Hemoglobin giant

A recent application of the maximum-entropy deconvolution is the interpretation of ESl-MS spectra from the giant, extracellular hexagonal bilayer hemoglobin from the leech Nephelopsis oscura, consisting of three monomer globin chains, five non-globin linker chains, and two subunits, ranging between 16 and 33 kDa [18],... 

B.N. Green, S.N. Vinogradov, An ESI-MS study of the subunit structure of the giant hemoglobin from the leech Nephelopsis oscura, J. Am. Soc. Mass Spectrom., 15 (2004) 22. 

Numata M, Yamazaki T, Fukumori Y, Yamanaka T (1989) Some properties of Nitrosomonas europaea cytochrome c oxidase ([Pg.141]

Several large invertebrate protein complexes have considerable historical significance and are particularly useful as controls for specimen preparation, STEM imaging, and image analysis. These include a wide variety of giant hemoglobins... 

Particle size can be used to classify a mixture as colloid or solution. CoUoid particles range in diameter from 5 to 1000 nm solute particles are smaller than 5 run in diameter. A colloid particle may even consist of a single giant molecule. The hemoglobin molecule, for example, which carries oxygen in your blood, has molecular dimensions of 6.5 X 5.5 X 5.0 nm and a molar mass of 64,500 g/mol. 

Annelid hemoglobin is also a giant macromolecu-lar assembly, with a relative molecular mass of 3MDa. Extensive negative staining studies have been performed on this macromolecule, which tend to reveal the same type of stable orientations of the... 

Subunits of giant extracellular hemoglobins from earthworms Pontodiilus matsushimensis and Pheretima communissima [521]... 

The term supramolecular polymer applies to any type of polymer-tike assembly that spontaneously forms by the reversible linear aggregation of one or more type of molecule in solution or in the melt. The crucial factor discriminating supramolecular from conventional or so-called dead polymers, is that for the former the monomeric and the polymeric states are in thermal equilibrium with each other, while for the latter this is not so (on the relevant experimental timescale). Examples of supramolecular polymers include the so-called giant surfactant micelles [1], peptide )3-sheet ribbons [2], self-assembled stacks of discotic molecules [3], protein fibers such as those formed by sickle cell hemoglobin [4], and so on. Chains of colloidal particles found in quite diverse contexts [5-8] and living polymers of chemically reactive species [9] also belong to the class of supramolecular polymers, if only in principle. 

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