Quaternary structure has little influence on spin states in mixed-spin human methemoglobins

Biochemistry ◽  
1985 ◽  
Vol 24 (12) ◽  
pp. 2985-2992 ◽  
Author(s):  
John S. Philo ◽  
Ulrich Dreyer
Keyword(s):  
Quaternary Structure ◽  
Spin States ◽  
Mixed Spin

scholarly journals Experimental Test of Residual Error-Disturbance Uncertainty Relations for Mixed Spin-½States

2016 ◽  
Vol 117 (14) ◽  
Author(s):  
Bülent Demirel ◽  
Stephan Sponar ◽  
Georg Sulyok ◽  
Masanao Ozawa ◽  
Yuji Hasegawa
Keyword(s):  
Experimental Test ◽  
Residual Error ◽  
Uncertainty Relations ◽  
Spin States ◽  
Mixed Spin

Interactions between the quaternary structure of the globin and the spin state of the heme in ferric mixed spin derivatives of hemoglobin

Biochemistry ◽  
1978 ◽  
Vol 17 (17) ◽  
pp. 3640-3652 ◽  
Author(s):  
Max F. Perutz ◽  
Jeremy K. M. Sanders ◽  
David H. Chenery ◽  
Robert W. Noble ◽  
Russell R. Pennelly ◽  
...  
Keyword(s):  
Spin State ◽  
Quaternary Structure ◽  
Mixed Spin ◽  
Derivatives Of

scholarly journals New Developments in Charge Transfer Multiplet Calculations: Projection Operators, Mixed-Spin States and π-Bonding

2007 ◽  
Author(s):  
F. M. F. de Groot ◽  
R. K. Hocking ◽  
C. Piamonteze ◽  
B. Hedman ◽  
K. O. Hodgson ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Projection Operators ◽  
Spin States ◽  
New Developments ◽  
Mixed Spin

Quaternary structure of Limulus polyphemus hemocyanin

1978 ◽  
Vol 36 (2) ◽  
pp. 176-177
Author(s):  
T. Wichertjes ◽  
E.J. Kwak ◽  
E.F.J. Van Bruggen
Keyword(s):  
Electron Microscopy ◽  
Functional Properties ◽  
Horseshoe Crab ◽  
Temperature Jump ◽  
Quaternary Structure ◽  
Crystallographic Analysis ◽  
Limulus Polyphemus ◽  
Oxygen Binding ◽  
X Ray ◽  
Intact Molecule

Hemocyanin of the horseshoe crab (Limulus polyphemus) has been studied in nany ways. Recently the structure, dissociation and reassembly was studied using electron microscopy of negatively stained specimens as the method of investigation. Crystallization of the protein proved to be possible and X-ray crystallographic analysis was started. Also fluorescence properties of the hemocyanin after dialysis against Tris-glycine buffer + 0.01 M EDTA pH 8.9 (so called “stripped” hemocyanin) and its fractions II and V were studied, as well as functional properties of the fractions by NMR. Finally the temperature-jump method was used for assaying the oxygen binding of the dissociating molecule and of preparations of isolated subunits. Nevertheless very little is known about the structure of the intact molecule. Schutter et al. suggested that the molecule possibly consists of two halves, combined in a staggered way, the halves themselves consisting of four subunits arranged in a square.

Characterization of Tamm-Horsfall Urinary Glycoprotein

1973 ◽  
Vol 31 ◽  
pp. 420-421
Author(s):  
John P. Robinson ◽  
J. David Puett
Keyword(s):  
Electron Microscopy ◽  
Circular Dichroism ◽  
Secondary Structure ◽  
Quaternary Structure ◽  
Normal Adult ◽  
Morphological Properties ◽  
Adult Males ◽  
Circular Dichroïsm ◽  
Urinary Glycoprotein

Much work has been reported on the chemical, physical and morphological properties of urinary Tamm-Horsfall glycoprotein (THG). Although it was once reported that cystic fibrotic (CF) individuals had a defective THG, more recent data indicate that THG and CF-THG are similar if not identical.No studies on the conformational aspects have been reported on this glycoprotein using circular dichroism (CD). We examined the secondary structure of THG and derivatives under various conditions and have correlated these results with quaternary structure using electron microscopy.THG was prepared from normal adult males and CF-THG from a 16-year old CF female by the method of Tamm and Horsfall. CF female by the method of Tamm and Horsfall.

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