Molecular Target Synopsis
Overview
Domains and Structures
Drugs and Clinical Candidates
Druggability
Chemistry
Ligand Efficiency Plot
Pathways
Family Cladogram
Interaction Network
Gene Expression
Gene Copy Number Variation
RNAi
Mutations
Germline Genetics

ACTL6A (O96019) - Overview - Molecular Target Synopsis

Protein


ACTL6A, Actin-like protein 6A
UniProt O96019

Also Known as ACL6A_HUMAN, ACTL6A, BAF53, BAF53A, INO80K

Involved in transcriptional activation and repression of select genes by chromatin remodeling (alteration of DNA-nucleosome topology). Component of SWI/SNF chromatin remodeling complexes that carry out key enzymatic activities, changing chromatin structure by altering DNA-histone contacts within a nucleosome in an ATP-dependent manner. Required for maximal ATPase activity of SMARCA4/BRG1/BAF190A and for association of the SMARCA4/BRG1/BAF190A containing remodeling complex BAF with chromatin/nuclear matrix. Belongs to the neural progenitors-specific chromatin remodeling complex (npBAF complex) and is required for the proliferation of neural progenitors. During neural development a switch from a stem/progenitor to a postmitotic 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 postmitotic 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 (By similarity). Component of the NuA4 histone acetyltransferase (HAT) complex which is involved in transcriptional activation of select genes principally by acetylation of nucleosomal histones H4 and H2A. This modification may both alter nucleosome - DNA interactions and promote interaction of the modified histones with other proteins which positively regulate transcription. This complex may be required for the activation of transcriptional programs associated with oncogene and proto-oncogene mediated growth induction, tumor suppressor mediated growth arrest and replicative senescence, apoptosis, and DNA repair. NuA4 may also play a direct role in DNA repair when recruited to sites of DNA damage. Putative core component of the chromatin remodeling INO80 complex which is involved in transcriptional regulation, DNA replication and probably DNA repair. Component of numerous complexes with chromatin remodeling and histone acetyltransferase activity. Component of the NuA4 histone acetyltransferase complex which contains the catalytic subunit KAT5/TIP60 and the subunits EP400, TRRAP/PAF400, BRD8/SMAP, EPC1, DMAP1/DNMAP1, RUVBL1/TIP49, RUVBL2, ING3, actin, ACTL6A/BAF53A, MORF4L1/MRG15, MORF4L2/MRGX, MRGBP, YEATS4/GAS41, VPS72/YL1 and MEAF6 (PubMed:12963728, PubMed:10966108, PubMed:15196461, PubMed:14966270). The NuA4 complex interacts with MYC and the adenovirus E1A protein (PubMed:11509179). Component of a NuA4-related complex which contains EP400, TRRAP/PAF400, SRCAP, BRD8/SMAP, EPC1, DMAP1/DNMAP1, RUVBL1/TIP49, RUVBL2, actin, ACTL6A/BAF53A, VPS72 and YEATS4/GAS41 (PubMed:11509179, PubMed:14966270). Component of the multiprotein chromatin-remodeling complexes SWI/SNF: SWI/SNF-A (BAF), SWI/SNF-B (PBAF) and related complexes. The canonical complex contains a catalytic subunit (either SMARCA4/BRG1/BAF190A or SMARCA2/BRM/BAF190B) and at least SMARCE1, ACTL6A/BAF53, SMARCC1/BAF155, SMARCC2/BAF170, and SMARCB1/SNF5/BAF47. Other subunits specific to each of the complexes may also be present permitting several possible combinations developmentally and tissue specific (Probable). Component of the BAF complex, which includes at least actin (ACTB), ARID1A/BAF250A, ARID1B/BAF250B, SMARCA2/BRM, SMARCA4/BRG1/BAF190A, ACTL6A/BAF53, ACTL6B/BAF53B, SMARCE1/BAF57, SMARCC1/BAF155, SMARCC2/BAF170, SMARCB1/SNF5/INI1, and one or more SMARCD1/BAF60A, SMARCD2/BAF60B, or SMARCD3/BAF60C (PubMed:9845365, PubMed:18765789). In muscle cells, the BAF complex also contains DPF3. Component of the BAF53 complex, at least composed of ACTL6A/BAF53A, RUVBL1/TIP49, SMARCA2/BRM/BAF190B and TRRAP/PAF400, and which may also include a HAT activity related to, but distinct from, that of KAT5 (PubMed:11839798). Component of neural progenitors-specific chromatin remodeling complex (npBAF complex) composed of at least, ARID1A/BAF250A or ARID1B/BAF250B, SMARCD1/BAF60A, SMARCD3/BAF60C, SMARCA2/BRM/BAF190B, SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, SMARCC1/BAF155, SMARCE1/BAF57, SMARCC2/BAF170, PHF10/BAF45A, ACTL6A/BAF53A and actin. Component of SWI/SNF (GBAF) subcomplex, which includes at least BICRA or BICRAL (mutually exclusive), BRD9, SS18, SMARCA2/BRM, SMARCA4/BRG1/BAF190A, ACTL6A/BAF53, SMARCC1/BAF155, and SMARCD1/BAF60A (PubMed:29374058). May be a component of the SWI/SNF-B (PBAF) chromatin remodeling complex, at least composed of SMARCA4/BRG1, SMARCB1/BAF47/SNF5, ACTL6A/BAF53A or ACTL6B/BAF53B, SMARCE1/BAF57, SMARCD1/BAF60A, SMARCD2/BAF60B, perhaps SMARCD3/BAF60C, SMARCC1/BAF155, SMARCC2/BAF170, PBRM1/BAF180, ARID2/BAF200 and actin (PubMed:26601204). Interacts with SMARCA4/BRG1/BAF190A (PubMed:28649782). Interacts with PHF10/BAF45A (By similarity). Component of the chromatin remodeling INO80 complex; specifically part of a complex module associated with the DBINO domain of INO80 (PubMed:16230350, PubMed:18026119, PubMed:18922472, PubMed:21303910). Interacts with DPF2 (PubMed:28533407).

Isoforms / Transcripts (Protein Coding)


Sub-cellular localization


UniProt: ACTL6A is active in the following subcellular-locations: nucleus.
GO terms: ACTL6A is active in the following subcellular-locations: Ino80 complex, npBAF complex, NuA4 histone acetyltransferase complex, nuclear chromatin, nucleoplasm, nucleus, plasma membrane, protein-containing complex, SWI/SNF complex.



UniProt
GO terms

Gene Copy Number Variation


In COSMIC - Cell Lines Project ACTL6A has gain in 16 cell-lines, loss in 1 cell-lines and no signal in 988 cell-lines. (see details)

Gene Expression


In NCI60, the highest expressing cell lines are: T47D, COLO205, RPMI_8226

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: KYSE-70, BICR 22, HCC38

In Array Express (RNA-seq of long poly adenylated RNA and long non poly adenylated RNA from ENCODE cell lines), the highest expressing cell lines are: HeLa-S3, NHLF, MCF-7

(see details)

3D Structures


At greater than 35% identity similarity to ACTL6A there are:
80 structures (246 chains) solved
79 are solved in complex with at least one small molecule ligand



(see details)
Molecular Target 3D Synopsis

Screening and Chemistry


ACTL6A has been screened with compounds ( bioactivities). (see details)