6T3T image
Entry Detail
PDB ID:
6T3T
Keywords:
Title:
Structure of the 4-hydroxy-tetrahydrodipicolinate synthase from the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV
Biological Source:
PDB Version:
Deposition Date:
2019-10-11
Release Date:
2020-05-06
Method Details:
Experimental Method:
Resolution:
2.10 Å
R-Value Free:
0.23
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 42
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:4-hydroxy-tetrahydrodipicolinate synthase
Chain IDs:A (auth: B), B (auth: A), C, D
Chain Length:301
Number of Molecules:4
Biological Source:Methylacidiphilum fumariolicum SolV
Ligand Molecules
Primary Citation
Structure of the 4-hydroxy-tetrahydrodipicolinate synthase from the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV and the phylogeny of the aminotransferase pathway.
Acta Crystallogr.,Sect.F 76 199 208 (2020)
PMID: 32356521 DOI: 10.1107/S2053230X20005294

Abstact

The enzyme 4-hydroxy-tetrahydrodipicolinate synthase (DapA) is involved in the production of lysine and precursor molecules for peptidoglycan synthesis. In a multistep reaction, DapA converts pyruvate and L-aspartate-4-semialdehyde to 4-hydroxy-2,3,4,5-tetrahydrodipicolinic acid. In many organisms, lysine binds allosterically to DapA, causing negative feedback, thus making the enzyme an important regulatory component of the pathway. Here, the 2.1 Å resolution crystal structure of DapA from the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV is reported. The enzyme crystallized as a contaminant of a protein preparation from native biomass. Genome analysis reveals that M. fumariolicum SolV utilizes the recently discovered aminotransferase pathway for lysine biosynthesis. Phylogenetic analyses of the genes involved in this pathway shed new light on the distribution of this pathway across the three domains of life.

Legend

Protein

Chemical

Disease

Primary Citation of related structures