NIRG_PSEST
ID NIRG_PSEST Reviewed; 147 AA.
AC Q52524;
DT 01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1996, sequence version 1.
DT 25-MAY-2022, entry version 73.
DE RecName: Full=Siroheme decarboxylase NirG subunit {ECO:0000250|UniProtKB:I6TCK3};
DE EC=4.1.1.111 {ECO:0000250|UniProtKB:I6TCK3};
GN Name=nirG {ECO:0000303|PubMed:7588711};
OS Pseudomonas stutzeri (Pseudomonas perfectomarina).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=316;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND DISRUPTION PHENOTYPE.
RC STRAIN=ATCC 14405 / JCM 20778 / CIP 107696 / IAM 12931 / LMG 2243 / NCIMB
RC 568 / 218 / ZoBell 632;
RX PubMed=7588711; DOI=10.1111/j.1432-1033.1995.tb20868.x;
RA Palmedo G., Seither P., Koerner H., Matthews J.C., Burkhalter R.S.,
RA Timkovich R., Zumft W.G.;
RT "Resolution of the nirD locus for heme d1 synthesis of cytochrome cd1
RT (respiratory nitrite reductase) from Pseudomonas stutzeri.";
RL Eur. J. Biochem. 232:737-746(1995).
CC -!- FUNCTION: Involved in heme d1 biosynthesis. Catalyzes the
CC decarboxylation of siroheme into didecarboxysiroheme.
CC {ECO:0000250|UniProtKB:I6TCK3}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 H(+) + siroheme = 12,18-didecarboxysiroheme + 2 CO2;
CC Xref=Rhea:RHEA:19093, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:60052, ChEBI:CHEBI:140497; EC=4.1.1.111;
CC Evidence={ECO:0000250|UniProtKB:I6TCK3};
CC -!- PATHWAY: Porphyrin-containing compound metabolism.
CC {ECO:0000250|UniProtKB:I6TCK3}.
CC -!- SUBUNIT: Probably forms a complex composed of NirD, NirL, NirG and
CC NirH. All proteins are required for the total conversion of siroheme to
CC didecarboxysiroheme. {ECO:0000250|UniProtKB:I6TCK3}.
CC -!- DISRUPTION PHENOTYPE: Insertional mutagenesis results in the loss of
CC respiratory nitrite reductase activity in vivo and in vitro. Mutant
CC strains synthesize a periplasmic cytochrome cd1 that lacks heme d1.
CC {ECO:0000269|PubMed:7588711}.
CC -!- SIMILARITY: Belongs to the Ahb/Nir family. {ECO:0000305}.
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DR EMBL; X53676; CAA90581.1; -; Genomic_DNA.
DR PIR; S68351; S68351.
DR RefSeq; WP_003279931.1; NZ_CP036186.1.
DR AlphaFoldDB; Q52524; -.
DR SMR; Q52524; -.
DR STRING; 32042.PstZobell_00927; -.
DR GO; GO:0016829; F:lyase activity; IEA:UniProtKB-KW.
DR GO; GO:0043565; F:sequence-specific DNA binding; IEA:InterPro.
DR Gene3D; 1.10.10.10; -; 1.
DR InterPro; IPR000485; AsnC-type_HTH_dom.
DR InterPro; IPR040523; AsnC_trans_reg2.
DR InterPro; IPR019888; Tscrpt_reg_AsnC-like.
DR InterPro; IPR019885; Tscrpt_reg_HTH_AsnC-type_CS.
DR InterPro; IPR036388; WH-like_DNA-bd_sf.
DR Pfam; PF17805; AsnC_trans_reg2; 1.
DR Pfam; PF13404; HTH_AsnC-type; 1.
DR SMART; SM00344; HTH_ASNC; 1.
PE 3: Inferred from homology;
KW Lyase.
FT CHAIN 1..147
FT /note="Siroheme decarboxylase NirG subunit"
FT /id="PRO_0000021816"
SQ SEQUENCE 147 AA; 16566 MW; F64080056B42EBD6 CRC64;
MDELDRQLIN RLQHGLPLVR HPWEALAEEL GSTAEVLRLR VQALLDDGTL TRFGPMFDID
RLGGAFTLAA LSVPEARFDA VAAQLEAMPE VAHNYRREHQ WNMWFVLGCE TPQGITETIA
RIEAQTGLTV LNLPKEETFH VGLHFPV