Table 3

Proteins that physically interact with AP-2 transcription factors

Protein
Description
Domain of AP-2 proteins that interacts*
Function of interaction
Reference

APC
Adenomatous polyposis coli tumor suppressor
Basic region
Inhibition of β-catenin/TCF/LEF-dependent transcription
[16]
CITED2
Coactivator
DD
Transcriptional activation
[69]
CITED4
Coactivator
n.d.
Transcriptional activation
[70]
CDP
CCAAT displacement protein
DBD, DD
Repression of the hamster histone H3.2 promoter
[71]
DEK
Oncoprotein, chromatin remodeling
n.d.
Transcriptional activation
[72]
E1A
Transforming protein of adenovirus
DBD, DD
Repression of AP-2 target genes
[73]
c-Myc
Oncoprotein
Carboxyl terminus
Impairment of Myc/Max DNA-binding and transactivation
[14]
PARP
PolyADP-ribose polymerase
Carboxyl terminus
Transcriptional activation
[74]
PAX-6
Transcription factor
n.d.
Stimulation of gelatinase B activation
[75]
PC4
Coactivator

Transcriptional activation
[24]
P300/CBP
Coactivator
Amino terminus
Transcriptional activation
[69]
p53
Tumor suppressor
n.d.
Augmentation of p53-dependent transcription
[76]
RAP74
Subunit of transcription factor TFIIF
Central region containing DBD
Unknown
[74]
Rb
Retinoblastoma tumor suppressor
Amino terminus
Repression of the hamster histone H3.2 promoter; transcriptional activation of the E-cadherin gene
[77,78]
SP1
Transcription factor
Basic region
Transcriptional activation of the ovine CYP11A1 gene
[79]
SV40T
Transforming protein of SV40 virus
n.d.
Blocks DNA binding of AP-2 protein
[12]
UBC9
E2-conjugating enzyme
DBD, DD
Sumoylation
[80]
WWOX
Tumor suppressor
Amino terminus PY motif
Cytoplasmic localization PPPY motif
[17]
YB-1
Transcription factor
n.d.
Stimulation of gelatinase A transcription
[81]
YY1
Transcription factor
DBD, DD
Stimulation of the hamster histone H3.2 promoter
[82]

*Abbreviations: DBD, DNA-binding domain; DD, dimerization domain; n.d., not determined. It is currently not entirely clear whether Rb binds AP-2 only via the amino terminus [78], or whether the DNA-binding domain is also necessary [77].

Eckert et al. Genome Biology 2005 6:246   doi:10.1186/gb-2005-6-13-246