Nonessential component of the UAF (upstream activation factor) complex which interacts with the upstream element of the RNA polymerase I promoter and forms a stable preinitiation complex. Together with SPT15/TBP UAF seems to stimulate basal transcription to a fully activated level. UAF30 seems to play a role in silencing transcription by RNA polymerase II. Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (taxid: 559292)
Component of the UAF (upstream activation factor) complex which interacts with the upstream element of the RNA polymerase I promoter and forms a stable preinitiation complex. UAF seems to stimulate basal transcription to a fully activated level.
Score = 42.7 bits (99), Expect = 7e-04, Method: Compositional matrix adjust.
Identities = 21/53 (39%), Positives = 33/53 (62%), Gaps = 2/53 (3%)
Query: 48 VWSYIKTNNLQDPNNKNVVNCDQKLRSILMGKSRVELAELPA-LIKLHFPKDP 99
+W YIKT+ LQDP+ + V CD+ L+ I + R++ +E+P L L P +P
Sbjct: 319 LWQYIKTHKLQDPHEREFVICDKYLQQIFESQ-RMKFSEIPQRLHALLMPPEP 370
Involved in chromatin remodeling. Has a strong influence on the Vitamin D-mediated transcriptional activity from an enhancer Vitamin D receptor element (VDRE). May be a link between mammalian SWI-SNF-like chromatin remodeling complexes and the vitamin D receptor (VDR) heterodimer. Mediates critical interactions between nuclear receptors and the BRG1/SMARCA4 chromatin-remodeling complex for transactivation. Also involved in vitamin D-coupled transcription regulation via its association with the WINAC complex, a chromatin-remodeling complex recruited by vitamin D receptor (VDR), which is required for the ligand-bound VDR-mediated transrepression of the CYP27B1 gene. Belongs to the neural progenitors-specific chromatin remodeling complex (npBAF complex) and the neuron-specific chromatin remodeling complex (nBAF complex). During neural development a switch from a stem/progenitor to a post-mitotic chromatin remodeling mechanism occurs as neurons exit the cell cycle and become committed to their adult state. The transition from proliferating neural stem/progenitor cells to post-mitotic neurons requires a switch in subunit composition of the npBAF and nBAF complexes. As neural progenitors exit mitosis and differentiate into neurons, npBAF complexes which contain ACTL6A/BAF53A and PHF10/BAF45A, are exchanged for homologous alternative ACTL6B/BAF53B and DPF1/BAF45B or DPF3/BAF45C subunits in neuron-specific complexes (nBAF). The npBAF complex is essential for the self-renewal/proliferative capacity of the multipotent neural stem cells. The nBAF complex along with CREST plays a role regulating the activity of genes essential for dendrite growth.
Bos taurus (taxid: 9913)
>sp|Q6P9Z1|SMRD3_MOUSE SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily D member 3 OS=Mus musculus GN=Smarcd3 PE=1 SV=2
Score = 42.4 bits (98), Expect = 8e-04, Method: Compositional matrix adjust.
Identities = 24/71 (33%), Positives = 36/71 (50%), Gaps = 2/71 (2%)
Query: 30 LREFVGQSRISRLGCFMRVWSYIKTNNLQDPNNKNVVNCDQKLRSILMGKSRVELAELPA 89
L +G SR +W Y+KTN LQD ++K +N D+ + I R++ +E+P
Sbjct: 269 LARLLGLHTQSRSAIVQALWQYVKTNRLQDSHDKEYINGDKYFQQIF-DCPRLKFSEIPQ 327
Query: 90 -LIKLHFPKDP 99
L L P DP
Sbjct: 328 RLTALLLPPDP 338
Plays a role in ATP dependent nucleosome remodeling by SMARCA4 containing complexes. Stimulates nuclear receptor mediated transcription (By similarity). Belongs to the neural progenitors-specific chromatin remodeling complex (npBAF complex) and the neuron-specific chromatin remodeling complex (nBAF complex). During neural development a switch from a stem/progenitor to a post-mitotic chromatin remodeling mechanism occurs as neurons exit the cell cycle and become committed to their adult state. The transition from proliferating neural stem/progenitor cells to post-mitotic neurons requires a switch in subunit composition of the npBAF and nBAF complexes. As neural progenitors exit mitosis and differentiate into neurons, npBAF complexes which contain ACTL6A/BAF53A and PHF10/BAF45A, are exchanged for homologous alternative ACTL6B/BAF53B and DPF1/BAF45B or DPF3/BAF45C subunits in neuron-specific complexes (nBAF). The npBAF complex is essential for the self-renewal/proliferative capacity of the multipotent neural stem cells. The nBAF complex along with CREST plays a role regulating the activity of genes essential for dendrite growth.
