ISDA: 4L55

Deposition Date 2013-06-10

Release Date 2014-01-29

Last Version Date 2024-10-09

Entry Detail

PDB ID:

4L55

Keywords:

HYDROLASE

Title:

X-ray structure of the adduct between bovine pancreatic ribonuclease and AziRu

Biological Source:

Source Organism:

Bos taurus (Taxon ID: 9913)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.65 Å

R-Value Free:

0.24

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

C 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Ribonuclease pancreatic
Gene (Uniprot):RNASE1
Chain IDs:A, B
Chain Length:124
Number of Molecules:2
Biological Source:Bos taurus

UniProt ID:P61823 Pfam ID:PF00074 EC:4.6.1.18

Ligand Molecules

Primary Citation

Investigating the ruthenium metalation of proteins: X-ray structure and Raman microspectroscopy of the complex between RNase A and AziRu.

Vergara, A, Russo Krauss, I, Montesarchio, D, Paduano, L, Merlino, A.Show

Inorg.Chem. 52 10714 10716 (2013)

PMID: 24093479 DOI: 10.1021/ic401494v

Abstact

A Raman-assisted crystallographic study on the adduct between AziRu, a Ru(III) complex with high antiproliferative activity, and RNase A is presented. The protein structure is not perturbed significantly by the Ru label. The metal coordinates to ND atoms of His105 or of His119 imidazole rings, losing all of its original ligands but retaining octahedral, although distorted, coordination geometry. The AziRu binding inactivates the enzyme, suggesting that its antitumor action can be exerted by a mechanism of competitive inhibition.

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