CTIP (Ps327) (RBBP8) Antibody – Rabbit Polyclonal

The protein encoded by this gene is a ubiquitously expressed nuclear protein. It is found among several proteins that bind directly to retinoblastoma protein, which regulates cell proliferation. This protein complexes with transcriptional co-repressor CTBP. It is also associated with BRCA1 and is thought to modulate the functions of BRCA1 in transcriptional regulation, DNA repair, and/or cell cycle checkpoint control. It is suggested that this gene may itself be a tumor suppressor acting in the same pathway as BRCA1. Three transcript variants encoding two different isoforms have been found for this gene. More transcript variants exist, but their full-length natures have not been determined. [provided by RefSeq, Jul 2008]

CtIP: a transcription factor containing C2H2 zinc fingers. May modulate the functions ascribed to BRCA1 in transcriptional regulation, DNA repair, and/or cell cycle checkpoint control. Interacts with CTBP, with the C-terminal (BRCT) domains of BRCA1, and with the retinoblastoma protein. Abundantly expressed in brain and the immune system and associated with immune system malignancies. Ionizing radiation induces its hyperphosphorylation and dissociation from BRCA1 in an ATM-dependent manner.

Protein type: EC 3.1.-.-; Transcription, coactivator/corepressor

Chromosomal Location of Human Ortholog: 18q11.2

Cellular Component: nucleoplasm; transcriptional repressor complex; nucleolus; nucleus

Molecular Function: protein binding; single-stranded DNA specific endodeoxyribonuclease activity; damaged DNA binding

Biological Process: regulation of transcription from RNA polymerase II promoter; mitosis; meiotic cell cycle; cell division; blastocyst hatching; negative regulation of transcription from RNA polymerase II promoter; G2/M transition DNA damage checkpoint; DNA repair; cell cycle checkpoint; DNA catabolic process, endonucleolytic; double-strand break repair via homologous recombination; G1/S transition of mitotic cell cycle

Disease: Jawad Syndrome; Seckel Syndrome 2