Effect of Disinfection by Customary and its Modified Techniques on Reduction of Bacteria Contaminating on a Windowless Chicken House

Imanishi, Yoshio; Mizuno, Tomomi; Yashita, Yuji; Furuta, K.

doi:10.2141/jpsa.20.354

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“…These are therefore potential candidates for "cis-allowed" Pro-Sar and Sar-Pro type peptide bonds. 15,16 For these reasons, it would be of great value to elucidate the crystal structure of conformationally interesting cyclic peptides.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)₂ containing all‐cis peptide units

Ueno

Shimizu

1983

Biopolymers

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SynopsisThe crystal structure and conformation of the synthetic cyclic tetrapeptide, cyclo(L-Pro-Sar)z, was determined by x-ray analysis. The peptide crystallizes in the orthorhombic space group P21212~ with cell parameters a = 9.277(1), b = 12.884(1), and c = 15.581(2) A. The crystal structure was solved by the symbolic addition procedure for direct phase determination and least-squares refinement using 1796 reflections, which led to the final R value of 0.043. This structure provides the first example observed in a crystal of a cyclic tetrapeptide in which all four peptide units have been found in the cis conformation with w angles deviating slightly by 2"-10" from the ideal value of 0". It was also found that the two Pro C"-CO single bonds assumed a trans' ($ = 159.6" and 158.4") conformation. Adjoining average planes of the peptide groups fall at nearly right angles to each other. The pyrrolidine ring conformations of the two prolyl residues are in the envelope form, with Cr carbon out of the least-squares planes for the remaining four atoms.

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Section: Introductionmentioning

confidence: 99%

Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)₂ containing all‐cis peptide units

Ueno

Shimizu

1983

Biopolymers

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Effect of Disinfection by Customary and its Modified Techniques on Reduction of Bacteria Contaminating on a Windowless Chicken House

Cited by 1 publication

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Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)₂ containing all‐cis peptide units

Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)₂ containing all‐cis peptide units

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Effect of Disinfection by Customary and its Modified Techniques on Reduction of Bacteria Contaminating on a Windowless Chicken House

Cited by 1 publication

References 0 publications

Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)2 containing all‐cis peptide units

Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)2 containing all‐cis peptide units

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Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)₂ containing all‐cis peptide units

Crystal structure and conformation of a cyclic tetrapeptide cyclo(L‐Pro‐Sar)₂ containing all‐cis peptide units