PERIODICITY OF TRIPLET DISTRIBUTION IN GOLDEN-HAMSTER SYNAPTONEMAL COMPLEX DNA

Frequencies of tripler repeats with periodicities of 2, 3,..., 11 bp i n the family of DNA sequences in the golden hamster synaptonemal compl ex (SC) were analyzed in comparison with some structurally and functio nally related families of genomic DNA. Triplets TGT/ACA and GTG/CAC wi th a 2-nt period were found to be the most frequent in rat and hamster SC DNA as well as in the microsatellite loci of human chromosome 13. The tripler distribution patterns were different for cloned nuclear ma trix-associated DNA of hen alpha-globin gene domain and for a sample o f random sequences.