ARNA_SALNS
ID ARNA_SALNS Reviewed; 660 AA.
AC B4SYX1;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 23-SEP-2008, sequence version 1.
DT 03-AUG-2022, entry version 79.
DE RecName: Full=Bifunctional polymyxin resistance protein ArnA {ECO:0000255|HAMAP-Rule:MF_01166};
DE Includes:
DE RecName: Full=UDP-4-amino-4-deoxy-L-arabinose formyltransferase {ECO:0000255|HAMAP-Rule:MF_01166};
DE EC=2.1.2.13 {ECO:0000255|HAMAP-Rule:MF_01166};
DE AltName: Full=ArnAFT {ECO:0000255|HAMAP-Rule:MF_01166};
DE AltName: Full=UDP-L-Ara4N formyltransferase {ECO:0000255|HAMAP-Rule:MF_01166};
DE Includes:
DE RecName: Full=UDP-glucuronic acid oxidase, UDP-4-keto-hexauronic acid decarboxylating {ECO:0000255|HAMAP-Rule:MF_01166};
DE EC=1.1.1.305 {ECO:0000255|HAMAP-Rule:MF_01166};
DE AltName: Full=ArnADH {ECO:0000255|HAMAP-Rule:MF_01166};
DE AltName: Full=UDP-GlcUA decarboxylase {ECO:0000255|HAMAP-Rule:MF_01166};
DE AltName: Full=UDP-glucuronic acid dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01166};
GN Name=arnA {ECO:0000255|HAMAP-Rule:MF_01166};
GN OrderedLocusNames=SNSL254_A2484;
OS Salmonella newport (strain SL254).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Salmonella.
OX NCBI_TaxID=423368;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SL254;
RX PubMed=21602358; DOI=10.1128/jb.00297-11;
RA Fricke W.F., Mammel M.K., McDermott P.F., Tartera C., White D.G.,
RA Leclerc J.E., Ravel J., Cebula T.A.;
RT "Comparative genomics of 28 Salmonella enterica isolates: evidence for
RT CRISPR-mediated adaptive sublineage evolution.";
RL J. Bacteriol. 193:3556-3568(2011).
CC -!- FUNCTION: Bifunctional enzyme that catalyzes the oxidative
CC decarboxylation of UDP-glucuronic acid (UDP-GlcUA) to UDP-4-keto-
CC arabinose (UDP-Ara4O) and the addition of a formyl group to UDP-4-
CC amino-4-deoxy-L-arabinose (UDP-L-Ara4N) to form UDP-L-4-formamido-
CC arabinose (UDP-L-Ara4FN). The modified arabinose is attached to lipid A
CC and is required for resistance to polymyxin and cationic antimicrobial
CC peptides. {ECO:0000255|HAMAP-Rule:MF_01166}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=NAD(+) + UDP-alpha-D-glucuronate = CO2 + NADH + UDP-beta-L-
CC threo-pentopyranos-4-ulose; Xref=Rhea:RHEA:24702, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:58052,
CC ChEBI:CHEBI:58710; EC=1.1.1.305; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01166};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6S)-10-formyltetrahydrofolate + UDP-4-amino-4-deoxy-beta-L-
CC arabinose = (6S)-5,6,7,8-tetrahydrofolate + H(+) + UDP-4-deoxy-4-
CC formamido-beta-L-arabinose; Xref=Rhea:RHEA:24706, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:57453, ChEBI:CHEBI:57454, ChEBI:CHEBI:58708,
CC ChEBI:CHEBI:58709; EC=2.1.2.13; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01166};
CC -!- PATHWAY: Nucleotide-sugar biosynthesis; UDP-4-deoxy-4-formamido-beta-L-
CC arabinose biosynthesis; UDP-4-deoxy-4-formamido-beta-L-arabinose from
CC UDP-alpha-D-glucuronate: step 1/3. {ECO:0000255|HAMAP-Rule:MF_01166}.
CC -!- PATHWAY: Nucleotide-sugar biosynthesis; UDP-4-deoxy-4-formamido-beta-L-
CC arabinose biosynthesis; UDP-4-deoxy-4-formamido-beta-L-arabinose from
CC UDP-alpha-D-glucuronate: step 3/3. {ECO:0000255|HAMAP-Rule:MF_01166}.
CC -!- PATHWAY: Bacterial outer membrane biogenesis; lipopolysaccharide
CC biosynthesis. {ECO:0000255|HAMAP-Rule:MF_01166}.
CC -!- SUBUNIT: Homohexamer, formed by a dimer of trimers. {ECO:0000255|HAMAP-
CC Rule:MF_01166}.
CC -!- SIMILARITY: In the N-terminal section; belongs to the Fmt family. UDP-
CC L-Ara4N formyltransferase subfamily. {ECO:0000255|HAMAP-Rule:MF_01166}.
CC -!- SIMILARITY: In the C-terminal section; belongs to the NAD(P)-dependent
CC epimerase/dehydratase family. UDP-glucuronic acid decarboxylase
CC subfamily. {ECO:0000255|HAMAP-Rule:MF_01166}.
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DR EMBL; CP001113; ACF64868.1; -; Genomic_DNA.
DR RefSeq; WP_000648772.1; NZ_CCMR01000001.1.
