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EC 2.3.1.251 Details
EC number
2.3.1.251
Accepted name
lipid IVA palmitoyltransferase
Reaction
(1) 1-palmitoyl-2-acyl-sn-glycero-3-phosphocholine + hexa-acyl lipid A = 2-acyl-sn-glycero-3-phosphocholine + hepta-acyl lipid A;;(2) 1-palmitoyl-2-acyl-sn-glycero-3-phosphocholine + lipid IIA = 2-acyl-sn-glycero-3-phosphocholine + lipid IIB;;(3) 1-palmitoyl-2-acyl-sn-glycero-3-phosphocholine + lipid IVA = 2-acyl-sn-glycero-3-phosphocholine + lipid IVB
Other name(s)
PagP, crcA (gene name)
Systematic name
1-palmitoyl-2-acyl-sn-glycero-3-phosphocholine:lipid-IVA palmitoyltransferase
Comment
Isolated from the bacteria Escherichia coli and Salmonella typhimurium. The enzyme prefers phosphatidylcholine with a palmitoyl group at the sn-1 position and palmitoyl or stearoyl groups at the sn-2 position. There is some activity with corresponding phosphatidylserines but only weak activity with other diacylphosphatidyl compounds. The enzyme also acts on Kdo-(2→4)-Kdo-(2→6)-lipid IVA.
History
created 2015
EC Tree
2.3.1.55 created 1976, deleted 1999
2.3.1.120 created 1990, deleted 1992
2.3.1.124 created 1990, deleted 1992