Reiterated genes with varying location in intercalary heterochromatin regions of Drosophila melanogaster polytene chromosomes

Chromosoma ◽  
1978 ◽  
Vol 70 (1) ◽  
pp. 1-17 ◽  
Author(s):  
E. V. Ananiev ◽  
V. A. Gvozdev ◽  
Yu. V. Ilyin ◽  
N. A. Tchurikov ◽  
G. P. Georgiev
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Intercalary Heterochromatin

Influence of the SuUR gene on intercalary heterochromatin in Drosophila melanogaster polytene chromosomes

Chromosoma ◽  
2003 ◽  
Vol 111 (6) ◽  
pp. 377-398 ◽  
Author(s):  
I. Zhimulev ◽  
E. Belyaeva ◽  
I. Makunin ◽  
V. Pirrotta ◽  
E. Volkova ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Intercalary Heterochromatin ◽  
Suur Gene

Intercalary heterochromatin in polytene chromosomes of Drosophila melanogaster

Chromosoma ◽  
2008 ◽  
Vol 117 (5) ◽  
pp. 411-418 ◽  
Author(s):  
E. S. Belyaeva ◽  
E. N. Andreyeva ◽  
S. N. Belyakin ◽  
E. I. Volkova ◽  
I. F. Zhimulev
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Intercalary Heterochromatin

Localization and characteristics of DNA underreplication zone in the 75C region of intercalary heterochromatin in Drosophila melanogaster polytene chromosomes

Chromosoma ◽  
2009 ◽  
Vol 118 (6) ◽  
pp. 747-761 ◽  
Author(s):  
Natalya G. Andreyenkova ◽  
Elena B. Kokoza ◽  
Valery F. Semeshin ◽  
Elena S. Belyaeva ◽  
Sergey A. Demakov ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Intercalary Heterochromatin

Border Structure of Intercalary Heterochromatin Bands of Drosophila melanogaster Polytene Chromosomes

2018 ◽  
Vol 479 (1) ◽  
pp. 114-117 ◽  
Author(s):  
V. A. Khoroshko ◽  
T. Yu. Zykova ◽  
O. O. Popova ◽  
I. F. Zhimulev
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Intercalary Heterochromatin

DNA underreplication in intercalary heterochromatin regions in polytene chromosomes of Drosophila melanogaster correlates with the formation of partial chromosomal aberrations and ectopic pairing

Chromosoma ◽  
2006 ◽  
Vol 115 (5) ◽  
pp. 355-366 ◽  
Author(s):  
Elena S. Belyaeva ◽  
Sergey A. Demakov ◽  
Galina V. Pokholkova ◽  
Artyom A. Alekseyenko ◽  
Tatiana D. Kolesnikova ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Chromosomal Aberrations ◽  
Polytene Chromosomes ◽  
Intercalary Heterochromatin ◽  
Ectopic Pairing

scholarly journals Chromosomal Distribution of Transposable Elements in Drosophila melanogaster Test of the Ectopic Recombination Model for Maintenance of Insertion Site Number

Genetics ◽  
1996 ◽  
Vol 144 (1) ◽  
pp. 197-204
Author(s):  
Christine Hoogland ◽  
Christian Biémont
Keyword(s):  
Drosophila Melanogaster ◽  
Transposable Elements ◽  
Dna Content ◽  
Recombination Rate ◽  
Alternative Hypothesis ◽  
Insertion Site ◽  
Polytene Chromosomes ◽  
Negative Relationship ◽  
Site Occupancy ◽  
Site Number

Abstract Data of insertion site localization and site occupancy frequency of P, hobo, I, copia, mdg1, mdg3, 412, 297, and roo transposable elements (TEs) on the polytene chromosomes of Drosophila melanogaster were extracted from the literature. We show that TE insertion site number per chromosomal division was significantly correlated with the amount of DNA. The insertion site number weighted by DNA content was not correlated with recombination rate for all TEs except hobo, for which a positive correlation was detected. No global tendency emerged in the relationship between TE site occupancy frequency, weighted by DNA content, and recombination rate; a strong negative correlation was, however, found for the 3L arm. A possible dominant deleterious effect of chromosomal rearrangements due to recombination between TE insertions is thus not the main factor explaining the dynamics of TEs, since this hypothesis implies a negative relationship between recombination rate and both TE insertion site number and site occupancy frequency. The alternative hypothesis of selection against deleterious effects of insertional mutations is discussed.

