CDY1B Gene

Name chromodomain protein, Y-linked, 1B
Description This gene encodes a protein containing a chromodomain and a histone acetyltransferase catalytic domain. Chromodomain proteins are components of heterochromatin-like complexes and can act as gene repressors. This protein is localized to the nucleus of late spermatids where histone hyperacetylation takes place. Histone hyperacetylation is thought to facilitate the transition in which protamines replace histones as the major DNA-packaging protein. The human chromosome Y has two identical copies of this gene within a palindromic region; this record represents the more centromeric copy. Chromosome Y also contains a pair of closely related genes in another more telomeric palindrome as well as several related pseudogenes. Two protein isoforms are encoded by transcript variants of this gene. Additional transcript variants have been described, but their full-length nature has not been determined. [provided by RefSeq, Jul 2008]
Summary
{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent findings have highlighted that CDY1B, one of the multi‐copy genes in the AZFc region normally expressed in the testis, plays a critical role in spermatogenesis. In a study of Tunisian men, a novel deletion type, termed gr/gr-DAZ2-DAZ4-CDY1b, was identified, suggesting that loss of CDY1B alongside specific DAZ copies is closely associated with impaired sperm production and reduced semen quality. This deletion appears to confer a relatively high risk for male infertility, underlining the importance of CDY1B in maintaining normal testicular function and its potential value as a biomarker in evaluating reproductive health."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Myriam Ghorbel, Siwar Baklouti-Gargouri, Rim Keskes, et al. "}, {"type": "b", "children": [{"type": "t", "text": "gr/gr-DAZ2-DAZ4-CDY1b deletion is a high-risk factor for male infertility in Tunisian population."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Gene (2016)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.gene.2016.07.050"}], "href": "https://doi.org/10.1016/j.gene.2016.07.050"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "27457284"}], "href": "https://pubmed.ncbi.nlm.nih.gov/27457284"}]}]}]}
NCBI Gene ID 253175
API
Download Associations
Predicted Functions View CDY1B's ARCHS4 Predicted Functions.
Co-expressed Genes View CDY1B's ARCHS4 Predicted Functions.
Expression in Tissues and Cell Lines View CDY1B's ARCHS4 Predicted Functions.

Functional Associations

CDY1B has 543 functional associations with biological entities spanning 6 categories (molecular profile, functional term, phrase or reference, disease, phenotype or trait, structural feature, cell line, cell type or tissue, gene, protein or microRNA) extracted from 26 datasets.

Click the + buttons to view associations for CDY1B from the datasets below.

If available, associations are ranked by standardized value

Dataset Summary
Allen Brain Atlas Aging Dementia and Traumatic Brain Injury Tissue Sample Gene Expression Profiles tissue samples with high or low expression of CDY1B gene relative to other tissue samples from the Allen Brain Atlas Aging Dementia and Traumatic Brain Injury Tissue Sample Gene Expression Profiles dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores cellular components containing CDY1B protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores 2025 cellular components containing CDY1B protein from the COMPARTMENTS Curated Protein Localization Evidence Scores 2025 dataset.
COMPARTMENTS Text-mining Protein Localization Evidence Scores cellular components co-occuring with CDY1B protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores dataset.
COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 cellular components co-occuring with CDY1B protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores diseases co-occuring with CDY1B gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores 2025 diseases co-occuring with CDY1B gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores 2025 dataset.
DisGeNET Gene-Disease Associations diseases associated with CDY1B gene in GWAS and other genetic association datasets from the DisGeNET Gene-Disease Associations dataset.
DisGeNET Gene-Phenotype Associations phenotypes associated with CDY1B gene in GWAS and other genetic association datasets from the DisGeNET Gene-Phenoptype Associations dataset.
ENCODE Transcription Factor Binding Site Profiles transcription factor binding site profiles with transcription factor binding evidence at the promoter of CDY1B gene from the ENCODE Transcription Factor Binding Site Profiles dataset.
ENCODE Transcription Factor Targets transcription factors binding the promoter of CDY1B gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset.
GEO Signatures of Differentially Expressed Genes for Gene Perturbations gene perturbations changing expression of CDY1B gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles cell lines with high or low expression of CDY1B gene relative to other cell lines from the Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles dataset.
HuGE Navigator Gene-Phenotype Associations phenotypes associated with CDY1B gene by text-mining GWAS publications from the HuGE Navigator Gene-Phenotype Associations dataset.
InterPro Predicted Protein Domain Annotations protein domains predicted for CDY1B protein from the InterPro Predicted Protein Domain Annotations dataset.
JASPAR Predicted Human Transcription Factor Targets 2025 transcription factors regulating expression of CDY1B gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Human Transcription Factor Targets dataset.
JASPAR Predicted Transcription Factor Targets transcription factors regulating expression of CDY1B gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Transcription Factor Targets dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles cell lines with high or low copy number of CDY1B gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset.
NURSA Protein Complexes protein complexs containing CDY1B protein recovered by IP-MS from the NURSA Protein Complexes dataset.
Rummagene Transcription Factor Associations 2026 transcription factors regulating expression of CDY1B gene from the Rummagene Transcription Factor Associations 2026 dataset.
TargetScan Predicted Nonconserved microRNA Targets microRNAs regulating expression of CDY1B gene predicted using nonconserved miRNA seed sequences from the TargetScan Predicted Nonconserved microRNA Targets dataset.
TCGA Signatures of Differentially Expressed Genes for Tumors tissue samples with high or low expression of CDY1B gene relative to other tissue samples from the TCGA Signatures of Differentially Expressed Genes for Tumors dataset.
TISSUES Curated Tissue Protein Expression Evidence Scores tissues with high expression of CDY1B protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset.
TISSUES Curated Tissue Protein Expression Evidence Scores 2025 tissues with high expression of CDY1B protein from the TISSUES Curated Tissue Protein Expression Evidence Scores 2025 dataset.
TISSUES Text-mining Tissue Protein Expression Evidence Scores tissues co-occuring with CDY1B protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores dataset.
TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 tissues co-occuring with CDY1B protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 dataset.