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Computer Research and Modeling, 2014, Volume 6, Issue 5, Pages 761–774 (Mi crm357)  

ANALYSIS AND MODELING OF COMPLEX LIVING SYSTEMS

Molecular model of OCP-phycobilisome complex formation

D. V. Zlenkoa, I. N. Stadnichukb, P. M. Krasilnikova

a Lomonosov Moscow State University, 1/12 Vorobevy Gogy, Moscow, 11991, Russia
b A. N. Bach Institute of Biochemistry RAS, 33 Leninsky av., Moscow, 119071, Russia

Abstract: A molecular model of phicobilisome complex with a quenching protein OCP which regulates the energy transfer from phicobilisome to photosystem in photosynthetic apparatus of cyanobacteria has been developed. In the model obtained a well known spatial structure of interacting proteins remains intact and also the energy transfer from phycobilisome to OCP with reasonable rates is possible. Free energy of complex formation was calculated using MM-PBSA approach. By the order of magnitude this energy is about tens of kJ/mole. This value correlates well with experimental observed low stability of this complex. The specific surface energy of interaction between hydrophylic phicobilisome and OCP is twice larger than specific surface energy of their interaction with water. This reflects a high molecular complementary of interacting protein surfaces and is a strong pro argument for proposed model.

Keywords: OCP, MM-PBSA, phycobilisome, OCP, complexation, molecular modeling, free energy, MM-PBSA.

Funding Agency Grant Number
Russian Science Foundation 14-14-00589


DOI: https://doi.org/10.20537/2076-7633-2014-6-5-761-774

Full text: PDF file (3384 kB)
Full text: http://crm.ics.org.ru/.../2193
References: PDF file   HTML file

UDC: 577.31, 577.32, 577.34
Received: 24.07.2014
Revised: 18.08.2014

Citation: D. V. Zlenko, I. N. Stadnichuk, P. M. Krasilnikov, “Molecular model of OCP-phycobilisome complex formation”, Computer Research and Modeling, 6:5 (2014), 761–774

Citation in format AMSBIB
\Bibitem{ZleStaKra14}
\by D.~V.~Zlenko, I.~N.~Stadnichuk, P.~M.~Krasilnikov
\paper Molecular model of OCP-phycobilisome complex formation
\jour Computer Research and Modeling
\yr 2014
\vol 6
\issue 5
\pages 761--774
\mathnet{http://mi.mathnet.ru/crm357}
\crossref{https://doi.org/10.20537/2076-7633-2014-6-5-761-774}


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