. Active as [Transferase], with EC number [2.1.1.37]. Structure known Active Site: AC1. Full crystallographic information is available from [OCA].
Reference
Time-resolved fluorescence of 2-aminopurine as a probe of base flipping in M.HhaI-DNA complexes., Neely RK, Daujotyte D, Grazulis S, Magennis SW, Dryden DT, Klimasauskas S, Jones AC, Nucleic Acids Res. 2005 Dec 9;33(22):6953-60. Print 2005. PMID:16340006
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