Click here to switch to the map view.

The map label for this gene is nirB [C]

Identifier: 21227944

GI number: 21227944

Start: 2193716

End: 2194390

Strand: Direct

Name: nirB [C]

Synonym: MM_1842

Alternate gene names: 21227944

Gene position: 2193716-2194390 (Clockwise)

Preceding gene: 21227943

Following gene: 21227945

Centisome position: 53.55

GC content: 46.37

Gene sequence:

>675_bases
ATGACAAAAGAATATGTTAAGGGGGACCTTCCTGAGAAGGCTGCAATTTTACAGAGAGATGGGGAAACTTATGCTATTGC
TCCGCACATTCCCGGAGGGATCGTTTATCCCGAAACCCTGAGAAAGCTGGCAGACATTGCAGAGAAATATGGGGCTGCAG
CTCTCAAAGTTACTTCAGCACAGAGAATTGCAGTTGTGGGACTTAAGGAGGAAGACCTGGATTCAGCCTGGGGTGAACTC
GGCATGAAACCCGGTGCAGCTATCGGGCTCTGCGTCAGGAGCGTCAAGATTTGTCCCGGAACTACCTTTTGCAAGAGGGG
AAAGCAGGACTCTGTAGGGCTTGGTTTGAAACTTGATGAAAAGTACCACGGTATGCAGCTTCCTTCCAAATTCAAGATGG
GTGTTTCAGGATGTCAAAATTCCTGTTCCGAAACTATCATAAAAGATGTGGGAATTGTGGGTACTGCAAAGGGTTTTAAT
GTAAGCGTGGGGGGAAATGCAGGGCCACGCCCGAGACTAGGGGAAGTTGTGGCAAAGGACCTTTCCGAAGAACAGGTTCT
GGATCTTGTTGAGAGGATAATCAACTTCTATAAAGGATATGGAAAATCTAAACGGATTGGCGCAATGATAGATGAAATAG
GAATTGAGAAATTCAAAGAAGGAGTTGGGCTGTAA

Upstream 100 bases:

>100_bases
CAACTCAGTTTTTGCTCCGATGTCCGGATATAGGGCTCAGGCTAGCCGATAATTAGATCCTTAAACAAACTTGAACTATT
AACATGGAGAGTGTAAAAGC

Downstream 100 bases:

>100_bases
GCAGCCCTATATATTACTGGACAGTGGTTAAATCGGTTCATATGAGTCGATCTCAAATAGCTGTTCTAATCAGTCCTATC
TAGCAAGTAATTTTAAATGA

Product: sulfite reductase, assimilatory-type

Products: 3 NAD(P)+; NH4OH; H2O [C]

Alternate protein names: NA

Number of amino acids: Translated: 224; Mature: 223

Protein sequence:

>224_residues
MTKEYVKGDLPEKAAILQRDGETYAIAPHIPGGIVYPETLRKLADIAEKYGAAALKVTSAQRIAVVGLKEEDLDSAWGEL
GMKPGAAIGLCVRSVKICPGTTFCKRGKQDSVGLGLKLDEKYHGMQLPSKFKMGVSGCQNSCSETIIKDVGIVGTAKGFN
VSVGGNAGPRPRLGEVVAKDLSEEQVLDLVERIINFYKGYGKSKRIGAMIDEIGIEKFKEGVGL

Sequences:

>Translated_224_residues
MTKEYVKGDLPEKAAILQRDGETYAIAPHIPGGIVYPETLRKLADIAEKYGAAALKVTSAQRIAVVGLKEEDLDSAWGEL
GMKPGAAIGLCVRSVKICPGTTFCKRGKQDSVGLGLKLDEKYHGMQLPSKFKMGVSGCQNSCSETIIKDVGIVGTAKGFN
VSVGGNAGPRPRLGEVVAKDLSEEQVLDLVERIINFYKGYGKSKRIGAMIDEIGIEKFKEGVGL
>Mature_223_residues
TKEYVKGDLPEKAAILQRDGETYAIAPHIPGGIVYPETLRKLADIAEKYGAAALKVTSAQRIAVVGLKEEDLDSAWGELG
MKPGAAIGLCVRSVKICPGTTFCKRGKQDSVGLGLKLDEKYHGMQLPSKFKMGVSGCQNSCSETIIKDVGIVGTAKGFNV
SVGGNAGPRPRLGEVVAKDLSEEQVLDLVERIINFYKGYGKSKRIGAMIDEIGIEKFKEGVGL

