Chromosomal locations of CRP3600 family members. The CRP3600 subgroup has 57 members , 32 of which are embedded in SAT5 repeat monomers arranged in a repeat array close to the centromere of chromosome 5; the AGI numbers of only the first and last copies of the array are shown (blue box). Additional file 3: Table S1 provides the full list of the AGI numbers in between these two genes. The four single dispersed copies of the SAT5 monomer containing different CRP genes or pseudogenes on chromosomes 2, 3, 4 and 5 are boxed in black. The pseudogenes on chromosome 2 (At2g19042) and chromosome 5 (At5g60978) were identified in the original MSAP analysis. The chromosome 4 gene (CRP4: At4g09545) has been analyzed in our study, which also considers two other genes in the CRP3600 subgroup that are not embedded in a SAT5 repeat (CRP5a: At5g42895 and CRP5b: At5g44495) (boxed in red). The single member of the CRP3600 subgroup containing introns (Atg53905) is indicated by the arrow. Additional information on CRP3600 subgroup members is given in Additional file 3: Figure S1. The figure was generated using the Chromosome Map Tool on the TAIR website http://www.arabidopsis.org/jsp/ChromosomeMap/tool.jsp.