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:

"
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 3: Sulfite reductase [NADPH] hemoprotein beta-compone...

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
Sulfite reductase (NADPH) activity GO:0004783
Catalysis of the reaction: hydrogen sulfide + 3 NADP+ + 3 H2O = sulfite + 3 NADPH + 3 H+.
7 Q8EB00 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS)
Heme binding GO:0020037
Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
4 P17846 (/IDA) P17846 (/IDA) P17846 (/IDA) P17846 (/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.
4 P17846 (/IDA) P17846 (/IDA) P17846 (/IDA) P17846 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
2 Q9LZ66 (/ISS) Q9LZ66 (/ISS)
Copper ion binding GO:0005507
Interacting selectively and non-covalently with copper (Cu) ions.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
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).
2 P72854 (/IPI) P72854 (/IPI)
Sulfite reductase activity GO:0016002
Catalysis of the reaction: hydrogen sulfide + acceptor + 3 H2O = sulfite + reduced acceptor.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Sulfite reductase (ferredoxin) activity GO:0050311
Catalysis of the reaction: hydrogen sulfide + 3 oxidized ferredoxin + 3 H2O = sulfite + 3 reduced ferredoxin.
2 Q9LZ66 (/IMP) Q9LZ66 (/IMP)

There are 11 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
Sulfur compound metabolic process GO:0006790
The chemical reactions and pathways involving the nonmetallic element sulfur or compounds that contain sulfur, such as the amino acids methionine and cysteine or the tripeptide glutathione.
7 Q8EB00 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS)
Sulfur amino acid biosynthetic process GO:0000097
The chemical reactions and pathways resulting in the formation of amino acids containing sulfur, comprising cysteine, methionine and selenocysteine.
5 A0A1D8PHL8 (/IMP) P47169 (/IMP) P47169 (/IMP) P47169 (/IMP) P47169 (/IMP)
Sulfate assimilation GO:0000103
The pathways by which inorganic sulfate is processed and incorporated into sulfated compounds.
5 P47169 (/IMP) P47169 (/IMP) P47169 (/IMP) P47169 (/IMP) Q1K9C2 (/IMP)
Regulation of DNA replication GO:0006275
Any process that modulates the frequency, rate or extent of DNA replication.
2 Q9LZ66 (/ISS) Q9LZ66 (/ISS)
DNA packaging GO:0006323
Any process in which DNA and associated proteins are formed into a compact, orderly structure.
2 Q9LZ66 (/ISS) Q9LZ66 (/ISS)
Sulfur compound metabolic process GO:0006790
The chemical reactions and pathways involving the nonmetallic element sulfur or compounds that contain sulfur, such as the amino acids methionine and cysteine or the tripeptide glutathione.
2 Q9LZ66 (/IMP) Q9LZ66 (/IMP)
Response to cold GO:0009409
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cold stimulus, a temperature stimulus below the optimal temperature for that organism.
2 Q9LZ66 (/IEP) Q9LZ66 (/IEP)
Response to salt stress GO:0009651
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of salt (particularly but not exclusively sodium and chloride ions) in the environment.
2 Q9LZ66 (/IEP) Q9LZ66 (/IEP)
Sulfide oxidation, using siroheme sulfite reductase GO:0019424
A sulfide oxidation process that proceeds via the reaction catalyzed by siroheme sulfite reductase.
2 Q9LZ66 (/ISS) Q9LZ66 (/ISS)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
2 Q9LZ66 (/ISS) Q9LZ66 (/ISS)
Hydrogen sulfide biosynthetic process GO:0070814
The chemical reactions and pathways resulting in the formation of hydrogen sulfide, H2S.
1 Q1K9C2 (/IMP)

