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:

"
Ribonuclease H-like superfamily/Ribonuclease H
".

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 46015: Cruciform cutting endonuclease 1, mitochondrial

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 9 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
Four-way junction DNA binding GO:0000400
Interacting selectively and non-covalently with DNA containing four-way junctions, also known as Holliday junctions, a structure where two DNA double strands are held together by reciprocal exchange of two of the four strands, one strand each from the two original helices.
1 Q10423 (/IDA)
Crossed form four-way junction DNA binding GO:0000402
Interacting selectively and non-covalently with DNA containing the crossed form of a four-way junction, also known as a Holliday junction, a structure where two DNA double strands are held together by reciprocal exchange of two of the four strands, one strand each from the two original helices. The crossed form of a four-way junction cannot be diagrammed without any of the strands crossing over, and instead contains a single crossover between two of the strands.
1 Q10423 (/IDA)
Y-form DNA binding GO:0000403
Interacting selectively and non-covalently with segment of DNA shaped like a Y. This shape occurs when DNA contains a region of paired double-stranded DNA on one end and a region of unpaired DNA strands on the opposite end.
1 Q10423 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 Q10423 (/IMP)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 P07266 (/IDA)
Endodeoxyribonuclease activity GO:0004520
Catalysis of the hydrolysis of ester linkages within deoxyribonucleic acid by creating internal breaks.
1 Q03702 (/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).
1 Q10423 (/IPI)
Crossover junction endodeoxyribonuclease activity GO:0008821
Catalysis of the endonucleolytic cleavage at a junction such as a reciprocal single-stranded crossover between two homologous DNA duplexes (Holliday junction).
1 Q10423 (/IDA)
Flap-structured DNA binding GO:0070336
Interacting selectively and non-covalently with a flap structure in DNA. A DNA flap structure is one in which a single-stranded length of DNA or RNA protrudes from a double-stranded DNA molecule.
1 Q10423 (/IDA)

There are 4 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
Mitochondrial genome maintenance GO:0000002
The maintenance of the structure and integrity of the mitochondrial genome; includes replication and segregation of the mitochondrial chromosome.
1 Q03702 (/IGI)
Mitochondrial genome maintenance GO:0000002
The maintenance of the structure and integrity of the mitochondrial genome; includes replication and segregation of the mitochondrial chromosome.
1 Q10423 (/IMP)
Group I intron splicing GO:0000372
The splicing of Group I introns. This occurs by a ribozymic mechanism where the intron sequence forms a distinct 3D structure, characteristic of Group I introns and involved in determining the locations of the splice sites (there do not appear to be consensus splice site sequences) as well as having a role in catalyzing the splicing reactions, though protein factors are also required in vivo. Splicing occurs by a series of two transesterification reactions, generally with exogenous guanosine as the initiating nucleophile. The intron is excised as a linear piece (though it may subsequently circularize).
1 P07266 (/IDA)
Mitochondrial DNA metabolic process GO:0032042
The chemical reactions and pathways involving mitochondrial DNA.
1 Q10423 (/IMP)

There are 3 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
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q10423 (/IDA)
Mitochondrion GO:0005739
A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
1 Q10423 (/IDA)
Mitochondrial inner membrane GO:0005743
The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
1 Q03702 (/IDA)