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ARNA_PSEFS
ID   ARNA_PSEFS              Reviewed;         663 AA.
AC   C3KAD2;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   16-JUN-2009, sequence version 1.
DT   03-AUG-2022, entry version 99.
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}; OrderedLocusNames=PFLU_3041;
OS   Pseudomonas fluorescens (strain SBW25).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=216595;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SBW25;
RX   PubMed=19432983; DOI=10.1186/gb-2009-10-5-r51;
RA   Silby M.W., Cerdeno-Tarraga A.M., Vernikos G.S., Giddens S.R.,
RA   Jackson R.W., Preston G.M., Zhang X.-X., Moon C.D., Gehrig S.M.,
RA   Godfrey S.A.C., Knight C.G., Malone J.G., Robinson Z., Spiers A.J.,
RA   Harris S., Challis G.L., Yaxley A.M., Harris D., Seeger K., Murphy L.,
RA   Rutter S., Squares R., Quail M.A., Saunders E., Mavromatis K.,
RA   Brettin T.S., Bentley S.D., Hothersall J., Stephens E., Thomas C.M.,
RA   Parkhill J., Levy S.B., Rainey P.B., Thomson N.R.;
RT   "Genomic and genetic analyses of diversity and plant interactions of
RT   Pseudomonas fluorescens.";
RL   Genome Biol. 10:R51.1-R51.16(2009).
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; AM181176; CAY49270.1; -; Genomic_DNA.
DR   RefSeq; WP_012724221.1; NC_012660.1.
DR   AlphaFoldDB; C3KAD2; -.
DR   SMR; C3KAD2; -.
DR   STRING; 216595.PFLU_3041; -.
DR   PRIDE; C3KAD2; -.
DR   EnsemblBacteria; CAY49270; CAY49270; PFLU_3041.
DR   KEGG; pfs:PFLU_3041; -.
DR   eggNOG; COG0223; Bacteria.
DR   eggNOG; COG0451; Bacteria.
DR   HOGENOM; CLU_007383_23_1_6; -.
DR   OMA; VRYCVKY; -.
DR   OrthoDB; 2009156at2; -.
DR   UniPathway; UPA00030; -.
DR   UniPathway; UPA00032; UER00492.
DR   UniPathway; UPA00032; UER00494.
DR   Proteomes; UP000002332; 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; Reference proteome; Transferase.
FT   CHAIN           1..663
FT                   /note="Bifunctional polymyxin resistance protein ArnA"
FT                   /id="PRO_1000213731"
FT   REGION          1..307
FT                   /note="Formyltransferase ArnAFT"
FT   REGION          317..663
FT                   /note="Dehydrogenase ArnADH"
FT   ACT_SITE        106
FT                   /note="Proton donor; for formyltransferase activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   ACT_SITE        437
FT                   /note="Proton acceptor; for decarboxylase activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   ACT_SITE        621
FT                   /note="Proton donor; for decarboxylase activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         116
FT                   /ligand="(6S)-10-formyltetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57454"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         138..142
FT                   /ligand="(6S)-10-formyltetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57454"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         350
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         371..372
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         396
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         401
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         435..436
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         463
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         494
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         528..537
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         615
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   SITE            104
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   SITE            142
FT                   /note="Raises pKa of active site His"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
SQ   SEQUENCE   663 AA;  74186 MW;  DE82921353871FBE CRC64;
     MSSKAVVFAY HDIGCAGIEA LLNTGYDIAA VFTHADDPKE NNFYGSVAQL CARNGIPVHA
     PEDANHPLWI ERIAKLNPDY LFSFYYRNLL SEPLLATARK GAFNLHGSLL PKYRGRAPAN
     WVLVNGETET GVTLHRMVKR ADAGAILAQQ KVIIERSDTG LTLHAKLRDA ASNLLRDALP
     QLAQGKLAET AQDESQATYF GRRTAADGKL EWKKPAEELF NLVRAVTQPY PGAFCAVGEH
     KLVVWQADVV KGNEGLAPGR VISVNPLRIA CGEDSLVIKF GQRNDNGLYL AGPSLANELG
     LVDGSVLRGA ESGRKPRRTR VLILGVNGFI GNHLSERLLR DDRYEVYGLD IGSDAIERLR
     SHPNFHYVEG DISIHTEWIE YHIKKCDVVL PLVAIATPIE YTRNPLRVFE LDFEENLKLV
     RYCVKYNKRV IFPSTSEVYG MCQDQYFDED TSNLVVGPVN KQRWIYSVSK QLLDRVIWAY
     GAKGLNFTLF RPFNWMGPRL DRLDSARIGS SRAITQLILN LVEGTPIRLF DGGEQKRCFT
     DIADGIEALA RIIDNDNDAC NGQIINIGNP ENEASIRQLG EELLRQFEAH PLRGNFPPFA
     GFRDVESKAF YGTGYQDVAH RKPSIENAKR LLNWEPTVEM SETIGNTLDF FLREAMLEIA
     DKK
 
 
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