Conformation of Poly-L-alanine and Poly-DL-alanine in the Solid State

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Determination of -Helix and -Sheet Stability in the Solid State: A Solid-State NMR Investigation of Poly(L-Alanine)

The relative stability of -helix and -sheet secondary structure in the solid state was investigated using poly(L-alanine) (PLA) as a model system. Protein folding and stability has been well studied in solution, but little is known about solid-state environments, such as the core of a folded protein, where peptide packing interactions are the dominant factor in determining structural stability....

متن کامل

Raman optical activity of tetra-alanine in the poly(l-proline) II type peptide conformation.

The poly(l-proline) II (PPII) helix is considered to be a major conformation in disordered polypeptides and unfolded proteins in aqueous solution. The PPII conformation can be identified by using Raman optical activity (ROA), which measures the different intensities of right- and left-circularly polarized Raman scattered light from chiral molecules and provides information on stereochemistry as...

متن کامل

A study of the irradiation temperature coefficient for L-alanine and DL-alanine dosemeters.

Alanine dosimetry is now well established both as a reference and routine dosemeter for industrial irradiation processing. Accurate dosimetry under the relatively harsh conditions of industrial processing requires a characterisation of the parameters that influence the dosemeter response. The temperature of the dosemeter during irradiation is a difficult quantity to measure so that the accuracy...

متن کامل

A Quantitative Anharmonic Analysis of the Amide A Band in a-Helical Poly(L-Alanine)

Polarized ir spectra of oriented films of a-helical poly(L-alanine) (a-PLA) have been obtained as a function of residual solvent dichloroacetic acid (DCA). The amide A, B, II, and V regions exhibit multiple bands whose structure depends on the residual DCA content, and those associated with the aI-PLA structure have been identified. A calculation of the relevant cubic anharmonic force constants...

متن کامل

Prediction of the thermodynamics of protein unfolding: the helix-coil transition of poly(L-alanine).

The method given earlier for predicting the thermodynamics of protein unfolding from the x-ray structure of a protein is applied here to the poly(L-alanine) helix. First, the fitting parameters derived earlier from a data base of 10 proteins were used to predict the unfolding thermodynamics of 4 other proteins. The agreement between the observed and predicted values is comparable to that found ...

متن کامل

ذخیره 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: Kobunshi Kagaku

سال: 1965

ISSN: 1884-8079,0023-2556

DOI: 10.1295/koron1944.22.84