Table 1.

Some studies that have assessed the approximate size of cencRNAs in different organisms under distinct conditions.

Organism	Originated From	Size	Observations	Technical Approach	References
Maize	CentC centromeric satellite repeats	40 nt and 75 nt predominantly ∼75 nt	Untreated cells	Northern blot	[68]
Maize	Centromeric retrotransposons (CRMs) and satellite repeats (CentC)	∼ 40 – 250 nt	Enriched in CenH3-associated chromatin	CenH3 immunoprecipi-tation followed by blot hybridization	[69]
Chicken-human hybrid DT40 cell	Alphoid (centromeric) and Satellite III (pericentromeric)	- Smear spanning from ∼ 20nt to > 10 kb	Dicer depletion	Northern blot	[48]
Tammar wallaby	sat23, a centromere-specific repetitive satellite containing the CENP-B-binding domain	∼ 40 nt	Untreated cells	Northern blot	[43]
Mouse	Minor satellite (centromere)	∼ 2-4 kb ∼ 120 nt trancript accumulation	- Untreated cells - Stress conditions, differentiation	Northern blot	[70]
Human (HeLa cells)	α-satellite (centromeric repeats)	Discrete bands corresponding to multiples of the 171 nt monomer.	Actynomicin-treated cells (unchanged abundance as compared to untreated control)	PCR	[71]
Human (HeLa cells)	α-satellite (centromeric repeats)	∼1.3 kb	Untreated cells	Northern blot	[15]
Human (HeLa cells)	α-satellite (centromeric repeats)	∼171 bp	Enriched in chromosome-associated RNA fraction	Purification of chromosome-associated RNA fraction followed by Northern blot	[72]