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CATH Superfamily 3.30.413.10

Sulfite Reductase Hemoprotein, domain 1

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Sulfite Reductase Hemoprotein, domain 1
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 4979: Nitrite reductase (NAD(P)H) subunit

There are 11 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Nitrite reductase (NAD(P)H). [EC: 1.7.1.4]
Ammonia + 3 NAD(P)(+) + 2 H(2)O = nitrite + 3 NAD(P)H.
  • The enzymes from the fungi Neurospora crassa, Emericella nidulans and Candida nitratophila and the bacterium Aliivibrio fischeri can use either NADPH or NADH as electron donor.
  • Cf. EC 1.7.1.15.
  • Formerly EC 1.6.6.4.
 1540 A0A009FR49 A0A009H6X0 A0A009H836 A0A009HAX8 A0A009IJR6 A0A009JGR0 A0A009KJ78 A0A009LKA3 A0A009MJM0 A0A009QJ44
(1530 more...)
Rubredoxin--NAD(+) reductase. [EC: 1.18.1.1]
2 reduced rubredoxin + NAD(+) + H(+) = 2 oxidized rubredoxin + NADH.
  • The enzyme from Clostridium acetobutylicum reduces rubredoxin, ferricyanide and dichlorophenolindophenol, but not ferredoxin or flavodoxin.
  • The reaction does not occur when NADPH is substituted for NADH.
  • Formerly EC 1.6.7.2.
 185 A0A077UGY3 A0A0B6FV23 A0A0D1JS62 A0A0D6IJV6 A0A0D8HQR5 A0A0E1APB3 A0A0E1C7H4 A0A0E1VQ85 A0A0E1XBM8 A0A0E8TMP6
(175 more...)
Transferred entry: 1.7.1.4. [EC: 1.6.6.4]
    		120 A0A024KQB8 A0A026V6V5 A0A027U0P1 A0A028APF1 A0A028EA02 A0A029HHT4 A0A029IIR2 A0A029KA21 A0A029PA80 A0A062Y6T3
    (110 more...)
    Nitrite reductase (NADH). [EC: 1.7.1.15]
    Ammonia + 3 NAD(+) + 2 H(2)O = nitrite + 3 NADH.
    • This prokaryotic enzyme is specific for NADH.
    • In addition to catalyzing the 6-electron reduction of nitrite to ammonia, the enzyme from Escherichia coli can also catalyze the 2-electron reduction of hydroxylamine to ammonia.
    • cf. EC 1.7.1.4.
    		 52 A0A069XPE7 A0A070SP09 A0A081N7E8 A0A084FV34 A0A0A0TRD8 A0A0B8N2U0 A0A0C1NLJ6 A0A0D8B8F0 A0A0E0U4A8 A0A0E1M6U2
    (42 more...)
    Ferredoxin--NAD(+) reductase. [EC: 1.18.1.3]
    Reduced ferredoxin + NAD(+) = oxidized ferredoxin + NADH.
    • The reaction is written for a [2Fe-2S] ferredoxin, which is characteristic of some mono- and dioxygenase systems.
    • some anaerobic bacteria have a 2[4Fe-4S] ferredoxin, which transfers two electrons.
    		 25 A0A0D6G619 A0A0F6JAL1 A0A0J2HN49 A0A0T8G4L7 A0A0U0FY92 A0A111B069 A0A154B3N0 A0A157YWW1 A0A163VJ03 A0A168HKP9
    (15 more...)
    NADH dehydrogenase. [EC: 1.6.99.3]
    NADH + acceptor = NAD(+) + reduced acceptor.
    • After preparations have been subjected to certain treatments cytochrome c may act as acceptor.
    • Under normal conditions, two protons are extruded from the cytoplasm or the intramitochondrial or stromal compartment.
    • Present in a mitochondrial complex as EC 1.6.5.3.
    • Formerly EC 1.6.2.1.
    		 8 A0A0T8G4L7 A0A0T8XFY4 A0A0U0FY92 A0A111B069 A0A154B3N0 A0A1J3ZD08 B7HPC1 C2S323
    Ferredoxin--nitrite reductase. [EC: 1.7.7.1]
    NH(3) + 2 H(2)O + 6 oxidized ferredoxin = nitrite + 6 reduced ferredoxin + 7 H(+).
      		 2 A0A060T1C1 B3WFS5
      Nitrate reductase (NADH). [EC: 1.7.1.1]
      Nitrite + NAD(+) + H(2)O = nitrate + NADH.
      • Formerly EC 1.6.6.1.
      		 2 A4WBB1 C9XTU3
      Assimilatory sulfite reductase (ferredoxin). [EC: 1.8.7.1]
      Hydrogen sulfide + 6 oxidized ferredoxin [iron-sulfur] cluster + 3 H(2)O = sulfite + 6 reduced ferredoxin [iron-sulfur] cluster + 6 H(+).
      • The enzyme participates in sulfate assimilation.
      • While it is usually found in cyanobacteria, plants and algae, it has also been reported in bacteria (cf. EC 1.8.1.2).
      • Formerly EC 1.8.99.1.
      		 2 A0A0T9RHD6 A0A0U0E398
      DNA-directed RNA polymerase. [EC: 2.7.7.6]
      Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
      • Catalyzes DNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time.
      • Can initiate a chain de novo.
      • In eukaryotes three forms of the enzyme have been distinguished on the basis of sensitivity of alpha-amanitin, and the type of RNA synthesized.
      • See also EC 2.7.7.19 and EC 2.7.7.48.
      		 1 A0A0C1ECQ4
      Transferred entry: 1.7.2.1. [EC: 1.7.99.3]
        		1 Q9URM3
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