The long-term research interests of our lab concern interactions between mammalian proteins and biomembranes or other large assemblies such as viruses. Our current focus is on the lung surfactant proteins A and D (SP-A and SP-D) and their role in innate defense against inhaled pathogens such as seasonal and pandemic strains of influenza A virus (IAV). These proteins are C-type lectins that can recognize sugars and other signature components on microbial surfaces, and can initiate events leading to pathogen neutralization. In our lab, we use x-ray crystallography, molecular modeling, and various biochemical and biophysical methods to understand the nature of these interactions at the highest resolution possible.
- Massachusetts Institute of Technology, PhD
- Brooklyn College, BS
- Published on 5/16/2018
van Eijk M, Rynkiewicz MJ, Khatri K, Leymarie N, Zaia J, White MR, Hartshorn KL, Cafarella TR, van Die I, Hessing M, Seaton BA, Haagsman HP. Lectin-mediated binding and sialoglycans of porcine surfactant protein D synergistically neutralize influenza A virus. J Biol Chem. 2018 07 06; 293(27):10646-10662. PMID: 29769321.
- Published on 7/31/2017
Rynkiewicz MJ, Wu H, Cafarella TR, Nikolaidis NM, Head JF, Seaton BA, McCormack FX. Differential Ligand Binding Specificities of the Pulmonary Collectins Are Determined by the Conformational Freedom of a Surface Loop. Biochemistry. 2017 Aug 08; 56(31):4095-4105. PMID: 28719181.
- Published on 6/21/2016
Goh BC, Wu H, Rynkiewicz MJ, Schulten K, Seaton BA, McCormack FX. Elucidation of Lipid Binding Sites on Lung Surfactant Protein A Using X-ray Crystallography, Mutagenesis, and Molecular Dynamics Simulations. Biochemistry. 2016 Jul 05; 55(26):3692-701. PMID: 27324153.
- Published on 8/26/2015
Tripathi S, Wang G, White M, Rynkiewicz M, Seaton B, Hartshorn K. Identifying the Critical Domain of LL-37 Involved in Mediating Neutrophil Activation in the Presence of Influenza Virus: Functional and Structural Analysis. PLoS One. 2015; 10(8):e0133454. PMID: 26308522.
- Published on 8/1/2014
Lu Z, Rynkiewicz MJ, Yang CY, Madico G, Perkins HM, Roche MI, Seaton BA, Sharon J. Functional and structural characterization of Francisella tularensis O-antigen antibodies at the low end of antigen reactivity. Monoclon Antib Immunodiagn Immunother. 2014 Aug; 33(4):235-45. PMID: 25171003.
- Published on 6/26/2014
Lu Z, Rynkiewicz MJ, Madico G, Li S, Yang CY, Perkins HM, Sompuram SR, Kodela V, Liu T, Morris T, Wang D, Roche MI, Seaton BA, Sharon J. B-cell epitopes in GroEL of Francisella tularensis. PLoS One. 2014; 9(6):e99847. PMID: 24968190.
- Published on 4/4/2014
Nikolaidis NM, White MR, Allen K, Tripathi S, Qi L, McDonald B, Taubenberger J, Seaton BA, McCormack FX, Crouch EC, Hartshorn KL. Mutations flanking the carbohydrate binding site of surfactant protein D confer antiviral activity for pandemic influenza A viruses. Am J Physiol Lung Cell Mol Physiol. 2014 Jun 1; 306(11):L1036-44. PMID: 24705721.
- Published on 11/13/2013
Goh BC, Rynkiewicz MJ, Cafarella TR, White MR, Hartshorn KL, Allen K, Crouch EC, Calin O, Seeberger PH, Schulten K, Seaton BA. Molecular mechanisms of inhibition of influenza by surfactant protein D revealed by large-scale molecular dynamics simulation. Biochemistry. 2013 Nov 26; 52(47):8527-38. PMID: 24224757.
- Published on 11/1/2013
Lu Z, Rynkiewicz MJ, Yang CY, Madico G, Perkins HM, Wang Q, Costello CE, Zaia J, Seaton BA, Sharon J. The binding sites of monoclonal antibodies to the non-reducing end of Francisella tularensis O-antigen accommodate mainly the terminal saccharide. Immunology. 2013 Nov; 140(3):374-89. PMID: 23844703.
- Published on 7/2/2012
Rynkiewicz MJ, Lu Z, Hui JH, Sharon J, Seaton BA. Structural analysis of a protective epitope of the Francisella tularensis O-polysaccharide. Biochemistry. 2012 Jul 17; 51(28):5684-94. PMID: 22747335.
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