There are 16 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
Sulfite reductase complex (NADPH) GO:0009337
A multisubunit iron flavoprotein, which in yeast is composed of 2 alpha and 2 beta subunits. Catalyzes the reduction of sulfite to sulfide.
8 P17846 (/IDA) P17846 (/IDA) P17846 (/IDA) P17846 (/IDA) P47169 (/IDA) P47169 (/IDA) P47169 (/IDA) P47169 (/IDA)
Sulfite reductase complex (NADPH) GO:0009337
A multisubunit iron flavoprotein, which in yeast is composed of 2 alpha and 2 beta subunits. Catalyzes the reduction of sulfite to sulfide.
6 Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS) Q9KUX3 (/ISS)
Fungal-type vacuole GO:0000324
A vacuole that has both lytic and storage functions. The fungal vacuole is a large, membrane-bounded organelle that functions as a reservoir for the storage of small molecules (including polyphosphate, amino acids, several divalent cations (e.g. calcium), other ions, and other small molecules) as well as being the primary compartment for degradation. It is an acidic compartment, containing an ensemble of acid hydrolases. At least in S. cerevisiae, there are indications that the morphology of the vacuole is variable and correlated with the cell cycle, with logarithmically growing cells having a multilobed, reticulated vacuole, while stationary phase cells contain a single large structure.
4 P47169 (/HDA) P47169 (/HDA) P47169 (/HDA) P47169 (/HDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
4 P47169 (/HDA) P47169 (/HDA) P47169 (/HDA) P47169 (/HDA)
Cytoplasmic stress granule GO:0010494
A dense aggregation in the cytosol composed of proteins and RNAs that appear when the cell is under stress.
4 P47169 (/IDA) P47169 (/IDA) P47169 (/IDA) P47169 (/IDA)
Cell periphery GO:0071944
The part of a cell encompassing the cell cortex, the plasma membrane, and any external encapsulating structures.
4 P47169 (/HDA) P47169 (/HDA) P47169 (/HDA) P47169 (/HDA)
Chloroplast GO:0009507
A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Plastid GO:0009536
Any member of a family of organelles found in the cytoplasm of plants and some protists, which are membrane-bounded and contain DNA. Plant plastids develop from a common type, the proplastid.
2 Q9LZ66 (/TAS) Q9LZ66 (/TAS)
Chloroplast stroma GO:0009570
The space enclosed by the double membrane of a chloroplast but excluding the thylakoid space. It contains DNA, ribosomes and some temporary products of photosynthesis.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Chloroplast envelope GO:0009941
The double lipid bilayer enclosing the chloroplast and separating its contents from the rest of the cytoplasm; includes the intermembrane space.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Stromule GO:0010319
Thin filamentous structure extending from the surface of all plastid types examined so far, including chloroplast, proplastid, etioplast, leucoplast, amyloplast, and chromoplast. In general, stromules are more abundant in tissues containing non-green plastids, and in cells containing smaller plastids. The primary function of stromules is still unresolved, although the presence of stromules markedly increases the plastid surface area, potentially increasing transport to and from the cytosol. Other functions of stromules, such as transfer of macromolecules between plastids and starch granule formation in cereal endosperm, may be restricted to particular tissues and cell types.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Chloroplast nucleoid GO:0042644
The region of a chloroplast to which the DNA is confined.
2 Q9LZ66 (/ISS) Q9LZ66 (/ISS)
Apoplast GO:0048046
The cell membranes and intracellular regions in a plant are connected through plasmodesmata, and plants may be described as having two major compartments: the living symplast and the non-living apoplast. The apoplast is external to the plasma membrane and includes cell walls, intercellular spaces and the lumen of dead structures such as xylem vessels. Water and solutes pass freely through it.
2 Q9LZ66 (/IDA) Q9LZ66 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 Q1K9C2 (/HDA)
Sulfite reductase complex (NADPH) GO:0009337
A multisubunit iron flavoprotein, which in yeast is composed of 2 alpha and 2 beta subunits. Catalyzes the reduction of sulfite to sulfide.
1 Q1K9C2 (/ISO)