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Modulation of the intermolecular interaction of myoglobin by removal of the heme

Toward understanding intermolecular interactions governing self-association of proteins, the present study investigated a model protein, myoglobin, using a small-angle X-ray scattering technique. It has been known that removal of the heme makes myoglobin aggregation-prone. The interparticle interfer...

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Detalles Bibliográficos
Autores principales: Imamura, Hiroshi, Morita, Takeshi, Sumi, Tomonari, Isogai, Yasuhiro, Kato, Minoru, Nishikawa, Keiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3795556/
https://www.ncbi.nlm.nih.gov/pubmed/24121340
http://dx.doi.org/10.1107/S0909049513022772
Descripción
Sumario:Toward understanding intermolecular interactions governing self-association of proteins, the present study investigated a model protein, myoglobin, using a small-angle X-ray scattering technique. It has been known that removal of the heme makes myoglobin aggregation-prone. The interparticle interferences of the holomyoglobin and the apomyoglobin were compared in terms of the structure factor. Analysis of the structure factor using a model potential of Derjaguin–Laudau–Verwey–Overbeek (DLVO) suggests that the intermolecular interaction potential of apomyoglobin is more attractive than that of holomyoglobin at short range from the protein molecule.