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Updated: Mar 29, 2026

In Vitro Characterization of Histone Chaperones using Analytical, Pull-Down and Chaperoning Assays
Published on: December 29, 2021
TSPY-like 2, Beyond the Histone Chaperone Role
Emanuele Bonenti1,2, Miriana Cardano1, Giacomo Buscemi1
1Istituto di Genetica Molecolare Luigi Luca Cavalli-Sforza, Consiglio Nazionale delle Ricerche (IGM-CNR), 27100 Pavia, Italy.
Testis specific protein Y-like 2 (TSPYL2) is a histone chaperone involved in chromatin assembly and other cellular processes. TSPYL2 dysfunction is linked to diseases like cancer and neurodevelopmental abnormalities.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Chromatin, composed of DNA and histones, is dynamically regulated by histone chaperones.
- The nucleosome assembly protein (NAP) superfamily is a key group of histone chaperones.
- Testis specific protein Y-like 2 (TSPYL2) is a notable member of the NAP superfamily.
Purpose of the Study:
- To review and discuss the diverse cellular functions of TSPYL2.
- To highlight TSPYL2's roles beyond chromatin organization, including transcription and cell-cycle regulation.
- To explore emerging aspects of TSPYL2, such as its sex-related activity and disease associations.
Main Methods:
- Literature review and synthesis of existing research on TSPYL2.
- Analysis of TSPYL2's interactions with histones and its regulatory roles.
- Examination of the link between TSPYL2 defects and various diseases.
Main Results:
- TSPYL2 binds histones and influences chromatin assembly.
- TSPYL2 regulates transcription, cell-cycle progression, and DNA-damage response.
- Defects in TSPYL2 are associated with cancer and neurodevelopmental disorders.
Conclusions:
- TSPYL2 possesses multifaceted cellular functions beyond its canonical role as a histone chaperone.
- Emerging evidence suggests TSPYL2 has sex-related activities.
- Understanding TSPYL2's functions is crucial for comprehending its role in disease pathogenesis.
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