| Interacting Domains ↕ | CD ↕ Accession (External Link) | Description ↕ |
|---|
SH2 | cd00173 | Src homology 2 (SH2) domain. In general, SH2 domains are involved in signal transduction; they bind pTyr-containing polypeptide ligands via two surface pockets, a pTyr and hydrophobic binding pocket, allowing proteins with SH2 domains to localize to tyrosine phosphorylated sites. They are present in a wide array of proteins including: adaptor proteins (Nck1, Crk, Grb2), scaffolds (Slp76, Shc, Dapp1), kinases (Src, Syk, Fps, Tec), phosphatases (Shp-1, Shp-2), transcription factors (STAT1), Ras signaling molecules (Ras-Gap), ubiquitination factors (c-Cbl), cytoskeleton regulators (Tensin), signal regulators (SAP), and phospholipid second messengers (PLCgamma), amongst others. | P53 | pfam00870 | P53 DNA-binding domain. P53 is a tumor suppressor gene product; mutations in p53 or lack of expression are found associated with a large fraction of all human cancers. P53 is activated by DNA damage and acts as a regulator of gene expression that ultimatively blocks progression through the cell cycle. P53 binds to DNA as a tetrameric transcription factor. In its inactive form, p53 is bound to the ring finger protein Mdm2, which promotes its ubiquitinylation and subsequent proteosomal degradation. Phosphorylation of p53 disrupts the Mdm2-p53 complex, while the stable and active p53 binds to regulatory regions of its target genes, such as the cyclin-kinase inhibitor p21, which complexes and inactivates cdk2 and other cyclin complexes. | Ank | pfam00023 | ankyrin repeats; ankyrin repeats mediate protein-protein interactions in very diverse families of proteins. The number of ANK repeats in a protein can range from 2 to over 20 (ankyrins, for example). ANK repeats may occur in combinations with other types of domains. The structural repeat unit contains two antiparallel helices and a beta-hairpin, repeats are stacked in a superhelical arrangement; this alignment contains 4 consecutive repeats. | p47_phox_C | pfam08944 | NADPH oxidase subunit p47Phox, C terminal domain. The C terminal domain of the phagocyte NADPH oxidase subunit p47Phox contains conserved PxxP motifs that allow binding to SH3 domains, with subsequent activation of the NADPH oxidase, and generation of superoxide, which plays a crucial role in host defense against microbial infection. | Pex14_N | pfam04695 | Peroxisomal membrane anchor protein (Pex14p) conserved region. Family of peroxisomal membrane anchor proteins which bind the PTS1 (peroxisomal targeting signal) receptor and are required for the import of PTS1-containing proteins into peroxisomes. Loss of functional Pex14p results in defects in both the PTS1 and PTS2-dependent import pathways. Deletion analysis of this conserved region implicates it in selective peroxisome degradation. In the majority of members this region is situated at the N-terminus of the protein. | Myc_N | pfam01056 | Myc amino-terminal region. The myc family belongs to the basic helix-loop-helix leucine zipper class of transcription factors, see pfam00010. Myc forms a heterodimer with Max, and this complex regulates cell growth through direct activation of genes involved in cell replication. Mutations in the C-terminal 20 residues of this domain cause unique changes in the induction of apoptosis, transformation, and G2 arrest. | Cytochrom_B558a | pfam05038 | Cytochrome Cytochrome b558 alpha-subunit. Cytochrome b-245 light chain (p22-phox) is one of the key electron transfer elements of the NADPH oxidase in phagocytes. | LIM | pfam00412 | LIM domain. This family represents two copies of the LIM structural domain. |
