An approach to creating a more realistic working model from a protein data bank entry

Verfasser / Beitragende:
[Christopher Brandon, Benjamin Martin, Kelly McGee, James Stewart, Sonja Braun-Sand]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Molecular Modeling, 21/1(2015-01-01), 1-11
Format:
Artikel (online)
ID: 605510776
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024 7 0 |a 10.1007/s00894-014-2520-1  |2 doi 
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245 0 3 |a An approach to creating a more realistic working model from a protein data bank entry  |h [Elektronische Daten]  |c [Christopher Brandon, Benjamin Martin, Kelly McGee, James Stewart, Sonja Braun-Sand] 
520 3 |a An accurate model of three-dimensional protein structure is important in a variety of fields such as structure-based drug design and mechanistic studies of enzymatic reactions. While the entries in the Protein Data Bank ( http://www.pdb.org ) provide valuable information about protein structures, a small fraction of the PDB structures were found to contain anomalies not reported in the PDB file. The semiempirical PM7 method in MOPAC2012 was used for identifying anomalously short hydrogen bonds, C-H⋯O/C-H⋯N interactions, non-bonding close contacts, and unrealistic covalent bond lengths in recently published Protein Data Bank files. It was also used to generate new structures with these faults removed. When the semiempirical models were compared to those of PDB_REDO ( http://www.cmbi.ru.nl/pdb_redo/ ), the clashscores, as defined by MolProbity ( http://molprobity.biochem.duke.edu/ ), were better in about 50% of the structures. The semiempirical models also had a lower root-mean-square-deviation value in nearly all cases than those from PDB_REDO, indicative of a better conservation of the tertiary structure. Finally, the semiempirical models were found to have lower clashscores than the initial PDB file in all but one case. Because this approach maintains as much of the original tertiary structure as possible while improving anomalous interactions, it should be useful to theoreticians, experimentalists, and crystallographers investigating the structure and function of proteins. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Semiempirical methods  |2 nationallicence 
690 7 |a PM7  |2 nationallicence 
690 7 |a Protein data bank  |2 nationallicence 
690 7 |a Geometric anomalies  |2 nationallicence 
700 1 |a Brandon  |D Christopher  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
700 1 |a Martin  |D Benjamin  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
700 1 |a McGee  |D Kelly  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
700 1 |a Stewart  |D James  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
700 1 |a Braun-Sand  |D Sonja  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
773 0 |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/1(2015-01-01), 1-11  |x 1610-2940  |q 21:1<1  |1 2015  |2 21  |o 894 
856 4 0 |u https://doi.org/10.1007/s00894-014-2520-1  |q text/html  |z Onlinezugriff via DOI 
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900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Brandon  |D Christopher  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Martin  |D Benjamin  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a McGee  |D Kelly  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Stewart  |D James  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Braun-Sand  |D Sonja  |u Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, 80918, Colorado Springs, CO, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/1(2015-01-01), 1-11  |x 1610-2940  |q 21:1<1  |1 2015  |2 21  |o 894