MXI1

Entrez Summary: Expression of the c-myc gene, which produces an oncogenic transcription factor, is tightly regulated in normal cells but is frequently deregulated in human cancers. The protein encoded by this gene is a transcriptional repressor thought to negatively regulate MYC function, and is therefore a potential tumor suppressor. This protein inhibits the transcriptional activity of MYC by competing for MAX, another basic helix-loop-helix protein that binds to MYC and is required for its function. Defects in this gene are frequently found in patients with prostate tumors. Three alternatively spliced transcripts encoding different isoforms have been described. Additional alternatively spliced transcripts may exist but the products of these transcripts have not been verified experimentally. [provided by RefSeq, Jul 2008].
UniProt Summary: Transcriptional repressor. MXI1 binds with MAX to form a sequence-specific DNA-binding protein complex which recognizes the core sequence 5'-CAC[GA]TG-3'. MXI1 thus antagonizes MYC transcriptional activity by competing for MAX.

Pfam Domains GO Terms

Compound Hit Most Correlated Genes in Chemogenomics Tissues where Essential in the Avana Dataset (DepMap 20Q1)

Global Fraction of Cell Lines Where Essential: 0/726

Tissue	Fraction Of Cell Lines Where Essential
1290807.0	0/1
909776.0	0/1
bile duct	0/28
blood	0/28
bone	0/25
breast	0/33
central nervous system	0/56
cervix	0/4
colorectal	0/17
esophagus	0/13
fibroblast	0/1
gastric	0/15
kidney	0/21
liver	0/20
lung	0/75
lymphocyte	0/14
ovary	0/26
pancreas	0/24
peripheral nervous system	0/16
plasma cell	0/15
prostate	0/1
skin	0/24
soft tissue	0/7
thyroid	0/2
upper aerodigestive	0/22
urinary tract	0/29
uterus	0/5

Expression Distribution

Screen	Score
Ribavirin 10 to 15μM on day4 R04 exp160	-2.04
Ammonium tetrathiomolybdate 10μM R08 exp448	1.74
Arsenic trioxide 60μM R08 exp449	1.77

cytoplasmic sequestering of transcription factor
cytoplasmic sequestering of protein
RNA polymerase II transcription factor complex
maintenance of protein location
protein dimerization activity
negative regulation of DNA-binding transcription factor activity
maintenance of location
transcription corepressor activity
DNA-binding transcription repressor activity, RNA polymerase II-specific
RNA polymerase II regulatory region sequence-specific DNA binding
regulation of DNA-binding transcription factor activity
negative regulation of cell population proliferation
nucleolus
negative regulation of transcription by RNA polymerase II
negative regulation of molecular function
negative regulation of transcription, DNA-templated
negative regulation of nucleic acid-templated transcription
negative regulation of RNA biosynthetic process
negative regulation of RNA metabolic process
negative regulation of cellular macromolecule biosynthetic process
negative regulation of nucleobase-containing compound metabolic process
DNA binding
negative regulation of macromolecule biosynthetic process
negative regulation of cellular biosynthetic process
negative regulation of biosynthetic process
DNA-binding transcription factor activity, RNA polymerase II-specific
regulation of cell population proliferation
negative regulation of gene expression