PMID- 22117409 OWN - NLM STAT- MEDLINE DCOM- 20111214 LR - 20111128 IS - 0016-6758 (Print) IS - 0016-6758 (Linking) VI - 47 IP - 9 DP - 2011 Sep TI - [Comparative FISH analysis of C-positive regions of chromosomes of wood mice (Rodentia, Muridae, Sylvaemus)]. PG - 1236-46 AB - The homology of DNA of C-positive centromeric regions of chromosomes in wood mice of the genus Sylvaemus (S. uralensis, S. fulvipectus, S. sylvaticus, S. flavicollis, and S. ponticus) was estimated for the first time. DNA probes were generated by microdissection from the centromeric regions of individual autosomes of each species, and their fluorescence in situ hybridization (FISH) with metaphase chromosomes of representatives of all studied wood mouse species was carried out. Unlike in the chromosomal forms and races of S. uralensis, changes in the DNA composition of the chromosomal centromeric regions in the wood mouse species of the genus Sylvaemus (including closely related S. flavicollis and S. ponticus) are both quantitative and qualitative. The patterns of FISH signals after in situ hybridization of the microdissection DNA probes with chromosomes of the species involved in the study demonstrate significant differences between C-positive regions of wood mouse chromosomes in the copy number and the level of homology of repetitive sequences as well as in the localization of homologous repetitive sequences. It was shown that C-positive regions of wood mouse chromosomes can contain both homologous and distinct sets of repetitive sequences. Regions enriched with homologous repeats were detected either directly in C-positive regions of individual chromosomes or only on the short arms of acrocentrics, or at the boundary of C-positive and C-negative regions. FAU - Rubtsov, N B AU - Rubtsov NB FAU - Karamysheva, T V AU - Karamysheva TV FAU - Bogdanov, A S AU - Bogdanov AS FAU - Likhoshvai, T V AU - Likhoshvai TV FAU - Kartavtseva, I V AU - Kartavtseva IV LA - rus PT - Comparative Study PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Russia (Federation) TA - Genetika JT - Genetika JID - 0047354 SB - IM MH - Animals MH - Centromere/*genetics MH - *Chromosome Painting MH - Chromosomes, Mammalian/*genetics MH - Muridae/*genetics MH - Species Specificity EDAT- 2011/11/29 06:00 MHDA- 2011/12/15 06:00 CRDT- 2011/11/29 06:00 PHST- 2011/11/29 06:00 [entrez] PHST- 2011/11/29 06:00 [pubmed] PHST- 2011/12/15 06:00 [medline] PST - ppublish SO - Genetika. 2011 Sep;47(9):1236-46.