Cloned (Comment) | Organism |
---|---|
phylogenetic analysis, recombinant expression in Escherichia coli | Chloroflexus aurantiacus |
Crystallization (Comment) | Organism |
---|---|
purified recombinant enzyme, alone or in complex with substrate propionyl-CoA, inhibitor oxalate, and magnesium ions, pH 5.5, X-ray diffraction structure determination and analysis at 2.0 A resolution, molecular replacement modeling | Chloroflexus aurantiacus |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
oxalate | - |
Chloroflexus aurantiacus |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | required, binding structure, coordination by Glu157 and Asp184, overview | Chloroflexus aurantiacus |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
38400 | - |
6 * 38400, about, sequence calculation, dimer of trimers, elaborations on the canonical beta8/alpha8 TIM barrel fold and form hexameric assemblies. The trimeric assembly itself is a prerequisite for the catalytic activity | Chloroflexus aurantiacus |
228000 | - |
recombinant enzyme, gel filtration | Chloroflexus aurantiacus |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
(S)-citramalyl-CoA | Chloroflexus aurantiacus | - |
acetyl-CoA + pyruvate | - |
r | |
additional information | Chloroflexus aurantiacus | the enzyme also performs reactions of EC 4.1.3.24, catalyzing reversible cleavage of (S)-malyl-CoA to acetyl-CoA and glyoxylate, or reversible synthesis of (2R,3S)-2-methylmalyl-CoA from propanoyl-CoA and glyoxylate. Malyl-CoA lyase is a promiscuous carbon-carbon bond lyase that catalyzes the reversible cleavage of structurally related CoA thioesters | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Chloroflexus aurantiacus | S5N020 | - |
- |
Chloroflexus aurantiacus OK-70-fl / DSM 636 | S5N020 | - |
- |
Purification (Comment) | Organism |
---|---|
recombinant enzyme from Escherichia coli | Chloroflexus aurantiacus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
(S)-citramalyl-CoA | - |
Chloroflexus aurantiacus | acetyl-CoA + pyruvate | - |
r | |
(S)-citramalyl-CoA | the cleavage direction is preferred | Chloroflexus aurantiacus | acetyl-CoA + pyruvate | - |
r | |
additional information | the enzyme also performs reactions of EC 4.1.3.24, catalyzing reversible cleavage of (S)-malyl-CoA to acetyl-CoA and glyoxylate, or reversible synthesis of (2R,3S)-2-methylmalyl-CoA from propanoyl-CoA and glyoxylate. Malyl-CoA lyase is a promiscuous carbon-carbon bond lyase that catalyzes the reversible cleavage of structurally related CoA thioesters | Chloroflexus aurantiacus | ? | - |
? | |
additional information | the enzyme also performs reactions of EC 4.1.3.24, catalyzing reversible cleavage of (S)-malyl-CoA to acetyl-CoA and glyoxylate, or reversible synthesis of (2R,3S)-2-methylmalyl-CoA from propanoyl-CoA and glyoxylate | Chloroflexus aurantiacus | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
hexamer | 6 * 38400, about, sequence calculation, dimer of trimers, elaborations on the canonical beta8/alpha8 TIM barrel fold and form hexameric assemblies. The trimeric assembly itself is a prerequisite for the catalytic activity | Chloroflexus aurantiacus |
Synonyms | Comment | Organism |
---|---|---|
(3S)-3-carboxy-3-hydroxypropanoyl-CoA glyoxylate-lyase | UniProt | Chloroflexus aurantiacus |
(3S)-citramalyl-CoA pyruvate-lyase | UniProt | Chloroflexus aurantiacus |
(S)-citramalyl-CoA lyase | UniProt | Chloroflexus aurantiacus |
malyl-CoA/beta-methylmalyl-CoA/citramalyl-CoA lyase | UniProt | Chloroflexus aurantiacus |
MCL | - |
Chloroflexus aurantiacus |
MCLC | - |
Chloroflexus aurantiacus |
General Information | Comment | Organism |
---|---|---|
evolution | the enzyme belongs to the large superfamily of CitE-like enzymes, which includes the beta-subunit of citrate lyase (CitE), malyl-CoA thioesterases and other enzymes of unknown physiological function. The CitE-like enzyme superfamily also bears sequence and structural resemblance to the malate synthases. All of these different enzymes share highly conserved catalytic residues, although they catalyze distinctly different reactions: C-C bond formation and cleavage, thioester hydrolysis, or both (the malate synthases) | Chloroflexus aurantiacus |
metabolism | the enzyme catalyzes three different steps in the 3-hydroxypropionate bi-cycle for autotrophic CO2 fixation, the tri-functionality of the MCLC underscores its key role for this pathway | Chloroflexus aurantiacus |
additional information | upon ligand binding, changes in the C-terminal domains of the enzyme results in closing of the active site, with the C-terminal domain of one monomer forming a lid over and contributing side chains to the active site of the adjacent monomer, overview | Chloroflexus aurantiacus |
physiological function | the enzyme plays a crucial, multifunctional role in the 3-hydroxypropionate bi-cycle for autotrophic CO2 fixation in Chloroflexus aurantiacus | Chloroflexus aurantiacus |