Part of the core histone deacetylase (HDAC) complex composed of
HDAC1,
HDAC2,
RBBP4 and
RBBP7. The core complex associates with
MTA2,
MBD2,
MBD3, MTA1L1,
CHD3 and
CHD4 to form the nucleosome remodeling and histone deacetylation (NuRD) complex, or with SIN3,
SAP18 and
SAP30 to form the SIN3 HDAC complex. Component of a BHC histone deacetylase complex that contains
HDAC1,
HDAC2,
HMG20B/BRAF35,
KDM1A,
RCOR1/CoREST and
PHF21A/BHC80. The BHC complex may also contain
ZMYM2,
ZNF217,
ZMYM3,
GSE1 and
GTF2I. Component of a mSin3A corepressor complex that contains
SIN3A,
SAP130,
SUDS3/SAP45,
ARID4B/
SAP180,
HDAC1 and
HDAC2. Found in a trimeric complex with
APBB1 and
TSHZ3; the interaction between
HDAC1 and
APBB1 is mediated by
TSHZ3. Component of a RCOR/GFI/
KDM1A/HDAC complex. Part of a complex composed of
TRIM28,
HDAC1,
HDAC2 and
EHMT2. Part of a complex containing at least
CDYL,
MIER1,
MIER2,
HDAC1 and
HDAC2. The large PER complex involved in the histone deacetylation is composed of at least
HDAC1,
PER2,
SFPQ and
SIN3A. Associates with the 9-1-1 complex; interacts with
HUS1. Found in a complex with
DNMT3A and
HDAC7. Interacts with the non-histone region of
H2AFY. Interacts with
TRIM28; the interaction recruits
HDAC1 to
E2F1 and inhibits its acetylation. Interacts with
SP1; the interaction deacetylates
SP1 and regulates its transcriptional activity. Interacts with
SP3; the interaction deacetylates
SP3 and regulates its transcriptional activity. In vitro, C(18) ceramides increase this interaction and the subsequent
SP3 deacetylation and
SP3-mediated repression of the
TERT promoter. Interacts with
TSHZ3 (via N-terminus); the interaction is direct. Interacts with
APEX1; the interaction is not dependent on the acetylated status of
APEX1. Interacts with
C10orf90/FATS (via its N-terminal); the interaction prevents binding of
HDAC1 to
CDKN1A/p21 and facilitates the acetylation and stabilization of
CDKN1A/p21. Interacts with
CDKN1A/p21. Interacts with
CDK5 complexed to
CDK5R1 (p25). Interacts directly with
GFI1 and
GFI1B. Interacts with
NR1D2 (via C-terminus). Interacts with
TSC22D3 isoform 1; this interaction affects
HDAC1 activity on
MYOG promoter and thus inhibits
MYOD1 transcriptional activity. Interacts with
BAZ2A/TIP5,
BANP,
BCL6,
BCOR,
BHLHE40/
DEC1,
BRMS1,
BRMS1L,
CBFA2T3,
CHFR,
CIART,
CRY1,
DAXX,
DDIT3/CHOP,
DDX5,
DNMT1,
E4F1,
EP300,
HCFC1,
HDAC9,
INSM1,
NFE4,
NR4A2/NURR1,
MIER1,
KDM4A,
KDM5B,
KLF1, MINT,
NRIP1, PCAF,
PHB2,
PRDM6,
PRDM16,
RB1,
RERE,
SAMSN1,
SAP30L,
SETDB1,
SMAD3,
SMARCA4/BRG1,
SMYD2,
SUV39H1, TGIF,
TGIF2,
TRAF6,
UHRF1,
UHRF2,
ZMYND15,
ZNF431 and
ZNF541. Interacts with
KDM5A (By similarity). Interacts with
DNTTIP1 (PubMed:25653165). Identified in a histone deacetylase complex that contains
DNTTIP1,
HDAC1 and
ELMSAN1; this complex assembles into a tetramer that contains four copies of each protein chain (PubMed:25653165). Interacts with
CCAR2 (PubMed:21030595). Interacts with
PPHLN1 (PubMed:17963697). Found in a complex with
YY1,
SIN3A and
GON4L (By similarity). Interacts with
CHD4 (PubMed:27616479). Found in a complex composed of at least
SINHCAF,
SIN3A,
HDAC1,
SAP30,
RBBP4,
OGT and
TET1. Interacts with
SIN3A (By similarity). Interacts with
DHX36; this interaction occurs in a RNA-dependent manner (PubMed:18279852). Interacts with
ZBTB7A (PubMed:25514493). Interacts with
SMAD4; positively regulated by
ZBTB7A (PubMed:25514493). Interacts with
PACS2 (PubMed:29656858). Forms a complex comprising
APPL1,
RUVBL2,
APPL2,
CTNNB1 and
HDAC2 (PubMed:19433865). Interacts with
ZNF638 (PubMed:30487602). Interacts with
SPHK2 (PubMed:19729656). Interacts with
ERCC6 (PubMed:26030138).
UniProt