Now showing items 91-100 of 119
On the structure of the iron-sulfur complex in the two-iron ferredoxins
(Elsevier, 1971-12-07)
Recent spectroscopic and magnetic susceptibility studies of the iron center in the two-iron ferredoxins provide criteria which any model for the iron-sulfur complex in these proteins must satisfy. These criteria are most ...
Vibrational analysis of peptides, polypeptides, and proteins. XV. Crystalline polyglycine II
(Wiley Subscription Services, Inc., A Wiley Company, 1982-12)
A force field has been refined for the 3 1 -helix structure of polyglycine II, using the polyglycine I force field plus previous C Α H Α ...O force constants as a starting point. Besides force constants associated with the ...
Vibrational analysis of crystalline tri- L -alanine This paper is number 41 in a series on vibrational analysis of peptides, polypeptides, and proteins, of which Ref. 15 is paper 40.
(Wiley Subscription Services, Inc., A Wiley Company, 1991-02-05)
We have found that tri- L -alanine (Ala 3 ) can crystallize in a parallel-chain Β structure in addition to the previously known antiparallel-chain Β structure. Although the chain conformations in each structure are essentially ...
Ab initio-based vibrational analysis of α-poly( L -alanine)
(Wiley Subscription Services, Inc., A Wiley Company, 1998-10-15)
Polarized ir and Raman spectra have been obtained on oriented films of α-helical poly( L -alanine) (α-PLA) and its N-deuterated derivative. These improved spectra permit a more complete assignment of observed bands to A-, ...
Under the microscope: Single molecule symposium at the University of Michigan, 2006
(Wiley Subscription Services, Inc., A Wiley Company, 2007-02-05)
In recent years, a revolution has occurred in the basic sciences, which exploits novel single molecule detection and manipulation tools to track and analyze biopolymers in unprecedented detail. A recent Gordon Research ...
A polarizable electrostatic model of the N-methylacetamide dimer
(John Wiley & Sons, Inc., 2001-12)
Our previously developed polarizable electrostatic model is applied to isolated N-methylacetamide (NMA) and to three hydrogen-bonded configurations of the NMA dimer. Two versions of the model are studied. In the first one ...
Self Assembly and Optical Properties of Dendrimer Nanocomposite Multilayers
(WILEY-VCH Verlag, 2007-08-07)
Ultrathin multilayers are important for electrical and optical devices, as well as for immunoassays, artificial organs, and for controlling surface properties. The construction of ultrathin multilayer films by electrostatic ...
C=O stretch mode splitting in the formic acid dimer: Electrostatic models of the intermonomer interaction
(Elsevier, 1987-06)
The physical origin of the large (74 cm-1) splitting between the symmetric (Ag) and antisymmetric (Bu) components of the C=O stretch mode in the formic acid dimer has previously been attributed to tautomerism effects, ...
Low temperature infrared spectra of polyglycines and C—H ... O[bouble bond]C hydrogen bonding in polyglycine II
(Wiley Subscription Services, Inc., A Wiley Company, 1968-03)
Infrared spectra of polyglycines I and II obtained at −170°C. have been compared with those obtained at room temperature. The changes in frequency of some of the C—H stretching bands are consistent with the earlier suggestion ...