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Literature summary for 2.3.1.191 extracted from
- Raetz, C.R.; Anderson, M.S.: The firA gene of Escherichia coli encodes UDP-3-O-(R-3-hydroxymyristoyl)-glucosamine N-acyltransferase. The third step of endotoxin biosynthesis (1993), J. Biol. Chem., 268, 19866-19874.
Cloned(Commentary)
| Cloned (Comment) | Organism |
|---|---|
| when the wild-type firA gene is cloned into a T7-based expression vector, N-acyltransferase specific activity increases almost 360fold relative to wild-type extracts | Escherichia coli |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.0013 | - |
UDP-3-O-((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine | pH 8.0, 30°C | Escherichia coli |  |
| 0.0019 | - |
(3R)-3-hydroxymyristoyl-[acyl-carrier protein] | pH 8.0, 30°C | Escherichia coli | |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| (3R)-3-hydroxymyristoyl-[acyl-carrier protein] + UDP-3-O-((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine | Escherichia coli | since only (R)-3-hydroxymyristate is found at the 2,3,2, and 3 positions of Escherichia coli lipid A, it is reassuring that both Escherichia coli acyltransferases display extraordinary specificity for (R)-3-hydroxymyristoyl-[acyl-carrier protein] | UDP-2,3-bis((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine + holo-[acyl-carrier protein] | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Escherichia coli | - |
- |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| partial | Escherichia coli |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| (3R)-3-hydroxymyristoyl-[acyl-carrier protein] + UDP-3-O-((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine | since only (R)-3-hydroxymyristate is found at the 2,3,2, and 3 positions of Escherichia coli lipid A, it is reassuring that both Escherichia coli acyltransferases display extraordinary specificity for (R)-3-hydroxymyristoyl-[acyl-carrier protein] | Escherichia coli | UDP-2,3-bis((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine + holo-[acyl-carrier protein] | - |
? | |
| (3R)-3-hydroxymyristoyl-[acyl-carrier protein] + UDP-3-O-((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine | myristoyl-[acyl-carrier protein] does not serve as an acyl donor for the overproduced UDP-3-O-((R)-3-hydroxymyristoyl)-GlcN N-acyltransferase | Escherichia coli | UDP-2,3-bis((3R)-3-hydroxymyristoyl)-alpha-D-glucosamine + holo-[acyl-carrier protein] | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| firA | - |
Escherichia coli |
General Information
| General Information | Comment | Organism |
|---|---|---|
| malfunction | enzyme activity of the temperature-sensitive firA mutant RL-25 is reduced to less than 10% of wild-type enzyme | Escherichia coli |
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