(H ) Putative motif at axis sites.
Most axis sites detected by ChIP-seq were broad, ranging from 1 to 3 kb.
Indeed, the numbers of axis sites on individual chromosomes were highly correlated with the number of Spo11 cleavage events (Spo11-linked oligonucleotide counts; Figure 1 figure supplement 1D).
One of the first functions of Red1 and Hop1 is to correctly localize the essential DSB factors Mer2, Rec114 and Mei4 to axis sites (Panizza et al., 2011).
From the map, it can be observed that the receivers that are collinear on a northwest-southeast axis (sites 13 and 15; sites 1, 3, and 11) have almost identical time series.
Red1 has a well-known ability to oligomerize (Woltering et al., 2000), which may support the congression of axis sites, although other proteins, including Hop1, may contribute to the wild-type structure.
According to the Tree-axis site, approximately 8,000 Pretendsters coexist with real people on Friendster.
Another open question is whether all sites of cohesin binding (with the exception of centromeres) function as axis attachment sites on a given chromosome, and thus whether spacing of axis attachment sites can serve as a proxy for estimating loop sizes.
Thus, in wild-type cells, Red1 and Hop1 form axis attachment sites by recognizing a feature of cohesin-associated sites, but a cohesin-independent mechanism may contribute additional binding specificity.
Statistical analysis (Zhang et al., 2008) derived a total of 774 Red1 binding sites, in close agreement with previous reports, which identified 656 and 802 axis association sites, respectively (Panizza et al., 2011; Blitzblau et al., 2012).
However, foliar P is relatively uncorrelated with the first LES axis at sites where soil P strongly influences distribution of vegetation, and instead correlates with a "leaf edaphic habitat spectrum" axis that is quite strong in a tropical tree community characterized by high habitat differentiation among species.
