ID   PQQE_ACIBS              Reviewed;         384 AA.
AC   B0VQD7;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=PqqA peptide cyclase {ECO:0000255|HAMAP-Rule:MF_00660};
DE            EC=1.21.98.4 {ECO:0000255|HAMAP-Rule:MF_00660};
DE   AltName: Full=Coenzyme PQQ synthesis protein E {ECO:0000255|HAMAP-Rule:MF_00660};
DE   AltName: Full=Pyrroloquinoline quinone biosynthesis protein E {ECO:0000255|HAMAP-Rule:MF_00660};
GN   Name=pqqE {ECO:0000255|HAMAP-Rule:MF_00660}; OrderedLocusNames=ABSDF1983;
OS   Acinetobacter baumannii (strain SDF).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Moraxellales; Moraxellaceae;
OC   Acinetobacter; Acinetobacter calcoaceticus/baumannii complex.
OX   NCBI_TaxID=509170;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SDF;
RX   PubMed=18350144; DOI=10.1371/journal.pone.0001805;
RA   Vallenet D., Nordmann P., Barbe V., Poirel L., Mangenot S., Bataille E.,
RA   Dossat C., Gas S., Kreimeyer A., Lenoble P., Oztas S., Poulain J.,
RA   Segurens B., Robert C., Abergel C., Claverie J.-M., Raoult D., Medigue C.,
RA   Weissenbach J., Cruveiller S.;
RT   "Comparative analysis of Acinetobacters: three genomes for three
RT   lifestyles.";
RL   PLoS ONE 3:E1805-E1805(2008).
CC   -!- FUNCTION: Catalyzes the cross-linking of a glutamate residue and a
CC       tyrosine residue in the PqqA protein as part of the biosynthesis of
CC       pyrroloquinoline quinone (PQQ). {ECO:0000255|HAMAP-Rule:MF_00660}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=[PQQ precursor protein] + S-adenosyl-L-methionine = 5'-
CC         deoxyadenosine + E-Y cross-linked-[PQQ precursor protein] + H(+) + L-
CC         methionine; Xref=Rhea:RHEA:56836, Rhea:RHEA-COMP:14800, Rhea:RHEA-
CC         COMP:14801, ChEBI:CHEBI:15378, ChEBI:CHEBI:17319, ChEBI:CHEBI:57844,
CC         ChEBI:CHEBI:59789, ChEBI:CHEBI:141026, ChEBI:CHEBI:141027;
CC         EC=1.21.98.4; Evidence={ECO:0000255|HAMAP-Rule:MF_00660};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00660};
CC       Note=Binds 1 [4Fe-4S] cluster. The cluster is coordinated with 3
CC       cysteines and an exchangeable S-adenosyl-L-methionine.
CC       {ECO:0000255|HAMAP-Rule:MF_00660};
CC   -!- PATHWAY: Cofactor biosynthesis; pyrroloquinoline quinone biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00660}.
CC   -!- SUBUNIT: Interacts with PqqD. The interaction is necessary for activity
CC       of PqqE. {ECO:0000255|HAMAP-Rule:MF_00660}.
CC   -!- SIMILARITY: Belongs to the radical SAM superfamily. PqqE family.
CC       {ECO:0000255|HAMAP-Rule:MF_00660}.
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DR   EMBL; CU468230; CAP01316.1; -; Genomic_DNA.
DR   AlphaFoldDB; B0VQD7; -.
DR   SMR; B0VQD7; -.
DR   EnsemblBacteria; CAP01316; CAP01316; ABSDF1983.
DR   KEGG; abm:ABSDF1983; -.
DR   HOGENOM; CLU_009273_4_7_6; -.
DR   OMA; GWGRQFF; -.
DR   UniPathway; UPA00539; -.
DR   Proteomes; UP000001741; Chromosome.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0009975; F:cyclase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-KW.
DR   GO; GO:1904047; F:S-adenosyl-L-methionine binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0018189; P:pyrroloquinoline quinone biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_00660; PqqE; 1.
DR   InterPro; IPR023885; 4Fe4S-binding_SPASM_dom.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR006638; Elp3/MiaB/NifB.
DR   InterPro; IPR011843; PQQ_synth_PqqE_bac.
DR   InterPro; IPR017200; PqqE-like.
DR   InterPro; IPR007197; rSAM.
DR   Pfam; PF04055; Radical_SAM; 1.
DR   Pfam; PF13186; SPASM; 1.
DR   PIRSF; PIRSF037420; PQQ_syn_pqqE; 1.
DR   SFLD; SFLDF00280; coenzyme_PQQ_synthesis_protein; 1.
DR   SMART; SM00729; Elp3; 1.
DR   TIGRFAMs; TIGR02109; PQQ_syn_pqqE; 1.
DR   TIGRFAMs; TIGR04085; rSAM_more_4Fe4S; 1.
DR   PROSITE; PS51918; RADICAL_SAM; 1.
PE   3: Inferred from homology;
KW   4Fe-4S; Iron; Iron-sulfur; Metal-binding; Oxidoreductase; PQQ biosynthesis;
KW   S-adenosyl-L-methionine.
FT   CHAIN           1..384
FT                   /note="PqqA peptide cyclase"
FT                   /id="PRO_1000131273"
FT   DOMAIN          5..220
FT                   /note="Radical SAM core"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT   BINDING         19
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="4Fe-4S-S-AdoMet"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00660"
FT   BINDING         23
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="4Fe-4S-S-AdoMet"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00660"
FT   BINDING         26
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="4Fe-4S-S-AdoMet"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00660"
SQ   SEQUENCE   384 AA;  43945 MW;  0762904B69C00396 CRC64;
     MTEGVGLPLW LLAELTYRCL LQCPYCSNPL DYAQHKNELT TQEWFDVFDQ ARQMGAVQLG
     FSGGEPLVRQ DLEQLVAHAH QLGFYTNLVT SGMGLTEQRI SHLKQAGLDH IQISFQASDP
     VLNDALAGSK HAFEQKYEMC RLVKKYDYPM VLNFVIHRHN IDQIDKIIEL CLELNADTVE
     LAICQFYGWA FLNRQGLLPT QEQLIRAERI TNEYREKLKA QNHPCKLIFV VPDYYEERPK
     ACMNGWGKIF FTVAPDGMAL PCHAARQLPI SFPNVREQSL SRIWYESTGF NRFRGDAWMP
     EGCRSCPDKD RDFGGCRCQA YMLTGDASNA DPVCGKSPYH QFIEQARAES EIDSSLEKLV
     FRNSRNSKQF TVQQNIPVQN IVDD