ID   LPXD2_FRATO             Reviewed;         337 AA.
AC   Q0BN22;
DT   12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT   17-OCT-2006, sequence version 1.
DT   03-AUG-2022, entry version 76.
DE   RecName: Full=UDP-3-O-acylglucosamine N-acyltransferase 2 {ECO:0000255|HAMAP-Rule:MF_00523};
DE            EC=2.3.1.191 {ECO:0000255|HAMAP-Rule:MF_00523};
GN   Name=lpxD2 {ECO:0000255|HAMAP-Rule:MF_00523}; OrderedLocusNames=FTH_0539;
OS   Francisella tularensis subsp. holarctica (strain OSU18).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales;
OC   Francisellaceae; Francisella.
OX   NCBI_TaxID=393011;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=OSU18;
RX   PubMed=16980500; DOI=10.1128/jb.00506-06;
RA   Petrosino J.F., Xiang Q., Karpathy S.E., Jiang H., Yerrapragada S., Liu Y.,
RA   Gioia J., Hemphill L., Gonzalez A., Raghavan T.M., Uzman A., Fox G.E.,
RA   Highlander S., Reichard M., Morton R.J., Clinkenbeard K.D., Weinstock G.M.;
RT   "Chromosome rearrangement and diversification of Francisella tularensis
RT   revealed by the type B (OSU18) genome sequence.";
RL   J. Bacteriol. 188:6977-6985(2006).
CC   -!- FUNCTION: Catalyzes the N-acylation of UDP-3-O-acylglucosamine using 3-
CC       hydroxyacyl-ACP as the acyl donor. Is involved in the biosynthesis of
CC       lipid A, a phosphorylated glycolipid that anchors the
CC       lipopolysaccharide to the outer membrane of the cell.
CC       {ECO:0000255|HAMAP-Rule:MF_00523}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a (3R)-hydroxyacyl-[ACP] + a UDP-3-O-[(3R)-3-hydroxyacyl]-
CC         alpha-D-glucosamine = a UDP-2-N,3-O-bis[(3R)-3-hydroxyacyl]-alpha-D-
CC         glucosamine + H(+) + holo-[ACP]; Xref=Rhea:RHEA:53836, Rhea:RHEA-
CC         COMP:9685, Rhea:RHEA-COMP:9945, ChEBI:CHEBI:15378, ChEBI:CHEBI:64479,
CC         ChEBI:CHEBI:78827, ChEBI:CHEBI:137740, ChEBI:CHEBI:137748;
CC         EC=2.3.1.191; Evidence={ECO:0000255|HAMAP-Rule:MF_00523};
CC   -!- PATHWAY: Bacterial outer membrane biogenesis; LPS lipid A biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00523}.
CC   -!- SUBUNIT: Homotrimer. {ECO:0000255|HAMAP-Rule:MF_00523}.
CC   -!- SIMILARITY: Belongs to the transferase hexapeptide repeat family. LpxD
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00523}.
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DR   EMBL; CP000437; ABI82512.1; -; Genomic_DNA.
DR   RefSeq; WP_003014857.1; NC_017463.1.
DR   AlphaFoldDB; Q0BN22; -.
DR   SMR; Q0BN22; -.
DR   KEGG; fth:FTH_0539; -.
DR   OMA; QIQIAHN; -.
DR   UniPathway; UPA00973; -.
DR   GO; GO:0016410; F:N-acyltransferase activity; IEA:InterPro.
DR   GO; GO:0009245; P:lipid A biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd03352; LbH_LpxD; 1.
DR   HAMAP; MF_00523; LpxD; 1.
DR   InterPro; IPR001451; Hexapep.
DR   InterPro; IPR018357; Hexapep_transf_CS.
DR   InterPro; IPR007691; LpxD.
DR   InterPro; IPR011004; Trimer_LpxA-like_sf.
DR   InterPro; IPR020573; UDP_GlcNAc_AcTrfase_non-rep.
DR   PANTHER; PTHR43378; PTHR43378; 1.
DR   Pfam; PF00132; Hexapep; 4.
DR   Pfam; PF04613; LpxD; 1.
DR   SUPFAM; SSF51161; SSF51161; 1.
DR   TIGRFAMs; TIGR01853; lipid_A_lpxD; 1.
DR   PROSITE; PS00101; HEXAPEP_TRANSFERASES; 2.
PE   3: Inferred from homology;
KW   Acyltransferase; Lipid A biosynthesis; Lipid biosynthesis;
KW   Lipid metabolism; Repeat; Transferase.
FT   CHAIN           1..337
FT                   /note="UDP-3-O-acylglucosamine N-acyltransferase 2"
FT                   /id="PRO_0000264371"
FT   ACT_SITE        238
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00523"
SQ   SEQUENCE   337 AA;  35443 MW;  F30AA4F35E8EADA3 CRC64;
     MYSLDFLASK LDGEVKGDKN VEIKKIATLS QAGEGDISFC TNPKYLKALS ETKASAVLIT
     EEVLEFCNTN AVVLSNPYMA LAKVMELFDK SPRPDGKIHS KAVIAASAII GENVTIGANA
     VVGENVVIGD NVYIGACATI DNGTKIGNDT LIKSNVSIAH DVVIGTGCII HQNAVIGCDG
     FGNARDEDGS WTKIPQLGRV IIEDDVEIGS GTTVDRGAID DTIIKKGARI DNLVQIAHNV
     VIGRNTALAG VTAVAGSTTI GDNCLIGGQS AITGHISICD NTIIGGASNI GKSITKPGMY
     YAAFEAKPRI QWGRFVAKLA KIDTLITKVK QLEEKIK