Nuclear lamina association profiles across genic regions. (A) The entire set of 29235 genes was assigned to two groups: sLAD genes and non-sLAD genes. Among them, 19269 genes with expression data  were further assigned to four subgroups: expressed sLAD genes, silent sLAD genes, expressed non-sLAD genes and silent non-sLAD genes. Log2 seq ratios of genes in the same group were aligned using the 2 kb windows containing TSSs and TESs respectively, and the average log2 seq ratios of the six 2 kb windows upstream, the window containing TSSs/TESs and the six 2 kb windows downstream were plotted. (B) A genome browser view of the Sp4 gene expressed in C2C12 myoblasts and its NL association status.