Analysis of chromosomal homologies between two species of the subgenus sophophora: D. miranda and D. melanogaster using cloned DNA segments

Chromosoma ◽  
1982 ◽  
Vol 87 (1) ◽  
pp. 77-88 ◽  
Author(s):  
M. Steinemann
Keyword(s):  
Chromosomal Homologies

Chromosomal homologies of the genera Vespertilio, Plecotus and Barbastella (Chiroptera: Vespertilionidae)

Genetica ◽  
1985 ◽  
Vol 66 (3) ◽  
pp. 231-236 ◽  
Author(s):  
M. Volleth
Keyword(s):  
Chromosomal Homologies

The actin loci in the genus Drosophila: establishment of chromosomal homologies among distantly related species by in situ hybridization

Chromosoma ◽  
1986 ◽  
Vol 94 (4) ◽  
pp. 297-308 ◽  
Author(s):  
Michael Loukas ◽  
Fotis C. Kafatos
Keyword(s):  
In Situ Hybridization ◽  
Related Species ◽  
Chromosomal Homologies

A comparative map of the porcine and human genomes demonstrates ZOO-FISH and gene mapping-based chromosomal homologies

1996 ◽  
Vol 7 (4) ◽  
pp. 285-290 ◽  
Author(s):  
L. Frönicke ◽  
B. P. Chowdhary ◽  
H. Scherthan ◽  
I. Gustavsson
Keyword(s):  
Gene Mapping ◽  
Comparative Map ◽  
Human Genomes ◽  
Chromosomal Homologies

Chromosomal homologies betweenDrosophila lebanonensis andD. melanogaster determined by in situ hybridization

Chromosoma ◽  
1993 ◽  
Vol 102 (5) ◽  
pp. 361-368 ◽  
Author(s):  
M. Papaceit ◽  
E. Juan
Keyword(s):  
In Situ Hybridization ◽  
Chromosomal Homologies

Chromosomal homologies betweenCebusandAteles(Primates) based on ZOO-FISH and G-banding comparisons

2002 ◽  
Vol 57 (4) ◽  
pp. 177-188 ◽  
Author(s):  
F. García ◽  
A. Ruiz-Herrera ◽  
J. Egozcue ◽  
M. Ponsà ◽  
M. Garcia
Keyword(s):  
Chromosomal Homologies

In situlocalization of the evolutionary conserved Cpy/Cty gene in the subfamily Chironominae (Chironomidae, Diptera): establishment of chromosomal homologies

2009 ◽  
Vol 47 (3) ◽  
pp. 298-301 ◽  
Author(s):  
P. Michailova ◽  
B. Krastanov ◽  
T. Hankeln ◽  
E. Schmidt ◽  
C. Kraemer
Keyword(s):  
Chromosomal Homologies

Chromosomal homologies between humans and Cebus apella (Primates) revealed by ZOO-FISH

2000 ◽  
Vol 11 (5) ◽  
pp. 399-401 ◽  
Author(s):  
F. García ◽  
C. Nogués ◽  
M. Ponsà ◽  
A. Ruiz-Herrera ◽  
J. Egozcue ◽  
...  
Keyword(s):  
Cebus Apella ◽  
Chromosomal Homologies

Comparative analysis of the cattle and human genomes: detection of ZOO-FISH and gene mapping-based chromosomal homologies

1996 ◽  
Vol 7 (4) ◽  
pp. 297-302 ◽  
Author(s):  
B. P. Chowdhary ◽  
L. Frönicke ◽  
I. Gustavsson ◽  
H. Scherthan
Keyword(s):  
Comparative Analysis ◽  
Gene Mapping ◽  
Human Genomes ◽  
Chromosomal Homologies

scholarly journals Cohesin regulates homology search during recombinational DNA repair

2020 ◽  
Author(s):  
Aurèle Piazza ◽  
Hélène Bordelet ◽  
Agnès Dumont ◽  
Agnès Thierry ◽  
Jérôme Savocco ◽  
...  
Keyword(s):  
Strand Break ◽  
Collision Probability ◽  
Homology Search ◽  
Dependent Manner ◽  
Loop Expansion ◽  
Genome Wide ◽  
Dna Double Strand Break ◽  
Chromatid Cohesion ◽  
Flanking Regions ◽  
Chromosomal Homologies

SummaryHomologous recombination (HR) is a ubiquitous DNA double-strand break (DSB) repair mechanism that promotes cell survival. It entails a potentially genome-wide homology search step, carried out along a conserved RecA/Rad51-ssDNA nucleoprotein filament (NPF) assembled on each DSB ends1–3. This search is subdued to NPF-dsDNA collision probability, dictated in part by chromatin conformation2,4. In contrast to the extensive knowledge about chromatin composition and mobility changes elicited by the DNA damage checkpoint (DDC)5–7, whether, how, and to which extent a DSB impacts spatial chromatin organization, and whether this organization in turns influences the homology search process, remains ill-defined8,9. Here we characterize two layers of spatial chromatin reorganization following DSB formation inS. cerevisiae.While cohesin folds chromosomes into cohesive arrays of 10-20 kb long chromatin loops as cells arrest in G2/M10,11, the DSB-flanking regions locally interact in a resection- and 9-1-1 clamp-dependent manner, independently of cohesin and HR proteins. This local structure blocks cohesin progression, constraining the extending NPF at loop base. Functionally this organization promotes side-specificcisDSB-dsDNA interactions that scales with loop expansion span, and provides a kinetic advantage for identification of intra- over inter-chromosomal homologies. We propose that cohesins regulate homology search by promotingcisdsDNA over-sampling, both upon loop expansion-coupled unidimensional dsDNA scanning, NPF trapping, and chromosome individualization, largely independent of their role in sister chromatid cohesion.

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