1rca: Difference between revisions
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New page: left|200px<br /><applet load="1rca" size="450" color="white" frame="true" align="right" spinBox="true" caption="1rca, resolution 1.9Å" /> '''STRUCTURE OF THE CRYS... |
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[[Image:1rca.jpg|left|200px]]<br /><applet load="1rca" size=" | [[Image:1rca.jpg|left|200px]]<br /><applet load="1rca" size="350" color="white" frame="true" align="right" spinBox="true" | ||
caption="1rca, resolution 1.9Å" /> | caption="1rca, resolution 1.9Å" /> | ||
'''STRUCTURE OF THE CRYSTALLINE COMPLEX OF DEOXYCYTIDYLYL-3',5'-GUANOSINE (3',5'-DCPDG) CO-CRYSTALISED WITH RIBONUCLEASE AT 1.9 ANGSTROMS RESOLUTION. RETROBINDING IN PANCREATIC RNASEA IS INDEPENDENT OF MODE OF INHIBITOR INTROMISSION'''<br /> | '''STRUCTURE OF THE CRYSTALLINE COMPLEX OF DEOXYCYTIDYLYL-3',5'-GUANOSINE (3',5'-DCPDG) CO-CRYSTALISED WITH RIBONUCLEASE AT 1.9 ANGSTROMS RESOLUTION. RETROBINDING IN PANCREATIC RNASEA IS INDEPENDENT OF MODE OF INHIBITOR INTROMISSION'''<br /> | ||
==Overview== | ==Overview== | ||
The X-ray structure of bovine ribonuclease A cocrystallized with the | The X-ray structure of bovine ribonuclease A cocrystallized with the dinucleotide deoxycytidylyl-3',5'-guanosine has been determined at 1.9 A resolution and refined by restrained least squares to R = 0.218 for 7807 reflections. The structure established that the recently observed retrobound mode of attachment of substrate analogues cytidylyl-2',5'-guanosine and deoxycytidylyl-3',5'-guanosine found in soaked RNase A crystals is also present in the cocrystallized complex. Retrobinding is thus unlikely to be the result of restrictions imposed by the crystalline environment as the ligands soak into the lattice but rather a phenomenon specific to small nucleotides containing guanine. | ||
==About this Structure== | ==About this Structure== | ||
1RCA is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] with PO4 and CGP as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Pancreatic_ribonuclease Pancreatic ribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.5 3.1.27.5] Full crystallographic information is available from [http:// | 1RCA is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] with <scene name='pdbligand=PO4:'>PO4</scene> and <scene name='pdbligand=CGP:'>CGP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Pancreatic_ribonuclease Pancreatic ribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.5 3.1.27.5] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RCA OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: Pancreatic ribonuclease]] | [[Category: Pancreatic ribonuclease]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Lisgarten, J | [[Category: Lisgarten, J N.]] | ||
[[Category: Palmer, R | [[Category: Palmer, R A.]] | ||
[[Category: CGP]] | [[Category: CGP]] | ||
[[Category: PO4]] | [[Category: PO4]] | ||
[[Category: hydrolase (endoribonuclease)]] | [[Category: hydrolase (endoribonuclease)]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:49:19 2008'' | ||
