This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
1i0v
From Proteopedia
| Line 4: | Line 4: | ||
|PDB= 1i0v |SIZE=350|CAPTION= <scene name='initialview01'>1i0v</scene>, resolution 1.234Å | |PDB= 1i0v |SIZE=350|CAPTION= <scene name='initialview01'>1i0v</scene>, resolution 1.234Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=2GP:GUANOSINE-2'-MONOPHOSPHATE'>2GP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Ribonuclease_T(1) Ribonuclease T(1)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.3 3.1.27.3] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribonuclease_T(1) Ribonuclease T(1)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.3 3.1.27.3] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1i0x|1I0X]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1i0v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1i0v OCA], [http://www.ebi.ac.uk/pdbsum/1i0v PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1i0v RCSB]</span> | ||
}} | }} | ||
| Line 28: | Line 31: | ||
[[Category: Swarte, J De.]] | [[Category: Swarte, J De.]] | ||
[[Category: Vos, S De.]] | [[Category: Vos, S De.]] | ||
| - | [[Category: 2GP]] | ||
| - | [[Category: CA]] | ||
[[Category: 2'gmp]] | [[Category: 2'gmp]] | ||
[[Category: metal binding]] | [[Category: metal binding]] | ||
| Line 36: | Line 37: | ||
[[Category: stability]] | [[Category: stability]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:13:04 2008'' |
Revision as of 18:13, 30 March 2008
| |||||||
| , resolution 1.234Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Activity: | Ribonuclease T(1), with EC number 3.1.27.3 | ||||||
| Related: | 1I0X
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Ribonuclease T1 in complex with 2'GMP (form I crystal)
Overview
In the crystalline state, ribonuclease T1 binds calcium ions at different lattice-dependent positions. In solution, its conformational stability is also remarkably increased in the presence of divalent metal ions. Combining urea unfolding studies and X-ray crystallography, we compared the presence of several metal ions at specific sites in the protein to their contribution to the overall stabilizing effect in solution. We constructed thermodynamic cycles involving particular metal ions and specific carboxylate functions. The resulting coupling energies indicate that some (but not all) metal ions found at lattice contacts in crystal structures may indeed significantly contribute to stability enhancement in the presence of metal ions in solution.
About this Structure
1I0V is a Single protein structure of sequence from Aspergillus oryzae. Full crystallographic information is available from OCA.
Reference
The contribution of metal ions to the conformational stability of ribonuclease T1: crystal versus solution., Deswarte J, De Vos S, Langhorst U, Steyaert J, Loris R, Eur J Biochem. 2001 Jul;268(14):3993-4000. PMID:11453993
Page seeded by OCA on Sun Mar 30 21:13:04 2008