Specific function: This enzyme catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L-cysteine from sulfate [H]

COG id: COG1251

COG function: function code C; NAD(P)H-nitrite reductase

Gene ontology:

Cell location: Cytoplasm [C]

Metaboloic importance: Non_Essential [C]

Operon status: Not Known

Operon components: None

Similarity: NA

Homologues:

Organism=Escherichia coli, GI1789765, Length=186, Percent_Identity=40.8602150537634, Blast_Score=149, Evalue=1e-37,

Paralogues:

None

Copy number: NA

Swissprot (AC and ID): NA

Other databases:

- InterPro:   IPR005117
- InterPro:   IPR006067
- InterPro:   IPR006066
- InterPro:   IPR017220 [H]

Pfam domain/function: PF01077 NIR_SIR; PF03460 NIR_SIR_ferr [H]

EC number: 1.7.1.4 [C]

Molecular weight: Translated: 23945; Mature: 23814

Theoretical pI: Translated: 8.69; Mature: 8.69

Prosite motif: PS00365 NIR_SIR

Important sites: NA

Signals:

None

Transmembrane regions:

None

Cys/Met content:

2.2 %Cys     (Translated Protein)
2.2 %Met     (Translated Protein)
4.5 %Cys+Met (Translated Protein)
2.2 %Cys     (Mature Protein)
1.8 %Met     (Mature Protein)
4.0 %Cys+Met (Mature Protein)

Secondary structure:

>Translated Secondary Structure
MTKEYVKGDLPEKAAILQRDGETYAIAPHIPGGIVYPETLRKLADIAEKYGAAALKVTSA
CCCCCCCCCCCHHHHHHHCCCCEEEECCCCCCCCCCHHHHHHHHHHHHHHCCCEEEECCC
QRIAVVGLKEEDLDSAWGELGMKPGAAIGLCVRSVKICPGTTFCKRGKQDSVGLGLKLDE
CEEEEEECCHHHHHHHHHHCCCCCCHHHHHHHHHHHCCCCCHHHHCCCCCCCCCCEEECC
KYHGMQLPSKFKMGVSGCQNSCSETIIKDVGIVGTAKGFNVSVGGNAGPRPRLGEVVAKD
CCCCCCCCHHHHHHHHHHHHHHHHHHHHHHCCEECCCCCEEEECCCCCCCCHHHHHHHHC
LSEEQVLDLVERIINFYKGYGKSKRIGAMIDEIGIEKFKEGVGL
CCHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHHCCCC
>Mature Secondary Structure 
TKEYVKGDLPEKAAILQRDGETYAIAPHIPGGIVYPETLRKLADIAEKYGAAALKVTSA
CCCCCCCCCCHHHHHHHCCCCEEEECCCCCCCCCCHHHHHHHHHHHHHHCCCEEEECCC
QRIAVVGLKEEDLDSAWGELGMKPGAAIGLCVRSVKICPGTTFCKRGKQDSVGLGLKLDE
CEEEEEECCHHHHHHHHHHCCCCCCHHHHHHHHHHHCCCCCHHHHCCCCCCCCCCEEECC
KYHGMQLPSKFKMGVSGCQNSCSETIIKDVGIVGTAKGFNVSVGGNAGPRPRLGEVVAKD
CCCCCCCCHHHHHHHHHHHHHHHHHHHHHHCCEECCCCCEEEECCCCCCCCHHHHHHHHC
LSEEQVLDLVERIINFYKGYGKSKRIGAMIDEIGIEKFKEGVGL
CCHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHHCCCC

PDB accession: NA

Resolution: NA

Structure class: Unstructured

Cofactors: FAD; NAD+; NADH; Siroheme [C]

Metal ions: Iron [C]

Kcat value (1/min): NA

Specific activity: NA

Km value (mM): 0.4 {NO2-}} 0.005 {NO2-}} 0.016 {NADH}} 5.3 {hydroxylamine}} [C]

Substrates: 3 NAD(P)H; nitrite [C]

Specific reaction: 3 NAD(P)H + nitrite = 3 NAD(P)+ + NH4OH + H2O [C]

General reaction: Redox reaction [C]

Inhibitor: 1, 10-Phenanthroline; 2, 2'-Bipyridine; Arsenite; CN-; NAD+; NADP+; NaN3; p-Chloromercuribenzoate; SO32- [C]

Structure determination priority: 10.0

TargetDB status: NA

Availability: NA

References: 1911781 [H]