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X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5

C-C chemokine receptor 5 (CCR5) is a major co-receptor molecule used by HIV-1 to enter cells. This led to the hypothesis that stimulating an antibody response would block HIV with minimal toxicity. Here, X-ray crystallographic studies of the anti-CCR5 antibody RoAb13 together with two peptides were...

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Autores principales: Govada, Lata, Saridakis, Emmanuel, Kassen, Sean C., Bin-Ramzi, Ahmad, Morgan, Rhodri Marc, Chain, Benjamin, Helliwell, John R., Chayen, Naomi E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8256702/
https://www.ncbi.nlm.nih.gov/pubmed/34258015
http://dx.doi.org/10.1107/S2052252521005340
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author Govada, Lata
Saridakis, Emmanuel
Kassen, Sean C.
Bin-Ramzi, Ahmad
Morgan, Rhodri Marc
Chain, Benjamin
Helliwell, John R.
Chayen, Naomi E.
author_facet Govada, Lata
Saridakis, Emmanuel
Kassen, Sean C.
Bin-Ramzi, Ahmad
Morgan, Rhodri Marc
Chain, Benjamin
Helliwell, John R.
Chayen, Naomi E.
author_sort Govada, Lata
collection PubMed
description C-C chemokine receptor 5 (CCR5) is a major co-receptor molecule used by HIV-1 to enter cells. This led to the hypothesis that stimulating an antibody response would block HIV with minimal toxicity. Here, X-ray crystallographic studies of the anti-CCR5 antibody RoAb13 together with two peptides were undertaken: one peptide is a 31-residue peptide containing the PIYDIN sequence and the other is the PIDYIN peptide alone, where PIYDIN is part of the N-terminal region of CCR5 previously shown to be important for HIV entry. In the presence of the longer peptide (the complete N-terminal domain), difference electron density was observed at a site within a hypervariable CDR3 binding region. In the presence of the shorter core peptide PIYDIN, difference electron density is again observed at this CDR3 site, confirming consistent binding for both peptides. This may be useful in the design of a new biomimetic to stimulate an antibody response to CCR5 in order to block HIV infection.
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spelling pubmed-82567022021-07-12 X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5 Govada, Lata Saridakis, Emmanuel Kassen, Sean C. Bin-Ramzi, Ahmad Morgan, Rhodri Marc Chain, Benjamin Helliwell, John R. Chayen, Naomi E. IUCrJ Research Papers C-C chemokine receptor 5 (CCR5) is a major co-receptor molecule used by HIV-1 to enter cells. This led to the hypothesis that stimulating an antibody response would block HIV with minimal toxicity. Here, X-ray crystallographic studies of the anti-CCR5 antibody RoAb13 together with two peptides were undertaken: one peptide is a 31-residue peptide containing the PIYDIN sequence and the other is the PIDYIN peptide alone, where PIYDIN is part of the N-terminal region of CCR5 previously shown to be important for HIV entry. In the presence of the longer peptide (the complete N-terminal domain), difference electron density was observed at a site within a hypervariable CDR3 binding region. In the presence of the shorter core peptide PIYDIN, difference electron density is again observed at this CDR3 site, confirming consistent binding for both peptides. This may be useful in the design of a new biomimetic to stimulate an antibody response to CCR5 in order to block HIV infection. International Union of Crystallography 2021-07-01 /pmc/articles/PMC8256702/ /pubmed/34258015 http://dx.doi.org/10.1107/S2052252521005340 Text en © Lata Govada et al. 2021 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Govada, Lata
Saridakis, Emmanuel
Kassen, Sean C.
Bin-Ramzi, Ahmad
Morgan, Rhodri Marc
Chain, Benjamin
Helliwell, John R.
Chayen, Naomi E.
X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5
title X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5
title_full X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5
title_fullStr X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5
title_full_unstemmed X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5
title_short X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the N-terminal domain of C-C chemokine receptor 5
title_sort x-ray crystallographic studies of roab13 bound to piydin, a part of the n-terminal domain of c-c chemokine receptor 5
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8256702/
https://www.ncbi.nlm.nih.gov/pubmed/34258015
http://dx.doi.org/10.1107/S2052252521005340
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