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Rapana thomasiana hemocyanin (RtH): Comparison of the two isoforms, RtH1 and RtH2, at 19 angstrom 16 angstrom resolution
Södertörn University, School of Life Sciences. Karolinska Institutet.
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2006 (English)In: Micron, ISSN 0968-4328, E-ISSN 1878-4291, Vol. 37, no 6, 566-576 p.Article in journal (Refereed) Published
Abstract [en]

Three-dimensional (3D) reconstructions of the two 8.4 MDa Rapana thomasiana hemocyanin isoforms, RtH1 and RtH2, have been obtained by cryoelectron microscopy of molecules embedded in vitreous ice and single particle image processing. The final 3D structures of the RtH1 and RtH2 didecamers at 19 angstrom and 16 angstrom resolution, respectively, are very similar to earlier reconstructions of gastropodan hemocyanins, revealing structural features such as the obliquely oriented subunits, the five- and two-fold symmetrical axes. Three new interactions are defined; two of them connecting the arch and the wall while the third is formed between the collar and the wall. The collar-wall connection and one of the arch-wall connections are positioned between two individual subunit dimers, while the second arch-wall connection is located between two subunits within the subunit dimer. All three interactions establish connections to the first tier of the wall. Furthermore, for each interaction we have allocated two first tier functional units most likely involved in forming the connections.

Place, publisher, year, edition, pages
2006. Vol. 37, no 6, 566-576 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:sh:diva-14318DOI: 10.1016/j.micron.2005.11.014ISI: 000239696200009PubMedID: 16466927Scopus ID: 2-s2.0-33745958772OAI: oai:DiVA.org:sh-14318DiVA: diva2:468079
Available from: 2011-12-20 Created: 2011-12-20 Last updated: 2014-04-23Bibliographically approved

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Koeck, Philip J. B.
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CiteExportLink to record
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Citation style
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