This page contains general
information about the
DFT
Database for RNA Catalysis. Click on any of the following
links:
What
is the Database?
The
DFT
Database for RNA Catalysis is a large collection of high-level
density-functional electronic structure calculations of molecules,
complexes and reactions relevent to RNA Catalysis. This is part
of a 5-year project funded by the NIH to study the molecular mechanisms
of RNA enzymes, or ribozymes. A detailed understanding of RNA
catalysis is fundamental to biology, and has important implications
toward the design of new medical therapies that target genetic
disorders as well as the development of new biotechnology.
The
DFT
Database for RNA Catalysis can be used to derive information
about molecular structure, compelxes and reactions. Moreover, the
design of the database with a careful and consistent theoretical level
opens the door to the design of new, highly accurate and efficient
quantum models able to be applied in large-scale hybrid quantum
mechanical/molecular mechanical simulations of ribozyme reactions.
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What
does the Database contain?
The database contains information derivable from electronic structure
calculations including:
- Geometries of stationary points (minima and transition states)
- Vibrational frequencies
- Thermodynamic quantities
- Solvation free energies
- Electrostatic potential maps
- Dipole moments
- Atomic charges
- Polarizabilities
The technical details of the calculations are described
elsewhere.
The Database contains a host of molecular structures and reactions
relevent to RNA catalysis including:
- Biological phosphates and phosphoranes
- Chemical reactions
- Thio effects
- Hydrogen bonded complexes
- Metal ion complexes
The chemical reaction database includes:
- Model transphosphorylation and hydrolysis reactions
- Reactions of cyclic and acyclic phosphates
- Reactions of phosphate mono-, di- and triesters
- Reactions with enhanced leaving groups
- Reactions with sulfur substitutions (thio effects)
- Metal-catalyzed reactions
In all reactions the effects of solvation and pH (protonation state)
are considered.
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How
do I to use the Database?
Basic use of the
DFT
Database for RNA Catalysis
is very simple. All you need to do to start out is go to the
Database
Search Page accessible from the main page. From there you
can perform
searches for individual molecules, chemical reactions, hydrogen bonded
complexes, etc... based on molecular formulas or a host of other
chemical properties. You can also choose to browse the contents
of the entire database.
Although the
DFT
Database for RNA Catalysis can be used alone to access property
information, to take full advantage through visualization and
animation, you will need to set up a special release of the MOLDEN
program as a viewer for chemical MIME types (see the link off of the
main page for further details).
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Further
Information
For specialists wanting to know more information about how the files
composing the Database were constructed, additional information
regarding the
Calculation Details
and the
Nomenclature and Conventions
used for the Database are available.
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