Entry
Name
acyl-Kdo2-lipid IVA acyltransferase;
lpxM (gene name);
MsbB acyltransferase;
myristoyl-[acyl-carrier protein]:alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-(dodecanoyl)-lipid IVA O-myristoyltransferase;
tetradecanoyl-[acyl-carrier protein]:dodecanoyl-Kdo2-lipid IVA O-tetradecanoyltransferase;
lauroyl-Kdo2-lipid IVA myristoyltransferase
Class
Transferases;
Acyltransferases;
Transferring groups other than aminoacyl groups
BRITE hierarchy
Sysname
fatty acyl-[acyl-carrier protein]:alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-(acyl)-[lipid IVA] O-acyltransferase
Reaction(IUBMB)
a fatty acyl-[acyl-carrier protein] + an alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-(acyl)-[lipid IVA] = an alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-(acyl)2-[lipid IVA] + an [acyl-carrier protein]
Reaction(KEGG)
Substrate
fatty acyl-[acyl-carrier protein];
alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-(acyl)-[lipid IVA]
Product
alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-(acyl)2-[lipid IVA];
[acyl-carrier protein] [CPD:
C00229 ]
Comment
The enzyme is involved in the biosynthesis of the phosphorylated outer membrane glycolipid lipid A. It transfers an acyl group to the 3-O position of the 3R-hydroxyacyl already attached at the 2-O position of the non-reducing glucosamine molecule. The enzyme from the bacterium Escherichia coli is specific for myristoyl (C14) acyl groups, giving the enzyme its previous accepted name. However, enzymes from different species accept highly variable substrates.
History
EC 2.3.1.243 created 2014, modified 2021
Pathway
ec00540 Lipopolysaccharide biosynthesis
Orthology
K02560 lauroyl-Kdo2-lipid IVA myristoyltransferase
Genes
ECS : ECs_2565(lpxM) pO157p82
ECF : ECH74115_2591(msbB) ECH74115_B0114(msbB)
ETW : ECSP_2429(lpxM) ECSP_6105
ELX : CDCO157_2400 CDCO157_A0085(msbB)
EOI : ECO111_2377(lpxM) ECO111_p3-82
EOJ : ECO26_2707(lpxM) ECO26_p1-86
EOH : ECO103_2045(lpxM) ECO103_p23
ECOO : ECRM13514_2363(msbB) ECRM13514_5711
ECOH : ECRM13516_2267(msbB) ECRM13516_5476
ECK : EC55989_2034(lpxM) EC55989_4949(msbB)
ECW : EcE24377A_2085(msbB1) EcE24377A_4852(msbB2)
EUN : UMNK88_2327(msbB) UMNK88_5218(msbB)
ECQ : ECED1_2060(lpxM) ECED1_5141(msbB)
ECT : ECIAI39_1194(lpxM) ECIAI39_4758(msbB)
EOC : CE10_2141(lpxM) CE10_5033(msbB)
ELO : EC042_2022(msbB) EC042_4769(msbB2)
ECOI : ECOPMV1_01948(msbB)
EFE : EFER_1217(lpxM) EFER_1914(msbB)
SEM : STMDT12_C19140(msbB)
SFL : CP0238(msbB2) SF1865(msbB)
SFE : SFxv_1135 SFxv_2089(lpxM) SFxv_5092(msbB2)
SSN : SSON_1286(msbB) SSON_P182(msbB2)
SBO : SBO_1172(msbB) SBO_P119(msbB2)
SBC : SbBS512_A0263(msbB) SbBS512_E0951(msbB)
SDY : SDY_1142(msbB) SDY_P110(msbB2)
SDZ : Asd1617_01475 Asd1617_06301
REE : electrica_01867(msbB)
CLAP : NCTC11466_01766(msbB)
KIE : NCTC12125_00941(msbB)
METY : MRY16398_35640(lpxM)
AHN : NCTC12129_01988(msbB)
PSHI : SAMEA2665130_2178(msbB)
YPG : YpAngola_A2415(msbB)
YPI : YpsIP31758_2025(msbB)
SMW : SMWW4_v1c27850(lpxM)
SERA : Ser39006_015220(msbB)
SFJ : SAMEA4384070_2814(msbB)
SOF : NCTC11214_04095(msbB)
PAQU : DMB82_0011795(lpxM)
DIC : Dpoa569_002025(msbB)
EHD : ERCIPSTX3056_291(lpxM)
TPTY : NCTC11468_02115(msbB)
PHEI : NCTC12003_02171(msbB)
PRJ : NCTC6933_01805(msbB)
LRI : NCTC12151_01984(msbB)
HIC : NTHIC486_00832(msbB)
HPIT : NCTC13334_01240(msbB)
HHZ : NCTC10839_01759(msbB)
HAEG : NCTC8502_01040(msbB)
PDAG : 4362423_00497(msbB)
ADP : NCTC12871_00096(msbB)
ALIG : NCTC10568_00198(lpxM)
ASEG : NCTC10977_01147(msbB)
AVT : NCTC3438_01132(msbB)
PAET : NCTC13378_00464(msbB)
VAU : VANGNB10_cI2552(msbB)
VPL : SA104470976_02532(msbB)
SCAA : TUM17387_21860(lpxM)
AHA : AHA_2101(msbB) AHA_2102
AHY : AHML_12495 AHML_12500
AHD : AI20_07535 AI20_07540
AHR : V428_12895 V428_12900
AHP : V429_12915 V429_12920
AHJ : V469_10145 V469_10150
AHH : RY45_12315 RY45_12320
AHI : VU14_09910 VU14_09915
AAJ : BOQ57_12125 BOQ57_12130
ASA : ASA_2195(msbB2) ASA_2196(msbB1)
AEO : O23A_p1260 O23A_p1262
AVO : AMS64_08525 AMS64_08530
AMED : B224_2092 B224_2094
ADH : CK627_14285(msbB) CK627_14290
ACAV : VI35_10170 VI35_10175
AEM : CK911_05480(msbB) CK911_05485
AEA : C2U39_10080 C2U39_10085
ARV : C7N77_14920 C7N77_14925(msbB)
AES : C2U30_03590 C2U30_03595
AEL : NCTC12917_01970(msbB1) NCTC12917_01971(msbB2)
ASIM : FE240_04615(msbB) FE240_07685
AALL : I6G90_06635 I6G90_06640(lpxM)
AJD : I6H43_01010 I6H43_01015(lpxM)
ARIV : KYK33_10990 KYK33_10995
ASAA : KXJ75_11255 KXJ75_11260
AEJ : E5E97_17135 E5E97_17140(msbB)
ABES : IU367_11755 IU367_11760(lpxM)
» show all
Taxonomy
Reference
Authors
Clementz T, Zhou Z, Raetz CR
Title
Function of the Escherichia coli msbB gene, a multicopy suppressor of htrB knockouts, in the acylation of lipid A. Acylation by MsbB follows laurate incorporation by HtrB.
Journal
Sequence
Reference
Authors
Dovala D, Rath CM, Hu Q, Sawyer WS, Shia S, Elling RA, Knapp MS, Metzger LE 4th.
Title
Structure-guided enzymology of the lipid A acyltransferase LpxM reveals a dual activity mechanism.
Journal
Sequence
Other DBs
ExPASy - ENZYME nomenclature database: 2.3.1.243