Vibrational analysis of conformation in peptides, polypeptides, and proteins
نویسندگان
چکیده
منابع مشابه
Vibrational analysis of conformation in peptides, polypeptides, and proteins.
A vibrational force field for the polypeptide chain has been developed for normal-mode analysis of such molecules. I t can reproduce observed frequencies of known structures to within about 5 cm-l. We review the application of this technique to conformational problems in peptides (@-turns and their model compounds), polypeptides [the aII-helix and crystalline poly(g1ycine II)], and proteins (ba...
متن کاملVibrational analysis of peptides, polypeptides, and proteins. V. Normal vibrations of beta-turns.
T h e normal modes have been calculated for p-turns of types I, 11, 111, 1’, 11’, and 111’. The complete se t of frequencies is given for the first three structures; only the amide I, 11, and I l l modes are given for the latter three structures. Calculations have been done for structures with standard dihedral angles, as well as for structures whose dihedral angles differ from these by amounts...
متن کاملVibrational analysis of peptides, polypeptides, and proteins: XXX. Normal mode analyses of -turns
The normal modes have been calculated for three kinds of low energy y-turn structures resulting from recent conformational energy calculations by Nkmethy. Frequencies have been computed for a y-turn, a mirror-related 7-turn, and an inverse y-turn of CH3-CO-(L-Ala),-NH-CH3, with n = 3 and n = 5 , and for certain l4 C and l5 N derivatives of the n = 3 molecule. Correlations are evident between am...
متن کاملVibrational analysis of peptides, polypeptides and proteins. XXVII. Structure of gramicidin S from normal mode analyses of low-energy conformations.
Normal mode calculations have been carried out on three low-energy structures of gramicidin S obtained from conformational energy calculations. When the results on the amide modes are compared with observed bands in the infrared and Raman spectra of crystalline gramicidin S and its N-deuterated derivative, one of the structures is clearly disfavored. Of the other two, one is slightly favored, a...
متن کاملthe stady and analysis of rice agroclimatology in lenjan
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biopolymers
سال: 1983
ISSN: 0006-3525,1097-0282
DOI: 10.1002/bip.360220130