ID   ARNB_ECO8A              Reviewed;         379 AA.
AC   B7M5T5;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 2.
DT   25-MAY-2022, entry version 71.
DE   RecName: Full=UDP-4-amino-4-deoxy-L-arabinose--oxoglutarate aminotransferase {ECO:0000255|HAMAP-Rule:MF_01167};
DE            EC=2.6.1.87 {ECO:0000255|HAMAP-Rule:MF_01167};
DE   AltName: Full=UDP-(beta-L-threo-pentapyranosyl-4''-ulose diphosphate) aminotransferase {ECO:0000255|HAMAP-Rule:MF_01167};
DE            Short=UDP-Ara4O aminotransferase {ECO:0000255|HAMAP-Rule:MF_01167};
DE   AltName: Full=UDP-4-amino-4-deoxy-L-arabinose aminotransferase {ECO:0000255|HAMAP-Rule:MF_01167};
GN   Name=arnB {ECO:0000255|HAMAP-Rule:MF_01167}; OrderedLocusNames=ECIAI1_2329;
OS   Escherichia coli O8 (strain IAI1).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=585034;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=IAI1;
RX   PubMed=19165319; DOI=10.1371/journal.pgen.1000344;
RA   Touchon M., Hoede C., Tenaillon O., Barbe V., Baeriswyl S., Bidet P.,
RA   Bingen E., Bonacorsi S., Bouchier C., Bouvet O., Calteau A., Chiapello H.,
RA   Clermont O., Cruveiller S., Danchin A., Diard M., Dossat C., Karoui M.E.,
RA   Frapy E., Garry L., Ghigo J.M., Gilles A.M., Johnson J., Le Bouguenec C.,
RA   Lescat M., Mangenot S., Martinez-Jehanne V., Matic I., Nassif X., Oztas S.,
RA   Petit M.A., Pichon C., Rouy Z., Ruf C.S., Schneider D., Tourret J.,
RA   Vacherie B., Vallenet D., Medigue C., Rocha E.P.C., Denamur E.;
RT   "Organised genome dynamics in the Escherichia coli species results in
RT   highly diverse adaptive paths.";
RL   PLoS Genet. 5:E1000344-E1000344(2009).
CC   -!- FUNCTION: Catalyzes the conversion of UDP-4-keto-arabinose (UDP-Ara4O)
CC       to UDP-4-amino-4-deoxy-L-arabinose (UDP-L-Ara4N). The modified
CC       arabinose is attached to lipid A and is required for resistance to
CC       polymyxin and cationic antimicrobial peptides. {ECO:0000255|HAMAP-
CC       Rule:MF_01167}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-oxoglutarate + UDP-4-amino-4-deoxy-beta-L-arabinose = L-
CC         glutamate + UDP-beta-L-threo-pentopyranos-4-ulose;
CC         Xref=Rhea:RHEA:24710, ChEBI:CHEBI:16810, ChEBI:CHEBI:29985,
CC         ChEBI:CHEBI:58708, ChEBI:CHEBI:58710; EC=2.6.1.87;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01167};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01167};
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 2/3. {ECO:0000255|HAMAP-Rule:MF_01167}.
CC   -!- PATHWAY: Bacterial outer membrane biogenesis; lipopolysaccharide
CC       biosynthesis. {ECO:0000255|HAMAP-Rule:MF_01167}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01167}.
CC   -!- SIMILARITY: Belongs to the DegT/DnrJ/EryC1 family. ArnB subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01167}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAQ99172.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CU928160; CAQ99172.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_001342601.1; NC_011741.1.
DR   AlphaFoldDB; B7M5T5; -.
DR   SMR; B7M5T5; -.
DR   GeneID; 66673861; -.
DR   KEGG; ecr:ECIAI1_2329; -.
DR   HOGENOM; CLU_033332_0_3_6; -.
DR   UniPathway; UPA00030; -.
DR   UniPathway; UPA00032; UER00493.
DR   GO; GO:0099620; F:UDP-4-amino-4-deoxy-L-arabinose aminotransferase; 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; cd00616; AHBA_syn; 1.
DR   Gene3D; 3.40.640.10; -; 1.
DR   Gene3D; 3.90.1150.10; -; 1.
DR   HAMAP; MF_01167; ArnB_transfer; 1.
DR   InterPro; IPR022850; ArnB_NH2Trfase.
DR   InterPro; IPR000653; DegT/StrS_aminotransferase.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   PANTHER; PTHR30244; PTHR30244; 1.
DR   Pfam; PF01041; DegT_DnrJ_EryC1; 1.
DR   PIRSF; PIRSF000390; PLP_StrS; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
PE   3: Inferred from homology;
KW   Aminotransferase; Antibiotic resistance; Lipid A biosynthesis;
KW   Lipid biosynthesis; Lipid metabolism; Lipopolysaccharide biosynthesis;
KW   Pyridoxal phosphate; Transferase.
FT   CHAIN           1..379
FT                   /note="UDP-4-amino-4-deoxy-L-arabinose--oxoglutarate
FT                   aminotransferase"
FT                   /id="PRO_0000380528"
FT   MOD_RES         182
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01167"
SQ   SEQUENCE   379 AA;  41642 MW;  776EFCE20E0028B1 CRC64;
     MSEFLPFSRP AMGVEELAAV KEVLESGWLT TGPKNQALEQ AFCQLTGNQH AIAVSSATAG
     MHITLMALEI GKGDEVITPS LTWVSTLNMI SLLGATPVMV DVDRDTLMVT PEAIESAITP
     RTKAIIPVHY AGAPADIDAI RAIGERYGIA VIEDAAHAVG TYYKGRHIGA KGTAIFSFHA
     IKNITCAEGG LIVTDNENLA RQLRMLKFHG LGVDAYDRQT WGRAPQAEVL TPGYKYNLTD
     INAAIALTQL AKLEHLNTRR REIAQQYQQA LAALPFQPLS LPAWPHVHAW HLFIIRVDEQ
     RCGISRDALM EALKERGIGT GLHFRAAHTQ KYYRERFPTL SLPNTEWNSE RICSLPLFPD
     MTTADADRVI TALQQLAGQ