2ZAV image
Deposition Date 2007-10-11
Release Date 2007-10-30
Last Version Date 2023-11-01
Entry Detail
PDB ID:
2ZAV
Keywords:
HYDROLASE
Title:
Arginase I (homo sapiens): native and unliganded structure at 1.70 A resolution
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.70 Å
R-Value Free:
0.17
R-Value Work:
0.14
Space Group:
P 3
2ZAV validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Arginase-1
Gene (Uniprot):ARG1
Chain IDs:A, B
Chain Length:322
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P05089 Pfam ID:PF00491 EC:3.5.3.1
Ligand Molecules
MN
Primary Citation
Crystal structure of human arginase I complexed with thiosemicarbazide reveals an unusual thiocarbonyl mu-sulfide ligand in the binuclear manganese cluster
J.Am.Chem.Soc. 129 6388 6389 (2007)
PMID: 17469833 DOI: 10.1021/ja071567j

Abstact

The crystal structure of the human arginase I-thiosemicarbazide complex reveals an unusual thiocarbonyl μ-sulfide ligand in the binuclear manganese cluster. The C=S moiety of thiosemicarbazide bridges Mn2+A and Mn2+B with coordination distances of 2.6 Å and 2.4 Å, respectively. Otherwise, the binding of thiosemicarbazide to human arginase I does not cause any significant structural changes in the active site. The crystal structure of the unliganded enzyme reveals a hydrogen bonded water molecule that could support proton transfer between a μ-water molecule and H141 to regenerate the nucleophilic μ-hydroxide ion in the final step of catalysis.

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Primary Citation of related structures
2PHA