Mus musculus (taxid: 10090)
>sp|Q6STE5|SMRD3_HUMAN SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily D member 3 OS=Homo sapiens GN=SMARCD3 PE=1 SV=1
Score = 42.4 bits (98), Expect = 8e-04, Method: Compositional matrix adjust.
Identities = 24/71 (33%), Positives = 36/71 (50%), Gaps = 2/71 (2%)
Query: 30 LREFVGQSRISRLGCFMRVWSYIKTNNLQDPNNKNVVNCDQKLRSILMGKSRVELAELPA 89
L +G SR +W Y+KTN LQD ++K +N D+ + I R++ +E+P
Sbjct: 269 LARLLGLHTQSRSAIVQALWQYVKTNRLQDSHDKEYINGDKYFQQIF-DCPRLKFSEIPQ 327
Query: 90 -LIKLHFPKDP 99
L L P DP
Sbjct: 328 RLTALLLPPDP 338
Plays a role in ATP dependent nucleosome remodeling by SMARCA4 containing complexes. Stimulates nuclear receptor mediated transcription. Belongs to the neural progenitors-specific chromatin remodeling complex (npBAF complex) and the neuron-specific chromatin remodeling complex (nBAF complex). During neural development a switch from a stem/progenitor to a post-mitotic chromatin remodeling mechanism occurs as neurons exit the cell cycle and become committed to their adult state. The transition from proliferating neural stem/progenitor cells to post-mitotic neurons requires a switch in subunit composition of the npBAF and nBAF complexes. As neural progenitors exit mitosis and differentiate into neurons, npBAF complexes which contain ACTL6A/BAF53A and PHF10/BAF45A, are exchanged for homologous alternative ACTL6B/BAF53B and DPF1/BAF45B or DPF3/BAF45C subunits in neuron-specific complexes (nBAF). The npBAF complex is essential for the self-renewal/proliferative capacity of the multipotent neural stem cells. The nBAF complex along with CREST plays a role regulating the activity of genes essential for dendrite growth.
Homo sapiens (taxid: 9606)
Close Homologs in the Non-Redundant Database Detected by BLAST
This family includes the SWIB domain and the MDM2 domain. The p53-associated protein (MDM2) is an inhibitor of the p53 tumour suppressor gene binding the transactivation domain and down regulating the ability of p53 to activate transcription. This family contains the p53 binding domain of MDM2. Length = 76
>PF02201 SWIB: SWIB/MDM2 domain; InterPro: IPR003121 The SWI/SNF family of complexes, which are conserved from yeast to humans, are ATP-dependent chromatin-remodelling proteins that facilitate transcription activation []
The mammalian complexes are made up of 9-12 proteins called BAFs (BRG1-associated factors). The BAF60 family have at least three members: BAF60a, which is ubiquitous, BAF60b and BAF60c, which are expressed in muscle and pancreatic tissues, respectively. BAF60b is present in alternative forms of the SWI/SNF complex, including complex B (SWIB), which lacks BAF60a. The SWIB domain is a conserved region found within the BAF60b proteins [], and can be found fused to the C terminus of DNA topoisomerase in Chlamydia. MDM2 is an oncoprotein that acts as a cellular inhibitor of the p53 tumour suppressor by binding to the transactivation domain of p53 and suppressing its ability to activate transcription []. p53 acts in response to DNA damage, inducing cell cycle arrest and apoptosis. Inactivation of p53 is a common occurrence in neoplastic transformations. The core of MDM2 folds into an open bundle of four helices, which is capped by two small 3-stranded beta-sheets. It consists of a duplication of two structural repeats. MDM2 has a deep hydrophobic cleft on which the p53 alpha-helix binds; p53 residues involved in transactivation are buried deep within the cleft of MDM2, thereby concealing the p53 transactivation domain. The SWIB and MDM2 domains are homologous and share a common fold.; GO: 0005515 protein binding; PDB: 1V31_A 3FE7_A 3JZQ_B 3EQY_B 2VYR_A 3JZO_A 3DAB_E 3LBJ_E 3FEA_A 3FDO_A ....
>KOG1946 consensus RNA polymerase I transcription factor UAF [Transcription]