Skip navigation
Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorTapas S.-
dc.contributor.authorKumar Patel G.-
dc.contributor.authorDhindwal S.-
dc.contributor.authorTomar, Shailly-
dc.identifier.citationJournal of Molecular Modeling(2011), 17(4): 621-631-
dc.description.abstractThe shikimate pathway is involved in production of aromatic amino acids in microorganisms and plants. The enzymes of this biosynthetic pathway are a potential target for the design of antimicrobial compounds and herbicides. 3-deoxy-D-arabinoheptulosonate-7-phosphate synthase (DAHPS) catalyzes the first step of the pathway. The gene encoding DAHPS was cloned and sequenced from Pseudomonas fragi, the bacterium responsible for spoilage of milk, dairy products and meat. Amino acid sequence deduced from the nucleotide sequence revealed that P. fragi DAHPS (Pf-DAHPS) consists of 448 amino acids with calculated molecular weight of ?50 kDa and isoelectric point of 5.81. Primary sequence analysis of Pf-DAHPS shows that it has more than 84% identity with DAHPS of other Pseudomonas species, 46% identity with Mycobacterium tuberculosis DAHPS (Mt-DAHPS), the type II DAHPS and less than 11% sequence identity with the type I DAHPS. The three-dimensional structure of Pf-DAHPS was predicted by homology modeling based on the crystal structure of Mt-DAHPS. Pf-DAHPS model contains a (?/?)8 TIM barrel structure. Sequence alignment, phylogenetic analysis and 3D structure model classifies Pf-DAHPS as a type II DAHPS. Sequence analysis revealed the presence of DAHPS signature motif DxxHxN in Pf-DAHPS. Highly conserved sequence motif RxxxxxxKPRT(S/T) and xGxR present in type II DAHPS were also identified in Pf-DAHPS sequence. High sequence homology of DAHPS within Pseudomonas species points to the option of designing a broad spectrum drug for the genus. Pf-DAHPS 3D model provides molecular insights that may be beneficial in rationale inhibitor design for developing effective food preservative against P. fragi. © 2010 Springer-Verlag.-
dc.relation.ispartofJournal of Molecular Modeling-
dc.subject3-deoxy-D-arabinoheptulosonate-7-phosphate synthase-
dc.subjectHomology modeling-
dc.subjectPseudomonas fragi-
dc.titleIn Silico sequence analysis and molecular modeling of the three-dimensional structure of DAHP synthase from Pseudomonas fragi-
dc.affiliationTapas, S., Department of Biotechnology, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India-
dc.affiliationKumar Patel, G., Department of Biotechnology, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India-
dc.affiliationDhindwal, S., Department of Bio-
dc.description.correspondingauthorTomar, S.; Department of Biotechnology, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India; email:
Appears in Collections:Journal Publications [BT]

Files in This Item:
There are no files associated with this item.
Show simple item record

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