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ARNA_AERS4
ID   ARNA_AERS4              Reviewed;         663 AA.
AC   A4SQW9;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-MAY-2007, sequence version 1.
DT   03-AUG-2022, entry version 97.
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=ASA_3309;
OS   Aeromonas salmonicida (strain A449).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Aeromonadales;
OC   Aeromonadaceae; Aeromonas.
OX   NCBI_TaxID=382245;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=A449;
RX   PubMed=18801193; DOI=10.1186/1471-2164-9-427;
RA   Reith M.E., Singh R.K., Curtis B., Boyd J.M., Bouevitch A., Kimball J.,
RA   Munholland J., Murphy C., Sarty D., Williams J., Nash J.H., Johnson S.C.,
RA   Brown L.L.;
RT   "The genome of Aeromonas salmonicida subsp. salmonicida A449: insights into
RT   the evolution of a fish pathogen.";
RL   BMC Genomics 9:427-427(2008).
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; CP000644; ABO91291.1; -; Genomic_DNA.
DR   AlphaFoldDB; A4SQW9; -.
DR   SMR; A4SQW9; -.
DR   STRING; 382245.ASA_3309; -.
DR   KEGG; asa:ASA_3309; -.
DR   eggNOG; COG0223; Bacteria.
DR   eggNOG; COG0451; Bacteria.
DR   HOGENOM; CLU_007383_23_2_6; -.
DR   OMA; VRYCVKY; -.
DR   UniPathway; UPA00030; -.
DR   UniPathway; UPA00032; UER00492.
DR   UniPathway; UPA00032; UER00494.
DR   Proteomes; UP000000225; 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..663
FT                   /note="Bifunctional polymyxin resistance protein ArnA"
FT                   /id="PRO_1000065673"
FT   REGION          1..304
FT                   /note="Formyltransferase ArnAFT"
FT   REGION          316..663
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        436
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         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         349
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         370..371
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         395
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         400
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         434..435
FT                   /ligand="UDP-alpha-D-glucuronate"
FT                   /ligand_id="ChEBI:CHEBI:58052"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01166"
FT   BINDING         462
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            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   663 AA;  74172 MW;  259A69F8C32473DE CRC64;
     MKAVVFAYHD IGCTGIEALL EAGYEIQAVF THADDPSENR FFGSVAQLCA EHGLPVYSPE
     DVNHPLWVEH IKGLAPQALF SFYYRHMLKQ EILDIPSAGA FNLHGSLLPA YRGRAPINWC
     LVNGEQLTGI TLHQMTMRPD AGAIVAQQAV AIKWADTALT LHGKVRLAAK ALLDAELPKL
     RTGDISLTPQ DESRASYYGR RTPADGELHW DKSARDLYNL VRAVTQPYPG AFSFAGDRKL
     TVWKATHIAQ DSDMLPGTIL SQDPLRIACG EGVLEIVAGQ AEGGLYVRGA QLARELGLVA
     GMRLGAKASS ALRKERLTRV LILGVNGFIG NHLTERLLKD GRYEIYGLDI SASALGRFID
     HPHFHFVEGD ISIHTEWIEY HIKKCDVILP LVAIATPIEY TRNPLRVFEL DFEENLKIVR
     YCVKYNKRII FPSTSEVYGM CDDHSFDEDE SRLIVGPIHK QRWIYSVSKQ LLDRVIWAYG
     KKEGLNFTLF RPFNWMGPRL DSLDSARIGS SRAITQLILN LVDGTPIQLV DGGAQKRCFT
     DIEDGIEALF RIIENKGNRC DGQIINIGSP DNEASILQMA EVLLGKFEAH PLRHHFPPFA
     GFKRVESKSF YGDGYQDVSH RRPSIKNARR LLDWEPTIEM EETIGKTLDF FLQGAVSTGV
     EHD
 
 
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