Contributors

M. Baaden*, G. Wipff, F. Berny
*Laboratory of Molecular Biophysics
University of Oxford

References

[2000.4]
M. Baaden, G. Wipff, M. R. Yaftian, M. Burgard and D. Matt;
J. chem. Soc., Perkin Trans. 2. 2000,1315
Cation coordination by calix{4}arenes bearing amide and/or phosphine oxide pendant groups: how many arms are needed to bind Li+ vs Na+ ? A combined NMR and molecular dynamics study.

[2000.6]
M. Baaden, F. Berny, G. Wipff and C. Madic
J. Phys. Chem. A 2000,104,7659
A molecular dynamics and quantum mechanics study of M3+ lanthanide cation solvation by acetonitrile: the role of cation size, counterions and polarization effects investigated.

[2001.2]
M. Baaden, M. Burgard, C. Boehme and G. Wipff
Phys. Chem. Chem. Phys. 2001 ,3, 1317
Lanthanide cation binding to a phosphoryl-calix{4}arene: the importance of solvent and counterions investigated by molecular dynamics and quantum mechanical simulations

[2001.3]
M. Baaden, M. Burgard, and G. Wipff
J. Phys. Chem. B 2001,105, 11131
TBP at the water - oil interface: the effect of TBP concentration and water acidity investigated by molecular dynamics simulations

Comments

No responsibility is assumed for any errors (though should be correct). Check charges carefully prior to using the parameters.
Amber parameters and input files
================================

Marc Baaden

1. Prep files
=============

1.1. Ions
---------

Filename               PDBS                    Comment
...................... ....................... ...................... 
H3O.bin                H3O+.pdb                Hydronium (+1)
Eu3+.bin               EU3+.pdb                Europium (3+)
Yb3+.bin               YB3+.pdb                Ytterbium (3+)
La3+.bin               La3+.pdb                Lanthanum (3+)
NO3.bin                NO3-.pdb                Nitrate (-)
PCL.bin                PCL-.pdb                Perchlorate (-)
TFL.bin                TFL-.pdb                Triflate (-)

1.2. Organic Molecules
----------------------

Filename               PDBS                    Comment
...................... ....................... ...................... 
ACN.bin                HNO3.pdb                Nitric acid
CA1.bin                TETA.pdb                Scaffold for
                                               calixarenes
CON.bin                DPDA.pdb,DPPM.pdb       Calix-cone part
DPP.bin                DPDA.pdb,DPPM.pdb       diphenylphosphineoxide
                                               arm
TBU.bin                DPDA.pdb,DPPM.pdb       tert-butyl-unit
AMI.bin                TETA.pdb,DPDA.pdb       Amide moiety for
                                               calixarenes
PHO.bin                1tbp.pdb                Neutral PO from TBP
POP.bin                tbph+.pdb               Protonated POH from
                                               TBPH+ (+1)
OBU.bin                1tbp.pdb,tbph+.pdb      O-butyl moiety of TBP

2. PDB files
============

2.1. Ions
---------

Filename      residues      reference     charge        description
............. ............. ............. ............. ............. 
H3O+.pdb      H3O           [2001.3]      +1            Hydronium ion
EU3+.pdb      M             [2000.6]      +3            Europium
YB3+.pdb      M             [2000.6]      +3            Ytterbium
NO3-.pdb      NO3           [2001.3]      -1            Nitrate
PCL-.pdb      PCL           [2000.6]      -1            Perchlorate
TFL-.pdb      TFL           [2000.6]      -1            Triflate

2.2. Organic Molecules
----------------------

Filename      residues      reference     charge        description
............. ............. ............. ............. ............. 
HNO3.pdb      ACN           [2001.3]      0             Nitric acid
1tbp.pdb      PHO, OBU      [2001.3]      0             tri-n-butyl-phosphate
tbph+.pdb     POP, OBU      [2001.3]      +1            tri-n-butyl-phosphate
DPPM.pdb      CON, DPP, TBU [2000.4][2001.2] 0          tetraphosphineoxide
                                                        calix[4]
DPDA.pdb      CON, DPP, TBU [2000.4]      0             di-phosphineoxide-diamide
                                                        calix[4]

3. Errata
=========

In [2001.3] there is an error concerning the TBP and TBPH+ charges.
The Second CT in OS-CT-CT-.. has to bear a +0.06 charge and not a
-0.06 one.

In [2000.4] there are two errors concerning the charges. One for the
amide fragment, where the alpha amide carbon is not charged -0.323 but
+0.323. One for the phosphine-oxide, where the bottom HA is indicated
as 0.0122 and should be 0.122 (these have been corrected in the 
downloadable files here).



[ APD Home ] [ Submit Parameters ] [ Amber Home ] [ UK Mirror ] [ Pharmacy Home ] [ Contact ]

Last modified Thu Mar 14 11:48:41 GMT 2002