A numerical investigation into possible mechanisms by that the A629P mutant of ATP7A causes Menkes Disease.

We study in silico possible mechanisms by that the A629P mutant of ATP7A causes Menkes Disease. Our results indicate that the mutation does not have appreciable affects on the stability of copper-bound states but rather destabilizes the characteristic end-to-end β-sheet. In this way, the mutation presumably increases the probability for aggregation and/or degradation leading to decreased concentration of the monomer.

[1]  Berk Hess,et al.  LINCS: A linear constraint solver for molecular simulations , 1997 .

[2]  S. Packman,et al.  Isolation of a candidate gene for Menkes disease and evidence that it encodes a copper–transporting ATPase , 1993, Nature Genetics.

[3]  Giovanni Scalmani,et al.  New developments in the polarizable continuum model for quantum mechanical and classical calculations on molecules in solution , 2002 .

[4]  Giovanni Scalmani,et al.  Energies, structures, and electronic properties of molecules in solution with the C‐PCM solvation model , 2003, J. Comput. Chem..

[5]  J. Kaplan,et al.  N-terminal Domains of Human Copper-transporting Adenosine Triphosphatases (the Wilson’s and Menkes Disease Proteins) Bind Copper Selectively in Vivo and in Vitro with Stoichiometry of One Copper Per Metal-binding Repeat* , 1997, The Journal of Biological Chemistry.

[6]  Kenneth M Merz,et al.  Insights into Cu(I) exchange in HAH1 using quantum mechanical and molecular simulations. , 2007, Biochemistry.

[7]  D. Thiele,et al.  Molecular mechanisms of copper uptake and distribution. , 2002, Current opinion in chemical biology.

[8]  T. Darden,et al.  Particle mesh Ewald: An N⋅log(N) method for Ewald sums in large systems , 1993 .

[9]  Y. Sugita,et al.  Comparisons of force fields for proteins by generalized-ensemble simulations , 2004 .

[10]  S. Dalosto Computer simulation of the interaction of Cu(I) with cys residues at the binding site of the yeast metallochaperone Cu(I)-Atx1. , 2007, The journal of physical chemistry. B.

[11]  W. L. Jorgensen,et al.  Development and Testing of the OPLS All-Atom Force Field on Conformational Energetics and Properties of Organic Liquids , 1996 .

[12]  Carsten Kutzner,et al.  GROMACS 4:  Algorithms for Highly Efficient, Load-Balanced, and Scalable Molecular Simulation. , 2008, Journal of chemical theory and computation.

[13]  K Schulten,et al.  VMD: visual molecular dynamics. , 1996, Journal of molecular graphics.

[14]  A. Rosato,et al.  An atomic-level investigation of the disease-causing A629P mutant of the Menkes protein, ATP7A. , 2005, Journal of molecular biology.

[15]  Jacopo Tomasi,et al.  Approximate evaluations of the electrostatic free energy and internal energy changes in solution processes , 1982 .

[16]  D W Cox,et al.  Role of the Copper-binding Domain in the Copper Transport Function of ATP7B, the P-type ATPase Defective in Wilson Disease* , 1999, The Journal of Biological Chemistry.

[17]  M. Alter,et al.  A sex-linked recessive disorder with retardation of growth, peculiar hair, and focal cerebral and cerebellar degeneration. , 1962, Pediatrics.

[18]  A. Matouschek,et al.  An unstructured initiation site is required for efficient proteasome-mediated degradation , 2004, Nature Structural &Molecular Biology.

[19]  Frank Eisenmenger,et al.  Variation of the Energy Landscape of a Small Peptide under a Change from the ECEPP/2 Force Field to ECEPP/3 , 1997, physics/9710020.

[20]  J. Tomasi,et al.  Electrostatic interaction of a solute with a continuum. A direct utilizaion of AB initio molecular potentials for the prevision of solvent effects , 1981 .

[21]  A. Becke Density-functional thermochemistry. III. The role of exact exchange , 1993 .

[22]  J. Tomasi,et al.  Ab initio study of solvated molecules: A new implementation of the polarizable continuum model , 1996 .

[23]  Z. Tümer,et al.  Identification of point mutations in 41 unrelated patients affected with Menkes disease. , 1997, American journal of human genetics.