DR AlphaFoldDB; B4SYX1; -.
DR SMR; B4SYX1; -.
DR EnsemblBacteria; ACF64868; ACF64868; SNSL254_A2484.
DR KEGG; see:SNSL254_A2484; -.
DR HOGENOM; CLU_007383_23_2_6; -.
DR OMA; VRYCVKY; -.
DR UniPathway; UPA00030; -.
DR UniPathway; UPA00032; UER00492.
DR UniPathway; UPA00032; UER00494.
DR Proteomes; UP000008824; Chromosome.
DR GO; GO:0016831; F:carboxy-lyase activity; IEA:InterPro.
DR GO; GO:0099619; F:UDP-4-amino-4-deoxy-L-arabinose formyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0099618; F:UDP-glucuronic acid dehydrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0009245; P:lipid A biosynthetic process; IEA:UniProtKB-KW.
DR GO; GO:0009103; P:lipopolysaccharide biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0046677; P:response to antibiotic; IEA:UniProtKB-KW.
DR CDD; cd05257; Arna_like_SDR_e; 1.
DR HAMAP; MF_01166; ArnA; 1.
DR InterPro; IPR045869; Arna-like_SDR_e.
DR InterPro; IPR021168; Bifun_polymyxin_resist_ArnA.
DR InterPro; IPR001509; Epimerase_deHydtase.
DR InterPro; IPR005793; Formyl_trans_C.
DR InterPro; IPR002376; Formyl_transf_N.
DR InterPro; IPR036477; Formyl_transf_N_sf.
DR InterPro; IPR011034; Formyl_transferase-like_C_sf.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR Pfam; PF01370; Epimerase; 1.
DR Pfam; PF02911; Formyl_trans_C; 1.
DR Pfam; PF00551; Formyl_trans_N; 1.
DR PIRSF; PIRSF036506; Bifun_polymyxin_resist_ArnA; 1.
DR SUPFAM; SSF50486; SSF50486; 1.
DR SUPFAM; SSF51735; SSF51735; 1.
DR SUPFAM; SSF53328; SSF53328; 1.
PE 3: Inferred from homology;
KW Antibiotic resistance; Lipid A biosynthesis; Lipid biosynthesis;
KW Lipid metabolism; Lipopolysaccharide biosynthesis; Multifunctional enzyme;
KW NAD; Oxidoreductase; Transferase.
FT CHAIN 1..660
FT /note="Bifunctional polymyxin resistance protein ArnA"
FT /id="PRO_1000137950"
FT REGION 1..304
FT /note="Formyltransferase ArnAFT"
FT REGION 314..660
FT /note="Dehydrogenase ArnADH"
FT ACT_SITE 104
FT /note="Proton donor; for formyltransferase activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT ACT_SITE 434
FT /note="Proton acceptor; for decarboxylase activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT ACT_SITE 619
FT /note="Proton donor; for decarboxylase activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 114
FT /ligand="(6S)-10-formyltetrahydrofolate"
FT /ligand_id="ChEBI:CHEBI:57454"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 136..140
FT /ligand="(6S)-10-formyltetrahydrofolate"
FT /ligand_id="ChEBI:CHEBI:57454"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 347
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 368..369
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 393
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 398
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 432..433
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 460
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 492
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 526..535
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT BINDING 613
FT /ligand="UDP-alpha-D-glucuronate"
FT /ligand_id="ChEBI:CHEBI:58052"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT SITE 102
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT SITE 140
FT /note="Raises pKa of active site His"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
SQ SEQUENCE 660 AA; 73409 MW; AA3CA2C3DDE5559B CRC64;
MKAVIFAYHD MGCQGVQAVL DAGYEIAAIF THADNPAENT FFGSVSRLAA GLGIPVYAPD
NVNHPIWVDR IAELAPDIIF SFYYRNLLSE EILHLAPAGA FNLHGSLLPA YRGRAPLNWV
LVNGESETGV TLHRMVKRAD AGEIVASQRV AIAQDDVALT LHHKLCQAAR QLLNSILPTM
KCGDIPSVPQ RESDATYYGR RRPEDGLIDW HKPVSTVHNL VRAVAAPWPG AFSYNGSQKF
TIWSSRICPD AQGALPGSVI SVSPLRVACA DGALEIITGQ AGDGITVQGS QLAQTLGLVA
GARLNRPPAT SGKRRIRVLI LGVNGFIGNH LTERLLNEEN YEVYGMDIGS NAISRFLLHP
RFHFVEGDIS IHSEWIEYHV KKCDVVLPLV AIATPIEYTR NPLRVFELDF EENLRIIRYC
VKYRKRVVFP STSEVYGMCT DASFDEDKSN LIVGPVNKPR WIYSVSKQLL DRVIWAYGEK
EGLRFTLFRP FNWMGPRLDS LNAARIGSSR AITQLILNLV EGTPIKLIDG GQQKRCFTDI
RDGIEALFRI IVNEGDRCDG KIINIGNPDN EASIQELATL LLDSFDKHPL RCHFPPFAGF
QVVESRSYYG KGYQDVAHRK PSIDNARRCL GWEPSIAMRD TVEETLDFFL RSVDVAERAS
