### Abstract

The solution conformation of the cardiac stimulatory sea anemone polypeptide anthopleurin-A has been characterised using distance geometry and restrained molecular dynamics calculations. A set of 253 approximate interproton distance restraints and 14 peptide backbone torsion angle restraints derived from two-dimensional ^{1}H-NMR spectra at 500 MHz were used as input for these calculations. 13 structures generated by either metric matrix or variable target function distance geometry calculations were refined using energy minimisation and restrained molecular dynamics. The resulting structures contain a region of twisted antiparellel β-sheet to which two separate regions of unordered chain are linked by three disulphide bonds. Two loops, one including Pro-41 and the other encompassing residues 10-18, are poorly defined by the NOE data.

Original language | English |
---|---|

Pages (from-to) | 266-270 |

Number of pages | 5 |

Journal | FEBS Letters |

Volume | 239 |

Issue number | 2 |

DOIs | |

Publication status | Published - 7 Nov 1988 |

Externally published | Yes |

### Keywords

- H-NMR
- Distance geometry
- Molecular dynamics
- NOE
- Polypeptide
- Three-dimensional structure

### Cite this

*FEBS Letters*,

*239*(2), 266-270. https://doi.org/10.1016/0014-5793(88)80931-1

}

*FEBS Letters*, vol. 239, no. 2, pp. 266-270. https://doi.org/10.1016/0014-5793(88)80931-1

**Backbone folding of the polypeptide cardiac stimulant anthopleurin-A determined by nuclear magnetic resonance, distance geometry and molecular dynamics.** / Torda, Andrew E.; Mabbutt, Bridget C.; van Gunsteren, Wilfred F.; Norton, Raymond S.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Backbone folding of the polypeptide cardiac stimulant anthopleurin-A determined by nuclear magnetic resonance, distance geometry and molecular dynamics

AU - Torda, Andrew E.

AU - Mabbutt, Bridget C.

AU - van Gunsteren, Wilfred F.

AU - Norton, Raymond S.

PY - 1988/11/7

Y1 - 1988/11/7

N2 - The solution conformation of the cardiac stimulatory sea anemone polypeptide anthopleurin-A has been characterised using distance geometry and restrained molecular dynamics calculations. A set of 253 approximate interproton distance restraints and 14 peptide backbone torsion angle restraints derived from two-dimensional 1H-NMR spectra at 500 MHz were used as input for these calculations. 13 structures generated by either metric matrix or variable target function distance geometry calculations were refined using energy minimisation and restrained molecular dynamics. The resulting structures contain a region of twisted antiparellel β-sheet to which two separate regions of unordered chain are linked by three disulphide bonds. Two loops, one including Pro-41 and the other encompassing residues 10-18, are poorly defined by the NOE data.

AB - The solution conformation of the cardiac stimulatory sea anemone polypeptide anthopleurin-A has been characterised using distance geometry and restrained molecular dynamics calculations. A set of 253 approximate interproton distance restraints and 14 peptide backbone torsion angle restraints derived from two-dimensional 1H-NMR spectra at 500 MHz were used as input for these calculations. 13 structures generated by either metric matrix or variable target function distance geometry calculations were refined using energy minimisation and restrained molecular dynamics. The resulting structures contain a region of twisted antiparellel β-sheet to which two separate regions of unordered chain are linked by three disulphide bonds. Two loops, one including Pro-41 and the other encompassing residues 10-18, are poorly defined by the NOE data.

KW - H-NMR

KW - Distance geometry

KW - Molecular dynamics

KW - NOE

KW - Polypeptide

KW - Three-dimensional structure

UR - http://www.scopus.com/inward/record.url?scp=0023698034&partnerID=8YFLogxK

U2 - 10.1016/0014-5793(88)80931-1

DO - 10.1016/0014-5793(88)80931-1

M3 - Article

C2 - 3181430

AN - SCOPUS:0023698034

VL - 239

SP - 266

EP - 270

JO - FEBS Letters

JF - FEBS Letters

SN - 0014-5793

IS - 2

ER -