Table 1 Proteins coprecipitated with MBD3 in the immunoprecipitation assay with the antibody directed against MBD3 followed by mass spectrometry.

From: MBD3 expression and DNA binding patterns are altered in a rat model of temporal lobe epilepsy

Protein name

Selected protein functions

Peptide #

Anty-IgG

anty-MBD3

PPP2CB, Serine/threonine-protein phosphatase 2A catalytic subunit beta isoform

modulates the activity of phosphorylase B kinase casein kinase 2, mitogen-stimulated S6 kinase and MAP-2 kinase

0

5

APAF1, Apoptotic protease-activating factor 1

mediates the cytochrome c-dependent autocatalytic activation of pro-caspase-9 (Apaf-3), leading to the activation of caspase-3 and apoptosis

0

5

HDAC2, Histone deacetylase 2

deacetylates lysine residues on the N-terminal part of the core histones (H2A, H2B, H3 and H4)

0

3

MBD3, Methyl-CpG binding domain protein 3

acts as transcriptional repressor and plays a role in gene silencing; binds to DNA with a preference for sites containing methylated CpG dinucleotides; recruits histone deacetylases and DNA methyltransferases

0

2

ILF2, Interleukin enhancer-binding factor 2

transcription factor regulating transcription of the IL2 gene

0

2

NEFM, Neurofilament medium polypeptide

involved in the maintenance of neuronal caliber

0

2

GATAD2B, Transcriptional repressor p66-beta

Enhances MBD2-mediated repression; targets MBD3 to discrete loci in the nucleus

0

1

RBBP4, Histone-binding protein RBBP4

core histone-binding subunit that may target chromatin assembly factors, chromatin remodeling factors and histone deacetylases to their histone substrates in a manner that is regulated by nucleosomal DNA; component of several complexes which regulate chromatin metabolism.

0

1

MTA1/2, Metastasis-associated protein 1/2

transcriptional coregulator which can act as both a transcriptional corepressor and coactivator.

0

1

SRSF1, Serine/arginine-rich splicing factor 1

can either activate or repress splicing, depending on its phosphorylation state and its interaction partners

0

1

AMPD3, Adenosine monophosphate deaminase 3

plays a critical role in energy metabolism.

0

1

PPP1R9A, Neurabin-1

binds to actin filaments; may be involved in neurite formation

0

1

AAK1, AP2-associated protein kinase 1

Regulates clathrin-mediated

0

1

SYT7, Synaptotagmin-7

involved in Ca2+-dependent exocytosis of secretory vesicles

0

1

  1. proteins that constitute NuRD complex are indicated in bold; protein functions were assigned on the basis of http://www.uniprot.org and http://www.genecards.org.