» Articles » PMID: 19284989

Crystal Structures of Respiratory Pathogen Neuraminidases

Overview
Publisher Elsevier
Specialty Biochemistry
Date 2009 Mar 17
PMID 19284989
Citations 18
Authors
Affiliations
Soon will be listed here.
Abstract

Currently there is pressing need to develop novel therapeutic agents for the treatment of infections by the human respiratory pathogens Pseudomonas aeruginosa and Streptococcus pneumoniae. The neuraminidases of these pathogens are important for host colonization in animal models of infection and are attractive targets for drug discovery. To aid in the development of inhibitors against these neuraminidases, we have determined the crystal structures of the P. aeruginosa enzyme NanPs and S. pneumoniae enzyme NanA at 1.6 and 1.7A resolution, respectively. In situ proteolysis with trypsin was essential for the crystallization of our recombinant NanA. The active site regions of the two enzymes are strikingly different. NanA contains a deep pocket that is similar to that in canonical neuraminidases, while the NanPs active site is much more open. The comparative studies suggest that NanPs may not be a classical neuraminidase, and may have distinct natural substrates and physiological functions. This work represents an important step in the development of drugs to prevent respiratory tract colonization by these two pathogens.

Citing Articles

Mutant glycosidases for labeling sialoglycans with high specificity and affinity.

Liang S, Tang Q, Guo X, Li Z, Guo Y, Chang J Nat Commun. 2025; 16(1):1427.

PMID: 39915445 PMC: 11802738. DOI: 10.1038/s41467-025-56629-9.


Impedimetric Characterization of NanA Structural Domains Activity on Sialoside-Containing Interfaces.

Alshanski I, Toraskar S, Mor K, Daligault F, Jain P, Grandjean C Langmuir. 2024; 40(42):22152-22158.

PMID: 39376038 PMC: 11500401. DOI: 10.1021/acs.langmuir.4c02620.


Functional and structural analyses reveal that a dual domain sialidase protects bacteria from complement killing through desialylation of complement factors.

Clark N, Pham C, Kurniyati K, Sze C, Coleman L, Fu Q PLoS Pathog. 2023; 19(9):e1011674.

PMID: 37747935 PMC: 10553830. DOI: 10.1371/journal.ppat.1011674.


Gut Microbial Sialidases and Their Role in the Metabolism of Human Milk Sialylated Glycans.

Munoz-Provencio D, Yebra M Int J Mol Sci. 2023; 24(12).

PMID: 37373145 PMC: 10298468. DOI: 10.3390/ijms24129994.


Structural and enzymatic characterization of the sialidase SiaPG from Porphyromonas gingivalis.

Dong W, Jiang Y, Zhu Z, Zhu J, Li Y, Xia R Acta Crystallogr F Struct Biol Commun. 2023; 79(Pt 4):87-94.

PMID: 36995120 PMC: 10071834. DOI: 10.1107/S2053230X23001735.


References
1.
Xu G, Li X, Andrew P, Taylor G . Structure of the catalytic domain of Streptococcus pneumoniae sialidase NanA. Acta Crystallogr Sect F Struct Biol Cryst Commun. 2008; 64(Pt 9):772-5. PMC: 2531273. DOI: 10.1107/S1744309108024044. View

2.
Crennell S, Garman E, Philippon C, Vasella A, Laver W, Vimr E . The structures of Salmonella typhimurium LT2 neuraminidase and its complexes with three inhibitors at high resolution. J Mol Biol. 1996; 259(2):264-80. DOI: 10.1006/jmbi.1996.0318. View

3.
Brunger A, Adams P, Clore G, DeLano W, Gros P, Grosse-Kunstleve R . Crystallography & NMR system: A new software suite for macromolecular structure determination. Acta Crystallogr D Biol Crystallogr. 1998; 54(Pt 5):905-21. DOI: 10.1107/s0907444998003254. View

4.
Otwinowski Z, Minor W . Processing of X-ray diffraction data collected in oscillation mode. Methods Enzymol. 1997; 276:307-26. DOI: 10.1016/S0076-6879(97)76066-X. View

5.
Roggentin P, Schauer R, Hoyer L, Vimr E . The sialidase superfamily and its spread by horizontal gene transfer. Mol Microbiol. 1993; 9(5):915-21. DOI: 10.1111/j.1365-2958.1993.tb01221.x. View