Poly glycine

Cheam, T. C., and S. Krimm. 1985. Infrared Intensities of Amide Modes in N-methyl-acetamide and Poly(Glycine I) From Ab Initio Calculations of Dipole Moment Derivatives of N-methylacetamide. J. Chem. Phys. 82, 1631-1641. 

V.A. Basiuk and J. Douda, Pyrolysis of poly glycine and poly 1 alanine analysis of less volatile products by gas chromatography/Fourier Transform infrared spectroscopy/mass spectrometry, J. Anal. Appl. Pyrol., 55, 235 236 (2000). 

Poly glycine linkers were also used to connect these sequences (Maraganore... 

Complexes with Glycine and Poly(glycine) Peptides... 

A variety of homopolypeptides were synthesized by the N-carboxy a-amino acid anhydride (NCA), activated ester, or azide methods 5 except for deuterium labelled samples and polyglycines. The physical state of these samples is in general a semicrystalline state. Poly(glycine) (MW = 5200) was purchased from Sigma Chemical Company. 

Foerster et alf 1 measured the first 15N CP/MAS NMR spectra of some 15N-labelled homopolypeptides in the solid state. Figure 16 shows the 30.5-MHz 15N CP/MAS NMR spectra of poly(L-leucine), poly(L-phenylalanine) and poly (glycine). The 15N chemical shifts of solid homopolypeptides47 are... 

Abbreviations PGI, poly (glycine) I form (/3-sheet) PGII, poly(glycine) II form (31-helix) PPI, poly(L-proline) I form (103-helix) PPII, poly(L-proline) II form (3 -helix). c Differences in the 15N chemical shifts of the a-helix relative to those of the /3-sheet form. 

Fig. 24. Correlation of the l5N chemical shifts of Gly of copolypeptides, [Gly, X] , with those of host homopolypeptides [X] in the solid state. The arrow indicates the 5N chemical shift of poly (glycine).

Fig. 27. Plots of the isotropic l5N shielding (cr22 and

S. Premilat and J. Hermans, /. Chem. Phys., 59, 2602 (1973). Conformational Statistics of Short Chains of Poly(L-Alanine) and Poly(Glycine) Generated by Monte Carlo Method and the Partition Function of Chains with Constrained Ends. 

S. Duan, et al., Osteocompatibility evaluation of poly(glycine ethyl ester-co-alanine ethyl ester)phosphazene with honeycomb-patterned surface topography. J. Biomed. Mater. Res. A 101 (2) (2013) 307-317, doi 10.1002/jbm.a.34282. 

MAS ID exchange NMR method (time-reversed ODESSA) [163] was also utflized to study superslow backbone dynamics of dried or wet protein barstar and poly glycine [164] the correlation time of the motion in the wet barstar at room temperature is 50—100 ms. 

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