Microdissection and cloning of DNA from a specific region of Drosophila melanogaster polytene chromosomes

Chromosoma ◽  
1981 ◽  
Vol 82 (2) ◽  
pp. 205-216 ◽  
Author(s):  
F. Scalenghe ◽  
E. Turco ◽  
J. E. Edström ◽  
V. Pirrotta ◽  
M. Melli
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Specific Region

A cDNA from Drosophila melanogaster encodes a lamin C-like intermediate filament protein

1993 ◽  
Vol 104 (4) ◽  
pp. 1263-1272 ◽  
Author(s):  
C.A. Bossie ◽  
M.M. Sanders
Keyword(s):  
Drosophila Melanogaster ◽  
Intermediate Filament ◽  
Blot Analysis ◽  
Polytene Chromosomes ◽  
Intermediate Filament Protein ◽  
Chromosome 2 ◽  
Cross Hybridization ◽  
Intermediate Filament Proteins ◽  
Nuclear Lamins ◽  
Filament Protein

A novel intermediate filament cDNA, pG-IF, has been isolated from a Drosophila melanogaster embryonic expression library screened with a polyclonal antiserum produced against a 46 kDa cytoskeletal protein isolated from Kc cells. This 46 kDa protein is known to be immunologically related to vertebrate intermediate filament proteins. The screen resulted in the isolation of four different cDNA groups. Of these, one has been identified as the previously characterized Drosophila nuclear lamin cDNA, Dm0, and a second, pG-IF, demonstrates homology to Dm0 by cross hybridization on Southern blots. DNA sequence analysis reveals that pG-IF encodes a newly identified intermediate filament protein in Drosophila. Its nucleotide sequence is highly homologous to nuclear lamins with lower homology to cytoplasmic intermediate filament proteins. pG-IF predicts a protein of 621 amino acids with a predicted molecular mass of 69,855 daltons. In vitro transcription and translation of pG-IF yielded a protein with a SDS-PAGE estimated molecular weight of approximately 70 kDa. It contains sequence principles characteristic of class V intermediate filament proteins. Its near neutral pI (6.83) and the lack of a terminal CaaX motif suggests that it may represent a lamin C subtype in Drosophila. In situ hybridization to polytene chromosomes detects one band of hybridization on the right arm of chromosome 2 at or near 51A. This in conjunction with Southern blot analysis of various genomic digests suggests one or more closely placed genes while Northern blot analysis detects two messages in Kc cells.

scholarly journals Association of a protease with polytene chromosomes of Drosophila melanogaster.

1980 ◽  
Vol 87 (2) ◽  
pp. 415-419 ◽  
Author(s):  
J Cavagnaro ◽  
D A Pierce ◽  
J C Lucchesi ◽  
C B Chae
Keyword(s):  
Acetic Acid ◽  
Drosophila Melanogaster ◽  
Heat Shock ◽  
Protease Inhibitors ◽  
Polytene Chromosomes ◽  
Fixation Procedure ◽  
Apparent Effect ◽  
Chloromethyl Ketone ◽  
Diisopropyl Fluorophosphate ◽  
Uniform Labeling

Incubation of Drosophila salivary glands with radioactive diisopropyl fluorophosphate results in the uniform labeling of polytene chromosomes. Extensive labeling is seen only when chromosome squashes are prepared by a formaldehyde fixation procedure and not by standard acetic acid techniques. The labeling is inhibited in the presence of tosylphenylalanine chloromethyl ketone and phenylmethane sulfonylfluoride but not by tosyllysine chloromethyl ketone, suggesting that a chymotrypsin-like serine protease is associated with the chromosomes. Protease inhibitors show no apparent effect on heat-shock specific puffing.

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