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NIA_BEABA
ID   NIA_BEABA               Reviewed;         894 AA.
AC   P43100;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 111.
DE   RecName: Full=Nitrate reductase [NADPH];
DE            Short=NR;
DE            EC=1.7.1.3;
GN   Name=NIA;
OS   Beauveria bassiana (White muscardine disease fungus) (Tritirachium
OS   shiotae).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Sordariomycetes;
OC   Hypocreomycetidae; Hypocreales; Cordycipitaceae; Beauveria.
OX   NCBI_TaxID=176275;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=BB147;
RA   Maurer P.;
RL   Submitted (FEB-1995) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Nitrate reductase is a key enzyme involved in the first step
CC       of nitrate assimilation in plants, fungi and bacteria.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + NADP(+) + nitrite = H(+) + NADPH + nitrate;
CC         Xref=Rhea:RHEA:19061, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16301, ChEBI:CHEBI:17632, ChEBI:CHEBI:57783,
CC         ChEBI:CHEBI:58349; EC=1.7.1.3;
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692; Evidence={ECO:0000250};
CC       Note=Binds 1 FAD. {ECO:0000250};
CC   -!- COFACTOR:
CC       Name=heme; Xref=ChEBI:CHEBI:30413; Evidence={ECO:0000250};
CC       Note=Binds 1 heme group. The heme group is called cytochrome b-557.
CC       {ECO:0000250};
CC   -!- COFACTOR:
CC       Name=Mo-molybdopterin; Xref=ChEBI:CHEBI:71302; Evidence={ECO:0000250};
CC       Note=Binds 1 Mo-molybdopterin (Mo-MPT) cofactor per subunit.
CC       {ECO:0000250};
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the nitrate reductase family. {ECO:0000305}.
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DR   EMBL; X84950; CAA59336.1; -; Genomic_DNA.
DR   PIR; S52857; S52857.
DR   AlphaFoldDB; P43100; -.
DR   SMR; P43100; -.
DR   STRING; 176275.XP_008600163.1; -.
DR   GO; GO:0071949; F:FAD binding; ISS:UniProtKB.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0030151; F:molybdenum ion binding; ISS:UniProtKB.
DR   GO; GO:0043546; F:molybdopterin cofactor binding; IEA:InterPro.
DR   GO; GO:0050464; F:nitrate reductase (NADPH) activity; IEA:UniProtKB-EC.
DR   GO; GO:0042128; P:nitrate assimilation; IEA:UniProtKB-KW.
DR   GO; GO:0006809; P:nitric oxide biosynthetic process; IEA:InterPro.
DR   Gene3D; 3.10.120.10; -; 1.
DR   Gene3D; 3.40.50.80; -; 1.
DR   Gene3D; 3.90.420.10; -; 1.
DR   InterPro; IPR001834; CBR-like.
DR   InterPro; IPR008333; Cbr1-like_FAD-bd_dom.
DR   InterPro; IPR001199; Cyt_B5-like_heme/steroid-bd.
DR   InterPro; IPR036400; Cyt_B5-like_heme/steroid_sf.
DR   InterPro; IPR018506; Cyt_B5_heme-BS.
DR   InterPro; IPR017927; FAD-bd_FR_type.
DR   InterPro; IPR001709; Flavoprot_Pyr_Nucl_cyt_Rdtase.
DR   InterPro; IPR039261; FNR_nucleotide-bd.
DR   InterPro; IPR014756; Ig_E-set.
DR   InterPro; IPR005066; MoCF_OxRdtse_dimer.
DR   InterPro; IPR008335; Mopterin_OxRdtase_euk.
DR   InterPro; IPR012137; Nitr_rd_NADH.
DR   InterPro; IPR001433; OxRdtase_FAD/NAD-bd.
DR   InterPro; IPR000572; OxRdtase_Mopterin-bd_dom.
DR   InterPro; IPR036374; OxRdtase_Mopterin-bd_sf.
DR   InterPro; IPR022407; OxRdtase_Mopterin_BS.
DR   InterPro; IPR017938; Riboflavin_synthase-like_b-brl.
DR   PANTHER; PTHR19370; PTHR19370; 1.
DR   Pfam; PF00173; Cyt-b5; 1.
DR   Pfam; PF00970; FAD_binding_6; 1.
DR   Pfam; PF03404; Mo-co_dimer; 1.
DR   Pfam; PF00175; NAD_binding_1; 1.
DR   Pfam; PF00174; Oxidored_molyb; 1.
