ISDA

Entry Detail

PDB ID:

1M4N

Keywords:

LYASE

Title:

CRYSTAL STRUCTURE OF APPLE ACC SYNTHASE IN COMPLEX WITH [2-(AMINO-OXY)ETHYL](5'-DEOXYADENOSIN-5'-YL)(METHYL)SULFONIUM

Biological Source:

Source Organism:

Malus x domestica

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2002-07-03

Release Date:

2003-04-22

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.01 Å

R-Value Free:

0.23

R-Value Work:

0.19

Space Group:

C 1 2 1

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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 x domestica

UniProt ID:P37821 Pfam ID:PF00155 EC:4.4.1.14

Ligand Molecules

AAD

MES

PLP

Primary Citation

Structure of 1-aminocyclopropane-1-carboxylate synthase in complex with an amino-oxy analogue of the substrate: implications for substrate binding.

Capitani, G, Eliot, A.C, Gut, H, Khomutov, R.M, Kirsch, J.F, Grutter, M.G.Show

BIOCHEM.BIOPHYS.ACTA PROTEINS & PROTEOMICS 1647 55 60 (2003)

PMID: 12686108 DOI: 10.1016/S1570-9639(03)00049-9

Abstact

The crystal structure of 1-aminocyclopropane-1-carboxylate (ACC) synthase in complex with the substrate analogue [2-(amino-oxy)ethyl](5'-deoxyadenosin-5'-yl)(methyl)sulfonium (AMA) was determined at 2.01-A resolution. The crystallographic results show that a covalent adduct (oxime) is formed between AMA (an amino-oxy analogue of the natural substrate S-adenosyl-L-methionine (SAM)) and the pyridoxal 5'-phosphate (PLP) cofactor of ACC synthase. The oxime formation is supported by spectroscopic data. The ACC synthase-AMA structure provides reliable and detailed information on the binding mode of the natural substrate of ACC synthase and complements previous structural and functional work on this enzyme.

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Primary Citation of related structures