Volume 40 Part 2 (2012) 347–350

An incorrect definition of ChIP was introduced by the publisher in this article on p. 347. It should be defined as chromatin immunoprecipitation. The sentence should read:

ISW1a is a member of the ISWI family of ATP-dependent chromatin remodelling factors, and is found as demonstrated by ChIP (chromatin immunoprecipitation)-seq mapping experiments in the vicinity of the −1 and +1 nucleosomes of many TSSs [10,11].