View : 72 Download: 0

GTP Preference of D-Glycero-alpha-D-manno-Heptose-1-Phosphate Guanylyltransferase from Yersinia pseudotuberculosis

Title
GTP Preference of D-Glycero-alpha-D-manno-Heptose-1-Phosphate Guanylyltransferase from Yersinia pseudotuberculosis
Authors
Kim, SuwonKim, Mi-SunJo, SeriShin, Dong Hae
Ewha Authors
김수원김미선
SCOPUS Author ID
김수원scopus
Issue Date
2020
Journal Title
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
ISSN
1422-0067JCR Link
Citation
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES vol. 21, no. 1
Keywords
D-glycero-alpha-D-manno-heptose-1-phosphate guanylyltransferase (HddC)Yersinia pseudotuberculosis (YPT)guanosine-5 '-(beta-amino)-diphosphate (GMPPN)guanine specificityantibiotics
Publisher
MDPI
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
D-glycero-alpha-D-manno-heptose-1-phosphate guanylyltransferase (HddC) is the fourth enzyme synthesizing a building component of lipopolysaccharide (LPS) of Gram-negative bacteria. Since HddC is a potential new target to develop antibiotics, the analysis of the structural and functional relationship of the complex structure will lead to a better idea to design inhibitory compounds. X-ray crystallography and biochemical experiments to elucidate the guanine preference were performed based on the multiple sequence alignment. The crystal structure of HddC from Yersinia pseudotuberculosis (YPT) complexed with guanosine 5 '-(beta-amino)-diphosphate (GMPPN) has been determined at 1.55 angstrom resolution. Meanwhile, the mutants revealed their reduced guanine affinity, instead of acquiring noticeable pyrimidine affinity. The complex crystal structure revealed that GMPPN is docked in the catalytic site with the aid of Glu80 positioning on the conserved motif EXXPLGTGGA. In the HddC family, this motif is expected to recruit nucleotides through interacting with bases. The crystal structure shows that oxygen atoms of Glu80 forming two hydrogen bonds play a critical role in interaction with two nitrogen atoms of the guanine base of GMPPN. Interestingly, the binding of GMPPN induced the formation of an oxyanion hole-like conformation on the L(S/A/G)X(S/G) motif and consequently influenced on inducing a conformational shift of the region around Ser55.
DOI
10.3390/ijms21010280
Appears in Collections:
약학대학 > 약학과 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE