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Literature DB >> 1547322

Simulation of coherent energy transfer in an alpha-helical peptide by Fermi resonance.

Abstract

A mechanism by which NH stretching quanta are coherently transported along a chain of hydrogen bonded peptide groups is demonstrated by classical simulation of a section of the alpha-helical peptide poly(L-alanine). Vibrational motion takes place on a complex energy surface constructed from earlier ab initio and empirical surfaces. A speculative hypothesis of the biological role of this mechanism is presented, and the critical parameters governing the dynamics are identified and discussed.

Entities: Chemical

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Year: 1992 PMID： 1547322 PMCID： PMC1260249 DOI： 10.1016/S0006-3495(92)81839-8

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

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References

21 in total

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Authors: K Maruyama; D M Clarke; J Fujii; G Inesi; T W Loo; D H MacLennan
Journal: J Biol Chem Date: 1989-08-05 Impact factor: 5.157

Simulation of coherent energy transfer in an alpha-helical peptide by Fermi resonance.

1. Do Davydov solitons exist at 300 K?

2. Location of high affinity Ca2+-binding sites within the predicted transmembrane domain of the sarcoplasmic reticulum Ca2+-ATPase.

Review 3. The predicted secondary structures of the nucleotide-binding sites of six cation-transporting ATPases lead to a probable tertiary fold.

4. Location of high-affinity metal binding sites in the profile structure of the Ca+2-ATPase in the sarcoplasmic reticulum by resonance x-ray diffraction.

5. Two Ca2+ ATPase genes: homologies and mechanistic implications of deduced amino acid sequences.

6. Vibrational analysis of peptides, polypeptides, and proteins. 3. alpha-Poly(L-alanine).

7. Refinement of bond angles of an alpha-helix.

8. Model for the structure of bacteriorhodopsin based on high-resolution electron cryo-microscopy.

9. The alpha-helix dipole and the properties of proteins.

10. Functional consequences of alterations to amino acids located in the catalytic center (isoleucine 348 to threonine 357) and nucleotide-binding domain of the Ca2+-ATPase of sarcoplasmic reticulum.