HP6/Umbrea is dispensable for viability and fertility, suggesting essentiality of newly evolved genes is rare

S Grill, A Riley, M Selvaraj… - Proceedings of the …, 2023 - National Acad Sciences
The newly evolved gene Heterochromatin Protein 6 (HP6), which has been previously
classified as essential, challenged the dogma that functions required for viability are only …

[HTML][HTML] Phylogenomic analysis reveals dynamic evolutionary history of the Drosophila heterochromatin protein 1 (HP1) gene family

MT Levine, C McCoy, D Vermaak, YCG Lee… - PLoS …, 2012 - journals.plos.org
Heterochromatin is the gene-poor, satellite-rich eukaryotic genome compartment that
supports many essential cellular processes. The functional diversity of proteins that bind and …

Multiple Roles for Heterochromatin Protein 1 Genes in Drosophila

D Vermaak, HS Malik - Annual review of genetics, 2009 - annualreviews.org
Heterochromatin is the gene-poor, transposon-rich, late-replicating chromatin compartment
that was first cytologically defined more than 70 years ago. The identification of …

[HTML][HTML] Functional analysis of the Drosophila embryonic germ cell transcriptome by RNA interference

F Jankovics, L Henn, Á Bujna, P Vilmos, K Spirohn… - PloS one, 2014 - journals.plos.org
In Drosophila melanogaster, primordial germ cells are specified at the posterior pole of the
very early embryo. This process is regulated by the posterior localized germ plasm that …

The Role of Maternal HP1a in Early Drosophila Embryogenesis via Regulation of Maternal Transcript Production

AR Park, N Liu, N Neuenkirchen, Q Guo, H Lin - Genetics, 2019 - academic.oup.com
Heterochromatin protein 1a (HP1a) is a highly conserved and versatile epigenetic factor that
can both silence and activate transcription. However, the function of HP1a in development …

[HTML][HTML] Positive Selection Drives the Evolution of rhino, a Member of the Heterochromatin Protein 1 Family in Drosophila

D Vermaak, S Henikoff, HS Malik - PLoS genetics, 2005 - journals.plos.org
Heterochromatin comprises a significant component of many eukaryotic genomes. In
comparison to euchromatin, heterochromatin is gene poor, transposon rich, and late …

Drosophila HP1c isoform interacts with the zinc-finger proteins WOC and Relative-of-WOC to regulate gene expression

J Font-Burgada, D Rossell, H Auer… - Genes & …, 2008 - genesdev.cshlp.org
Heterochromatin protein 1 (HP1) proteins are conserved in eukaryotes, with most species
containing several isoforms. Based on the properties of Drosophila HP1a, it was proposed …

[HTML][HTML] Unravelling HP1 functions: post-transcriptional regulation of stem cell fate

AM Casale, U Cappucci, L Piacentini - Chromosoma, 2021 - Springer
Abstract Heterochromatin protein 1 (HP1) is a non-histone chromosomal protein first
identified in Drosophila as a major component of constitutive heterochromatin, required for …

[HTML][HTML] Heterochromatin components in germline stem cell maintenance

Y Xing, WX Li - Scientific reports, 2015 - nature.com
Stem cell maintenance requires expression of genes essential for stemness and repression
of differentiation genes. How this is achieved remains incompletely understood. Here we …

Control of a Novel Spermatocyte-Promoting Factor by the Male Germline Sex Determination Factor PHF7 of Drosophila melanogaster

SY Yang, YC Chang, YH Wan, C Whitworth… - Genetics, 2017 - academic.oup.com
A key aspect of germ cell development is to establish germline sexual identity and initiate a
sex-specific developmental program to promote spermatogenesis or oogenesis. Previously …