The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
nitrate reductase tail
".

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 1: Respiratory nitrate reductase subunit alpha

Please note: GO 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.

There are 8 GO terms relating to "molecular function"

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.
GO Term Annotations Evidence
Protein binding GO:0005515
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
26 P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P09152 (/IPI) P19319 (/IPI)
(16 more)
Nitrate reductase activity GO:0008940
Catalysis of the reaction: nitrite + acceptor = nitrate + reduced acceptor.
26 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P19319 (/IDA)
(16 more)
Molybdopterin cofactor binding GO:0043546
Interacting selectively and non-covalently with the molybdopterin cofactor (Moco), essential for the catalytic activity of some enzymes, e.g. sulfite oxidase, xanthine dehydrogenase, and aldehyde oxidase. The cofactor consists of a mononuclear molybdenum (Mo-molybdopterin) or tungsten ion (W-molybdopterin) coordinated by one or two molybdopterin ligands.
17 P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM) P19319 (/ISM)
(7 more)
Nitrate reductase activity GO:0008940
Catalysis of the reaction: nitrite + acceptor = nitrate + reduced acceptor.
9 P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP)
Electron transfer activity GO:0009055
Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
9 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA)
Molybdopterin cofactor binding GO:0043546
Interacting selectively and non-covalently with the molybdopterin cofactor (Moco), essential for the catalytic activity of some enzymes, e.g. sulfite oxidase, xanthine dehydrogenase, and aldehyde oxidase. The cofactor consists of a mononuclear molybdenum (Mo-molybdopterin) or tungsten ion (W-molybdopterin) coordinated by one or two molybdopterin ligands.
9 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA)
4 iron, 4 sulfur cluster binding GO:0051539
Interacting selectively and non-covalently with a 4 iron, 4 sulfur (4Fe-4S) cluster; this cluster consists of four iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands.
9 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA)
Nitrate reductase activity GO:0008940
Catalysis of the reaction: nitrite + acceptor = nitrate + reduced acceptor.
2 Q81RC4 (/ISS) Q81RC4 (/ISS)

There are 5 GO terms relating to "biological process"

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.
GO Term Annotations Evidence
Anaerobic respiration GO:0009061
The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
17 P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA)
(7 more)
Anaerobic electron transport chain GO:0019645
A process in which a series of electron carriers operate together to transfer electrons from donors such as NADH and FADH2 to any of several different terminal electron acceptors other than oxygen to generate a transmembrane electrochemical gradient.
17 P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA)
(7 more)
Anaerobic respiration GO:0009061
The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
9 P09152 (/IEP) P09152 (/IEP) P09152 (/IEP) P09152 (/IEP) P09152 (/IEP) P09152 (/IEP) P09152 (/IEP) P09152 (/IEP) P09152 (/IEP)
Nitrate metabolic process GO:0042126
The chemical reactions and pathways involving nitrates, inorganic or organic salts and esters of nitric acid.
9 P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP) P09152 (/IMP)
Anaerobic electron transport chain GO:0019645
A process in which a series of electron carriers operate together to transfer electrons from donors such as NADH and FADH2 to any of several different terminal electron acceptors other than oxygen to generate a transmembrane electrochemical gradient.
2 Q81RC4 (/ISS) Q81RC4 (/ISS)

There are 6 GO terms relating to "cellular component"

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.
GO Term Annotations Evidence
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
26 P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P09152 (/HDA) P19319 (/HDA)
(16 more)
Nitrate reductase complex GO:0009325
An enzyme complex that catalyzes the formation of nitrate from nitrite with the concomitant reduction of an acceptor.
17 P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA) P19319 (/IDA)
(7 more)
Intrinsic component of membrane GO:0031224
The component of a membrane consisting of the gene products having some covalently attached portion, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, which spans or is embedded in one or both leaflets of the membrane.
9 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA)
Intrinsic component of the cytoplasmic side of the plasma membrane GO:0031235
The component of a plasma membrane consisting of gene products and protein complexes that have some covalently attached part (e.g. peptide sequence or GPI anchor) which is embedded in the cytoplasmic side of the plasma membrane only.
9 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA)
NarGHI complex GO:0044799
A heterotrimeric protein complex with iron-sulfur and molybdenum cofactors that functions as a terminal reductase in electron transport pathways that operate during anaerobic nitrate respiration. In E. coli electrons are passed from the FdnGHI complex to the NarGHI complex via menoquinone and menaquinol. Within NarGHI, electrons are passed from the two heme molecules in the NarI subunit down a Fe-S cluster chain in the NarH and NarG subunits to the Molybdenum cofactor, Mo-bisMGD, in the NarG subunit.
9 P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA) P09152 (/IDA)
Nitrate reductase complex GO:0009325
An enzyme complex that catalyzes the formation of nitrate from nitrite with the concomitant reduction of an acceptor.
2 Q81RC4 (/ISS) Q81RC4 (/ISS)