A Proposal for a Consolidated Structural Model of the CagY Protein of Helicobacter pylori Article Swipe
Mario Ángel López-Luis
,
Eva Elda Soriano-Pérez
,
José Carlos Parada-Fabián
,
Javier Torres
,
Rogelio Maldonado-Rodrı́guez
,
Alfonso Méndez-Tenorio
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/ijms242316781
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/ijms242316781
CagY is the largest and most complex protein from Helicobacter pylori’s (Hp) type IV secretion system (T4SS), playing a critical role in the modulation of gastric inflammation and risk for gastric cancer. CagY spans from the inner to the outer membrane, forming a channel through which Hp molecules are injected into human gastric cells. Yet, a tridimensional structure has been reported for only short segments of the protein. This intricate protein was modeled using different approaches, including homology modeling, ab initio, and deep learning techniques. The challengingly long middle repeat region (MRR) was modeled using deep learning and optimized using equilibrium molecular dynamics. The previously modeled segments were assembled into a 1595 aa chain and a 14-chain CagY multimer structure was assembled by structural alignment. The final structure correlated with published structures and allowed to show how the multimer may form the T4SS channel through which CagA and other molecules are translocated to gastric cells. The model confirmed that MRR, the most polymorphic and complex region of CagY, presents numerous cysteine residues forming disulfide bonds that stabilize the protein and suggest this domain may function as a contractile region playing an essential role in the modulating activity of CagY on tissue inflammation.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/ijms242316781
- https://www.mdpi.com/1422-0067/24/23/16781/pdf?version=1700993915
- OA Status
- gold
- Cited By
- 2
- References
- 76
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4389056852
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Raw OpenAlex JSON
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https://openalex.org/W4389056852Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/ijms242316781Digital Object Identifier
- Title
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A Proposal for a Consolidated Structural Model of the CagY Protein of Helicobacter pyloriWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-11-26Full publication date if available
- Authors
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Mario Ángel López-Luis, Eva Elda Soriano-Pérez, José Carlos Parada-Fabián, Javier Torres, Rogelio Maldonado-Rodrı́guez, Alfonso Méndez-TenorioList of authors in order
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https://doi.org/10.3390/ijms242316781Publisher landing page
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https://www.mdpi.com/1422-0067/24/23/16781/pdf?version=1700993915Direct link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://www.mdpi.com/1422-0067/24/23/16781/pdf?version=1700993915Direct OA link when available
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Helicobacter pylori, Computational biology, Microbiology, Biology, GeneticsTop concepts (fields/topics) attached by OpenAlex
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2Total citation count in OpenAlex
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2025: 1, 2024: 1Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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