ID A0A3D9SRC2_9ACTN Unreviewed; 550 AA.
AC A0A3D9SRC2;
DT 16-JAN-2019, integrated into UniProtKB/TrEMBL.
DT 16-JAN-2019, sequence version 1.
DT 27-MAR-2024, entry version 21.
DE RecName: Full=assimilatory sulfite reductase (ferredoxin) {ECO:0000256|ARBA:ARBA00012353};
DE EC=1.8.7.1 {ECO:0000256|ARBA:ARBA00012353};
GN ORFNames=DFJ69_0566 {ECO:0000313|EMBL:REE95184.1};
OS Thermomonospora umbrina.
OC Bacteria; Actinomycetota; Actinomycetes; Streptosporangiales;
OC Thermomonosporaceae; Thermomonospora.
OX NCBI_TaxID=111806 {ECO:0000313|EMBL:REE95184.1, ECO:0000313|Proteomes:UP000256661};
RN [1] {ECO:0000313|EMBL:REE95184.1, ECO:0000313|Proteomes:UP000256661}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 43927 {ECO:0000313|EMBL:REE95184.1,
RC ECO:0000313|Proteomes:UP000256661};
RA Klenk H.-P.;
RT "Sequencing the genomes of 1000 actinobacteria strains.";
RL Submitted (AUG-2018) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the reduction of sulfite to sulfide, a step in the
CC biosynthesis of sulfur-containing amino acids and cofactors.
CC {ECO:0000256|ARBA:ARBA00003247}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=3 H2O + hydrogen sulfide + 6 oxidized [2Fe-2S]-[ferredoxin] =
CC 7 H(+) + 6 reduced [2Fe-2S]-[ferredoxin] + sulfite;
CC Xref=Rhea:RHEA:23132, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17359,
CC ChEBI:CHEBI:29919, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738; EC=1.8.7.1;
CC Evidence={ECO:0000256|ARBA:ARBA00000993};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|ARBA:ARBA00001966};
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:REE95184.1}.
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DR EMBL; QTTT01000001; REE95184.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A3D9SRC2; -.
DR OrthoDB; 3189055at2; -.
DR Proteomes; UP000256661; Unassembled WGS sequence.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0051536; F:iron-sulfur cluster binding; IEA:InterPro.
DR GO; GO:0050311; F:sulfite reductase (ferredoxin) activity; IEA:UniProtKB-EC.
DR Gene3D; 3.90.480.20; -; 1.
DR Gene3D; 3.30.413.10; Sulfite Reductase Hemoprotein, domain 1; 2.
DR InterPro; IPR005117; NiRdtase/SiRdtase_haem-b_fer.
DR InterPro; IPR036136; Nit/Sulf_reduc_fer-like_dom_sf.
DR InterPro; IPR006067; NO2/SO3_Rdtase_4Fe4S_dom.
DR InterPro; IPR045854; NO2/SO3_Rdtase_4Fe4S_sf.
DR InterPro; IPR006066; NO2/SO3_Rdtase_FeS/sirohaem_BS.
DR PANTHER; PTHR32439; FERREDOXIN--NITRITE REDUCTASE, CHLOROPLASTIC; 1.
DR PANTHER; PTHR32439:SF0; FERREDOXIN--NITRITE REDUCTASE, CHLOROPLASTIC; 1.
DR Pfam; PF01077; NIR_SIR; 2.
DR Pfam; PF03460; NIR_SIR_ferr; 2.
DR PRINTS; PR00397; SIROHAEM.
DR SUPFAM; SSF56014; Nitrite and sulphite reductase 4Fe-4S domain-like; 2.
DR SUPFAM; SSF55124; Nitrite/Sulfite reductase N-terminal domain-like; 2.
DR PROSITE; PS00365; NIR_SIR; 2.
PE 4: Predicted;
KW Heme {ECO:0000256|ARBA:ARBA00022617}; Iron {ECO:0000256|ARBA:ARBA00022617};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022617};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002};
KW Reference proteome {ECO:0000313|Proteomes:UP000256661};
KW Thioether bond {ECO:0000256|ARBA:ARBA00022784}.
FT DOMAIN 90..151
FT /note="Nitrite/Sulfite reductase ferredoxin-like"
FT /evidence="ECO:0000259|Pfam:PF03460"
FT DOMAIN 160..311
FT /note="Nitrite/sulphite reductase 4Fe-4S"
FT /evidence="ECO:0000259|Pfam:PF01077"
FT DOMAIN 336..401
FT /note="Nitrite/Sulfite reductase ferredoxin-like"
FT /evidence="ECO:0000259|Pfam:PF03460"
FT DOMAIN 412..544
FT /note="Nitrite/sulphite reductase 4Fe-4S"
FT /evidence="ECO:0000259|Pfam:PF01077"
FT REGION 1..31
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 550 AA; 61265 MW; 212A30EF3F7BD72A CRC64;
MPPSVKRKRG EGQWALGYHE PLNKNEENKK NDDGLNVRQR IIDVYSKAGF DSIDPADLRG
RFRWFGLYTQ RRPGIDGGKT GSLPDEELDD RYFMLRVRID GGQLSPAQLR TIADIANRYA
RGTADVTDRQ NIQYHWIAIE DVPAIWEALE SVGLSTMEAC GDTPRVIIGC PLAGIAEDEV
IDGTPQIHDV HDRYIGTKEF SNLPRKFKSA ISGCTAHCTV HEINDVAFVG TVNAEGVAGY
QAFVGGGLST NPMFAKSLGV FVKPEQVHEV WKAIISVFRD YGYRRLRHRA RIKFLVNDWG
AERFREVVEK EYLGYALPDG PEPAAPLPRR DHVGIHPQKD GNFYVGFAPR VGRVNGDLLN
VIADLAEEYG SGRVRTTAEQ KMVILDVPEE RTRALADALA EHDLQVNPST FRRQTMACTG
IEFCKLAIVE TKQRGMDLIE ELEKRLPDFD QPLSININGC PNACARIQVA DIGLKGQLVV
DDNGAQVEGF QIHLGGRLGT TFGKKVRGLK TTADGLADYV ERVVRTYDEQ RGDGESFAEW
VQRASDAELQ
//
