ISDA: 1NP2

Deposition Date 2003-01-16

Release Date 2003-07-15

Last Version Date 2023-10-25

Entry Detail

PDB ID:

1NP2

Keywords:

HYDROLASE

Title:

Crystal structure of thermostable beta-glycosidase from thermophilic eubacterium Thermus nonproteolyticus HG102

Biological Source:

Source Organism:

Thermus nonproteolyticus (Taxon ID: 116039)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.40 Å

R-Value Free:

0.27

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:beta-glycosidase
Chain IDs:A, B
Chain Length:436
Number of Molecules:2
Biological Source:Thermus nonproteolyticus

UniProt ID:Q9L794 Pfam ID:PF00232

Primary Citation

Structural Basis for Thermostability of beta-Glycosidase from the Thermophilic Eubacterium Thermus nonproteolyticus HG102.

Wang, X, He, X, Yang, S, An, X, Chang, W, Liang, D, He, X.Y, Wang, X.Q, Yang, S.J, Chang, W.R, Liang, D.C.Show

J.Bacteriol. 185 4248 4255 (2003)

PMID: 12837801 DOI: 10.1128/JB.185.14.4248-4255.2003

Abstact

The three-dimensional structure of a thermostable beta-glycosidase (Gly(Tn)) from the thermophilic eubacterium Thermus nonproteolyticus HG102 was determined at a resolution of 2.4 A. The core of the structure adopts the (betaalpha)(8) barrel fold. The sequence alignments and the positions of the two Glu residues in the active center indicate that Gly(Tn) belongs to the glycosyl hydrolases of retaining family 1. We have analyzed the structural features of Gly(Tn) related to the thermostability and compared its structure with those of other mesophilic glycosidases from plants, eubacteria, and hyperthermophilic enzymes from archaea. Several possible features contributing to the thermostability of Gly(Tn) were elucidated.

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Abstact

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