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Entry Detail
PDB ID:
3PIU
Keywords:
LYASE
Title:
High-resolution structure of native Malus domestica ACC synthase
Biological Source:
Source Organism:
Malus domestica
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2010-11-08
Release Date:
2010-12-15
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.35 Å
R-Value Free:
0.17
R-Value Work:
0.14
R-Value Observed:
0.14
Space Group:
C 1 2 1
3PIU validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:1-aminocyclopropane-1-carboxylate synthase
Chain IDs:A
Chain Length:435
Number of Molecules:1
Biological Source:Malus domestica
UniProt ID:P37821 Pfam ID:PF00155 EC:4.4.1.14
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
LLP A LYS ?
Ligand Molecules
PLR
Primary Citation
Structural basis for reduced activity of 1-aminocyclopropane-1-carboxylate synthase affected by a mutation linked to andromonoecy.
Febs Lett. 585 111 114 (2011)
PMID: 21075107 DOI: 10.1016/j.febslet.2010.11.013

Abstact

1-aminocyclopropane-1-carboxylate synthase (ACS) is a key enzyme in the biosynthesis of the plant hormone ethylene. Recently, a new biological role for ACS has been found in Cucumis melo where a single point mutation (A57V) of one isoform of the enzyme, causing reduced activity, results in andromonoecious plants. We present here a straightforward structural basis for the reduced activity of the A57V mutant, based on our work on Malus domestica ACS, including a new structure of the unliganded apple enzyme at 1.35Å resolution.

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Primary Citation of related structures
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