ISDA: 1USH

Deposition Date 1998-09-16

Release Date 1999-06-15

Last Version Date 2024-10-16

Entry Detail

PDB ID:

1USH

Keywords:

HYDROLASE

Title:

5'-NUCLEOTIDASE FROM E. COLI

Biological Source:

Source Organism(s):

Escherichia coli (Taxon ID: 83333)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.73 Å

R-Value Free:

0.21

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 41 21 2

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:5'-NUCLEOTIDASE
Gene (Uniprot):ushA
Chain IDs:A
Chain Length:550
Number of Molecules:1
Biological Source:Escherichia coli

UniProt ID:P07024 Pfam ID:PF00149, PF02872 EC:3.1.3.5

Ligand Molecules

CO3

SO4

Primary Citation

X-ray structure of the Escherichia coli periplasmic 5'-nucleotidase containing a dimetal catalytic site.

Knofel, T, Strater, N.Show

Nat.Struct.Biol. 6 448 453 (1999)

PMID: 10331872 DOI: 10.1038/8253

Abstact

The crystal structure of 5'-nucleotidase (5'-NT) from E. coli, also known as UDP-sugar hydrolase, has been determined at 1.7 A resolution. Two zinc ions are present in the active site, which is located in a cleft between two domains. The dimetal center and a catalytic Asp-His dyad are the main players in the catalytic mechanism. Structure-based sequence comparisons show that the structure also provides a model for animal 5'-NTs, which together with other ectonucleotidases terminate the action of nucleotides as extracellular signaling substances in the nervous system.

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Primary Citation of related structures

Abstact

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