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: waiting to be named.

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.

Superfamily: PHR domain

This superfamily includes the PHR domain which was first found in Pam, Highwire and RPM-1 proteins, that it is named after. PHR proteins are conserved, large multi-domain E3 ubiquitin ligases with modular architecture. PHR proteins presynaptically control synaptic growth and axon guidance and postsynaptically regulate endocytosis of glutamate receptors. Dysfunction of neuronal ubiquitin-mediated proteasomal degradation is implicated in various neurodegenerative diseases. PHR proteins are characterised by the presence of two PHR domains near the N-terminus, which are essential for proper localisation and function. The domain has a beta-sandwich fold composed of 11 anti-parallel beta-strands.

The C-terminal region of the protein BTBD1 includes the PHR domain and is known to interact with Topoisomerase I, an enzyme which relaxes DNA supercoils.

PFAM:PF08005,INTERPRO:IPR012983,DOI:10.1016/j.jmb.2010.02.017

GO Diversity

Unique GO annotations
74 Unique GO terms

EC Diversity

Unique EC annotations
3 Unique EC terms

Species Diversity

Unique species annotations
573 Unique species

Sequence/Structure Diversity

Overview of the sequence / structure diversity of this superfamily compared to other superfamilies in CATH. Click on the chart to view the data in more detail.

Superfamily Summary

A general summary of information for this superfamily.
Structures
Domains: 5
Domain clusters (>95% seq id): 3
Domain clusters (>35% seq id): 3
Unique PDBs: 3
Alignments
Structural Clusters (5A): 1
Structural Clusters (9A): 1
FunFam Clusters: 0
Function
Unique EC: 3
Unique GO: 74
Taxonomy
Unique Species: 573