Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod
Abstract The 1 H and 13 C NMR spectra of a 14‐residue antifreeze glycopeptide from Antarctic cod ( Tetramatornus horchgrevinki ) containing two proline residues have been assigned. 13 C NMR relaxation experiments indicate motional anisotropy of the peptide, with a tumbling time in water at 5 °C of 3...
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crwiley:10.1002/pro.5560070709 2024-09-09T19:10:13+00:00 Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod Lane, Andrew N. Hays, Lisa M. Crowe, Lois M. Crowe, John H. Feeney, Robert E. 1998 http://dx.doi.org/10.1002/pro.5560070709 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fpro.5560070709 https://onlinelibrary.wiley.com/doi/pdf/10.1002/pro.5560070709 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Protein Science volume 7, issue 7, page 1555-1563 ISSN 0961-8368 1469-896X journal-article 1998 crwiley https://doi.org/10.1002/pro.5560070709 2024-06-20T04:25:28Z Abstract The 1 H and 13 C NMR spectra of a 14‐residue antifreeze glycopeptide from Antarctic cod ( Tetramatornus horchgrevinki ) containing two proline residues have been assigned. 13 C NMR relaxation experiments indicate motional anisotropy of the peptide, with a tumbling time in water at 5 °C of 3‐4 ns. The relaxation data and lack of long‐range NOEs are consistent with a linear peptide undergoing significant segmental motion. However, extreme values of some coupling constants and strong sequential NOEs indicate regions of local order, which are most evident at the two ATPA subsequences. Similar spectroscopic properties were observed in the 16‐residue analogue containing an Arg‐Ala dipeptide added to the C‐terminus. Molecular modeling also showed no evidence of long‐range order, but the two ATPA subsequences were relatively well determined by the experimental data. These motifs were quite distinct from helical structures or β turns commonly found in proteins, but rather resemble sections of an extended polyproline helix. Thus, the NMR data provide a description of the local order, which is of relevance to the mechanism of action of the antifreeze activity of the antifreeze glycopeptides as well as their ability to protect cells during hypothermic storage. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic Protein Science 7 7 1555 1563 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The 1 H and 13 C NMR spectra of a 14‐residue antifreeze glycopeptide from Antarctic cod ( Tetramatornus horchgrevinki ) containing two proline residues have been assigned. 13 C NMR relaxation experiments indicate motional anisotropy of the peptide, with a tumbling time in water at 5 °C of 3‐4 ns. The relaxation data and lack of long‐range NOEs are consistent with a linear peptide undergoing significant segmental motion. However, extreme values of some coupling constants and strong sequential NOEs indicate regions of local order, which are most evident at the two ATPA subsequences. Similar spectroscopic properties were observed in the 16‐residue analogue containing an Arg‐Ala dipeptide added to the C‐terminus. Molecular modeling also showed no evidence of long‐range order, but the two ATPA subsequences were relatively well determined by the experimental data. These motifs were quite distinct from helical structures or β turns commonly found in proteins, but rather resemble sections of an extended polyproline helix. Thus, the NMR data provide a description of the local order, which is of relevance to the mechanism of action of the antifreeze activity of the antifreeze glycopeptides as well as their ability to protect cells during hypothermic storage. |
format |
Article in Journal/Newspaper |
author |
Lane, Andrew N. Hays, Lisa M. Crowe, Lois M. Crowe, John H. Feeney, Robert E. |
spellingShingle |
Lane, Andrew N. Hays, Lisa M. Crowe, Lois M. Crowe, John H. Feeney, Robert E. Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
author_facet |
Lane, Andrew N. Hays, Lisa M. Crowe, Lois M. Crowe, John H. Feeney, Robert E. |
author_sort |
Lane, Andrew N. |
title |
Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
title_short |
Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
title_full |
Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
title_fullStr |
Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
title_full_unstemmed |
Conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
title_sort |
conformational and dynamic properties of a 14 residue antifreeze glycopeptide from antarctic cod |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1002/pro.5560070709 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fpro.5560070709 https://onlinelibrary.wiley.com/doi/pdf/10.1002/pro.5560070709 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Protein Science volume 7, issue 7, page 1555-1563 ISSN 0961-8368 1469-896X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/pro.5560070709 |
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Protein Science |
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7 |
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7 |
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1555 |
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1563 |
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1809824879111831552 |