DR   PIRSF; PIRSF000233; Nitr_rd_NADH; 1.
DR   PRINTS; PR00363; CYTOCHROMEB5.
DR   PRINTS; PR00407; EUMOPTERIN.
DR   PRINTS; PR00371; FPNCR.
DR   SMART; SM01117; Cyt-b5; 1.
DR   SUPFAM; SSF52343; SSF52343; 1.
DR   SUPFAM; SSF55856; SSF55856; 1.
DR   SUPFAM; SSF56524; SSF56524; 1.
DR   SUPFAM; SSF63380; SSF63380; 1.
DR   SUPFAM; SSF81296; SSF81296; 1.
DR   PROSITE; PS00191; CYTOCHROME_B5_1; 1.
DR   PROSITE; PS50255; CYTOCHROME_B5_2; 1.
DR   PROSITE; PS51384; FAD_FR; 1.
DR   PROSITE; PS00559; MOLYBDOPTERIN_EUK; 1.
PE   3: Inferred from homology;
KW   Disulfide bond; FAD; Flavoprotein; Heme; Iron; Metal-binding; Molybdenum;
KW   NADP; Nitrate assimilation; Oxidoreductase.
FT   CHAIN           1..894
FT                   /note="Nitrate reductase [NADPH]"
FT                   /id="PRO_0000166041"
FT   DOMAIN          535..610
FT                   /note="Cytochrome b5 heme-binding"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00279"
FT   DOMAIN          638..749
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00716"
FT   REGION          1..79
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        6..26
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        28..42
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         169
FT                   /ligand="Mo-molybdopterin"
FT                   /ligand_id="ChEBI:CHEBI:71302"
FT                   /ligand_part="Mo"
FT                   /ligand_part_id="ChEBI:CHEBI:28685"
FT                   /evidence="ECO:0000250|UniProtKB:P49050"
FT   BINDING         570
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00279"
FT   BINDING         593
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00279"
FT   BINDING         692..695
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:A0A286R227"
FT   BINDING         709..713
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:A0A286R227"
FT   BINDING         723..725
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:A0A286R227"
FT   BINDING         773
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:P17571"
FT   BINDING         776
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:A0A286R227"
FT   DISULFID        418
FT                   /note="Interchain"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   894 AA;  99934 MW;  D0ED234BF1B1322B CRC64;
     MAVKSQLGVT YTTKTFPPSP PRTVGNSHAG SDDERDEVDA TPTTPPVEKL GQLLKPYSLP
     PTNTPTHVLP EDLKTPDHRV NRDPRLIRLT GVHPFNVEPP LTDLYDEGFL NSENLHYVRN
     HGPVPHCPDD ESLNWTFTVD GLVEKPFTIA VRDLIQKYDQ FTYPVTLVCA GNRRKEQNVV
     RKSKGFSWGA AGLSTALWTG VPIGALLRMA KPKRAAKYVC FEGADKLPNG YYGTSVKLNW
     CMDENRGIMV AHKMNGQSLH PDHGKPVRII IPGQIGGRSV KWLKKITITS EPSDNWYHIY
     DNRVLPTTIS PDASANLPDV WKDEKYAIYD LNANSAICYP RHDERLVLAT APDTYKVRGY
     AYGGGGKRIT RLEVTLNKGK SWLLAGIHYP EDDYRRAPDG DLLYGGSTDM WWRETCFCWC
     FWEIDIPVAD LSAADDIMIR AMDEGMMVQP RDMYWSVLGM MNNPWFRVVI HKEDGALRFE
     HPTQPALMPG GWMERVKRRG GNLTNGFWGE KTAAEEEQVL AEPEKEICMT NPKVVRIISL
     EELKAHEGEM EPWFVVNGHV YNGTPYLDNH PGGATSIINA AAQDATEEFM TIHSENAKAM
     MPQYHIGTLN DAARKALEGS AEESPASDPT RAVFLQPKYW SKAILETKTD VSSDSKIFSF
     RLDHAAQSIG LPTGQHLLVR LRDPATREAV IRAYTPLSET HAKGQLDILI KIYRDVPGQP
     GGKMTQALDS IPLGHFVDIK GPVGKFEYLG KGHCTVSGTS RHVRRFVMIC AGSGVTPIFQ
     VLRAVTSDAQ DGTECLVLDG NRCEKDILCR EELDAMVARA PARTTLLHKL SRPDASWCGL
     RGRMDKEYLE EHIGGFRKSD GREMVLVCGP AALEETVRSV LVEMAWKPED MLFF
 
 
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