Figure 1

Examples of tandem repeats in assorted ORFs. Cartoons show representative patterns of tandemly arrayed HMM domains (red boxes) within ORFs (rods). Domains of unique sequence (unmarked) or shared identical sequence (similarly-numbered) are indicated. Asterisks (*) denote non-canonical domains with fewer or more than 25 residues. (A) The most prevalent pattern comprises uninterrupted tracts of tandem repeats, with each unit having a unique sequence, as represented by two expressed mycoplasmal LPs (LppC and LppQ). (B) Less common patterns include tracts comprising repeated blocks of domains (indicated by brackets), occasionally separated by spacer regions of unrelated sequence (rods between blocks). Depictions are not to scale and do not show the precise location of tracts in an ORF. ORFs representing the respective taxa listed include: Mmm SC PG1 (LppC), gi|42561519|ref|NP_975970.1|; Mmm SC PG1 (LppQ), gi|42561534|ref|NP_975985.1|; Mcc Kid (MCAP_0309), gi|83319306|ref|YP_424295.1|; Mesoplasma florum L1, gi|50365263|ref|YP_053688.1|; Ostreococcus lucimarinus CCE9901, gi|145356136|ref|XP_001422294.1|; Helicobacter hepaticus ATCC 51449, gi|32265549|ref|NP_859581.1|; Psychroflexus torquis ATCC 700755, gi|91218343|ref|ZP_01255287.1|; Micromonas sp. RCC299, gi|226517946|gb|ACO63939.1|; Flavobacteria bacterium BAL38, gi|126663436|ref|ZP_01734433.1|