In silico Analysis and Modeling of ACP-MIP–PilQ Chimeric Antigen from Neisseria meningitidis Serogroup B
Background: Neisseria meningitidis, a life-threatening human pathogen with the potential to cause large epidemics, can be isolated from the nasopharynx of 5–15% of adults. The aim of the current study was to evaluate biophysical and biochemical properties and immunological aspects of chimeric acyl-c...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Varastegan Institute for Medical Sciences
2015-10-01
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| Series: | Reports of Biochemistry and Molecular Biology |
| Subjects: | |
| Online Access: | http://rbmb.net/article-1-71-en.pdf |
| Summary: | Background: Neisseria meningitidis, a life-threatening human pathogen with the potential to cause large epidemics, can be isolated from the nasopharynx of 5–15% of adults. The aim of the current study was to evaluate biophysical and biochemical properties and immunological aspects of chimeric acyl-carrier protein-macrophage infectivity potentiator protein-type IV pilus biogenesis protein antigen (ACP-MIP-PilQ) from N. meningitidis serogroup B strain.
Methods: Biochemical properties and multiple alignments were predicted by appropriate web servers. Secondary molecular structures were predicted based on Chou and Fasman, Garnier-Osguthorpe-Robson, and Neural Network methods. Tertiary modeling elucidated conformational properties of the chimeric protein. Proteasome cleavage and transporter associated with antigen processing (TAP) binding sites, and T- and B-cell antigenic epitopes, were predicted using bioinformatic web servers.
Results: Based on our in silico and immunoinformatics analyses, the ACP-MIP-PilQ protein (AMP) can induce high-level cross-strain bactericidal activity. In addition, several immune proteasomal cleavage sites were detected. The 22 epitopes associated with MHC class I and class II (DR) alleles were confirmed in the AMP. Thirty linear B-cell epitopes as antigenic regions were predicted from the full-length protein.
Conclusion: All predicted properties of the AMP indicate it could be a good candidate for further immunological
in vitro and in vivo studies. |
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| ISSN: | 2322-3480 2322-3480 |