Analysis of CDK2 active-site hydration: A method to design new inhibitors

KŘÍŽ, Zdeněk, Michal OTYEPKA, Iveta BÁRTOVÁ a Jaroslav KOČA. Analysis of CDK2 active-site hydration: A method to design new inhibitors. Proteins: Structure, Function, and Bioinformatics. Wiley, 2004, roč. 55, č. 3, s. 258-274. ISSN 0887-3585.

Základní údaje

• Originální název: Analysis of CDK2 active-site hydration: A method to design new inhibitors
• Název česky: Analýza hydratace CDK2 aktivního místa
• Autoři: KŘÍŽ, Zdeněk (203 Česká republika, garant), Michal OTYEPKA (203 Česká republika), Iveta BÁRTOVÁ (203 Česká republika) a Jaroslav KOČA (203 Česká republika).
• Vydání: Proteins: Structure, Function, and Bioinformatics, Wiley, 2004, 0887-3585.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Článek v odborném periodiku
• Obor: 10403 Physical chemistry
• Stát vydavatele: Česká republika
• Utajení: není předmětem státního či obchodního tajemství
• Impakt faktor: Impact factor: 4.429
• Kód RIV: RIV/00216224:14310/04:00009962
• Organizační jednotka: Přírodovědecká fakulta
• UT WoS: 000220980600007
• Klíčová slova anglicky: cyclin-dependent kinase; ATP; roscovitine; isopentenyladenine; molecular dynamics; hydration of proteins; structural water molecules
• Štítky: ATP, cyclin-dependent kinase, hydration of proteins, isopentenyladenine, molecular dynamics, roscovitine, structural water molecules

Anotace

The interactions between the protein and the solvent were analyzed, and protein regions with a high density of water molecules, as well as structural water molecules, were determined by using molecular dynamics (MD) simulations. A number of water molecules that were in contact with the protein for the whole trajectory were determined. Their interaction energies and hydrogen bonds with protein residues were analyzed. Altogether, 39, 27, 49, and 32 water molecules bound to the protein were found for trajectories of the free CDK2, CDK2/ATP, CDK2/roscovitine, and CDK2/isopentenyladenine complexes, respectively. Positions of observed water molecules were compared with X-ray crystallography data. Special attention was paid to water molecules in the active site of the enzyme, and especially to the deep pocket, where the N9 roscovitine side-chain is buried. Exchange of active-site water molecules with bulk water through the tunnel from the pocket was observed. In the CDK2/isopentenyladenine complex simulation, two water molecules that arrange interaction between the inhibitor and the enzyme via an H-bond were observed. Two stable water molecules in the trajectory of the free CDK2 were found that occupy the same position as the nitrogens N3 and N9 of the isopentenyladenine or N1 and N6 nitrogens of the adenosine triphosphate (ATP). The positions of structural water molecules were compared with the positions of substrate polar groups and crystallographic water molecules found in the Brookhaven Protein Data Bank for various CDK2 complexes. It was concluded that tracing tightly bound water molecules may substantially help in designing new inhibitors

Anotace česky

The interactions between the protein and the solvent were analyzed, and protein regions with a high density of water molecules, as well as structural water molecules, were determined by using molecular dynamics (MD) simulations. A number of water molecules that were in contact with the protein for the whole trajectory were determined. Their interaction energies and hydrogen bonds with protein residues were analyzed. Altogether, 39, 27, 49, and 32 water molecules bound to the protein were found for trajectories of the free CDK2, CDK2/ATP, CDK2/roscovitine, and CDK2/isopentenyladenine complexes, respectively. Positions of observed water molecules were compared with X-ray crystallography data. Special attention was paid to water molecules in the active site of the enzyme, and especially to the deep pocket, where the N9 roscovitine side-chain is buried. Exchange of active-site water molecules with bulk water through the tunnel from the pocket was observed. In the CDK2/isopentenyladenine complex simulation, two water molecules that arrange interaction between the inhibitor and the enzyme via an H-bond were observed. Two stable water molecules in the trajectory of the free CDK2 were found that occupy the same position as the nitrogens N3 and N9 of the isopentenyladenine or N1 and N6 nitrogens of the adenosine triphosphate (ATP). The positions of structural water molecules were compared with the positions of substrate polar groups and crystallographic water molecules found in the Brookhaven Protein Data Bank for various CDK2 complexes. It was concluded that tracing tightly bound water molecules may substantially help in designing new inhibitors

Návaznosti

• GV201/98/K041, projekt VaV: Název: HCILAB - Laboratoř interakcí člověka s počítačem

Investor: Grantová agentura ČR, HCILAB - Laboratoř interakcí člověka s počítačem

• MSM 143100005, záměr: Název: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Strukturně-funkční vztahy biomolekul a jejich role v metabolismu