2ea1

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[[Image:2ea1.jpg|left|200px]]
[[Image:2ea1.jpg|left|200px]]
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{{Structure
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|PDB= 2ea1 |SIZE=350|CAPTION= <scene name='initialview01'>2ea1</scene>, resolution 1.80&Aring;
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The line below this paragraph, containing "STRUCTURE_2ea1", creates the "Structure Box" on the page.
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|SITE=
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|LIGAND= <scene name='pdbligand=GPG:GUANYLYL-2&#39;,5&#39;-PHOSPHOGUANOSINE'>GPG</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Enterobacter_ribonuclease Enterobacter ribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.6 3.1.27.6] </span>
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{{STRUCTURE_2ea1| PDB=2ea1 | SCENE= }}
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ea1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ea1 OCA], [http://www.ebi.ac.uk/pdbsum/2ea1 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2ea1 RCSB]</span>
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'''Crystal structure of Ribonuclease I from Escherichia coli COMPLEXED WITH GUANYLYL-2(PRIME),5(PRIME)-GUANOSINE'''
'''Crystal structure of Ribonuclease I from Escherichia coli COMPLEXED WITH GUANYLYL-2(PRIME),5(PRIME)-GUANOSINE'''
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[[Category: Pan, J.]]
[[Category: Pan, J.]]
[[Category: Zhou, K.]]
[[Category: Zhou, K.]]
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[[Category: hydrolase]]
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[[Category: Hydrolase]]
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[[Category: protein-gpg complex]]
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[[Category: Protein-gpg complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 02:13:31 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:45:58 2008''
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Revision as of 23:13, 3 May 2008

Image:2ea1.jpg

Template:STRUCTURE 2ea1

Crystal structure of Ribonuclease I from Escherichia coli COMPLEXED WITH GUANYLYL-2(PRIME),5(PRIME)-GUANOSINE


Overview

We have constructed a strain that overproduces ribonuclease I of Escherichia coli and we have purified large quantities of the enzyme. Data from fluorescence, CD, and DSC measurements showed that it was a very stable protein. The conformation energy determined from urea and guanidine hydrochloride denaturation experiments was 11.5 kcal mol(-1) at pH 7.5. Thermal denaturation studies indicated that it had a T(m) of 64 degrees C at pH 4.0. RNase I belongs to the RNase T2/S-RNase group of endoribonucleases, but near the amino terminus it has an unusually long hydrophilic segment. Part of this was removed in the deletion construct, RNase I Delta(26-38). We have obtained crystals of both RNase I and of an enzyme-G2'p5'G complex in the P2(1) space group and oligonucleotide complexes with both wild type and mutant enzymes. The current study lays the groundwork for extensive investigation into the structure, function, and physical properties of this widely distributed group of ribonucleases.

About this Structure

2EA1 is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Overexpression, biophysical characterization, and crystallization of ribonuclease I from Escherichia coli, a broad-specificity enzyme in the RNase T2 family., Padmanabhan S, Zhou K, Chu CY, Lim RW, Lim LW, Arch Biochem Biophys. 2001 Jun 1;390(1):42-50. PMID:11368513 Page seeded by OCA on Sun May 4 02:13:31 2008

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