Seroatlas · Protein domains

SCAN domain

IPR003309

Definition

A number of C2H2-zinc finger proteins contain a highly conserved N-terminal motif termed the SCAN (named after SRE-ZBP, CTfin51, AW-1 and Number 18 cDNA) domain. The SCAN domain has been shown to be able to mediate homo- and hetero-oligomerisation PMID:10567577. These proteins can either activate or repress transcription, although isolated recombinant SCAN domains do not modulate significantly the transcription [[cite:PMID:8065901], [cite:PMID:7673192]]. In addition to these zinc finger transcription factors, an isolated SCAN domain without adjacent zinc finger motifs has been identified in some proteins [[cite:PMID:10393183], [cite:PMID:10747874]]. It has been noted that the SCAN domain resembles a domain-swapped version of the C-terminal domain of the HIV capsid protein PMID:15629724. The SCAN domain is enriched in hydrophobic and negatively charged residues with a L-X(6)-L motif at its core. This core is flanked by A, E, L, M, H and C residues that are frequently found in α-helices PMID:7673192. Predictions of the secondary structure of the domain suggest the presence of at least three α-helices that are separated from one another by short looped regions bounded by proline residues PMID:10567577. It has been shown to be a selective oligomerization domain that mediates homotypic and heterotypic interactions between SCAN box containing proteins [[cite:PMID:10747874], [cite:PMID:10567577]].

60 human proteins with this domain

Each is a reviewed human protein in the Seroatlas serome and a potential autoantibody target; this domain groups them into one antibody-relevant category. Every entry links to its own record.

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