Bipartite structure of the inactive mouse X chromosome

Table 1 Frequency of contacts within superdomains and between superdomains

Library	Chromosome	Frequency of intra-superdomain 1 contacts^a	Frequency of intra-superdomain 2 contacts^a	Frequency of inter-superdomain contacts^a	Bipartite index^b	P value^c
Combined-brain	Xa	46.72	55.22	13.80	3.69	0.534
Combined-brain	Xi	32.10	33.42	7.81	4.19	1.25E-03
Combined-Patski	Xa	5.26	6.15	2.32	2.46	0.832
Combined-Patski	Xi	12.03	12.97	3.76	3.32	5.67E-03

^aThe frequency of contacts is calculated as the average number of contacts between two 1 Mb-size windows
^bThe bipartite index represents the ratio between the frequency of intra-superdomain contacts to inter-superdomain contacts
^cThe p value is calculated by one-sided Z-test to measure the significance of the observed superdomain boundary compared with randomly shifted boundaries

ISSN: 1474-760X