Wyniki wyszukiwania

1

New information on congenital dyserythropoietic anaemia, type I

100%

Wickramasinghe S. N.

Cellular and Molecular Biology Letters

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1998

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tom 03

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nr 2

2

C-banded karyotypes of some dragonfly species from Russia

100%

Perepelov E. A., Bugrov A. G., Warchalowska-Sliwa E.

Folia Biologica

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1998

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tom 46

|

nr 3-4

3

Rumex acetosa Y chromosomes: constitutive or facultative heterochromatin?

100%

Mosiolek M., Pasierbek P., Malarz J., Mos M., Joachimiak A. J.

Folia Histochemica et Cytobiologica

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2005

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tom 43

|

nr 3

4

Possible ancient origin of heterochromatic JNK sequences in chromosomes 2R of Secale vavilovii Grossh.

86%

Achrem M., Rogalska S. M., Kalinka A.

Journal of Applied Genetics

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2010

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tom 51

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nr 1

1-8

Employing FISH analysis as well as BLAST and CUSTAL W (1.82) programs, we investigated types of DNA nucleotide sequences building an additional heterochromatic band in 2R chromosomes of 3 lines of Secale vavilovii Grossh. The probes used in FISH analysis were designed based on the reverse transcriptase sequence of Ty 1-copia and Ту 3-gypsy retrotransposons and the 5S rRNA gene sequence. No hybridization signals from the reverse transcriptase probes were observed in the chromosome region where the additional band occurs. On the other hand, signals were observed after hybridization with the 5S rDNA probe, clearly suggesting the presence of that type of sequences in the analyzed heterochromatin band. Using BLAST and CUSTAL W programs, we revealed high similarity of the JNK1 sequence to the 5S rRNA gene from Hordeum chilense (HCH1016, HCH1018, 88%) and to a fragment of the 5S rRNA sequence of H. marinum (HMAR003, 97%). In addition, the same fragment of JNK1 was shown to be very similar to the part of the Angela retrotransposon (92%) as well as to the SNAC 426K20-1 transposon (89%) belonging to CACTA family, both from Triticum monococcum, and to Zingeria biebersteiniana pericentromeric sequences (78%). The similarity of JNK1 to those sequences may be accidental or the JNK1 may represent an ancient mobile genetic element that caught the 5S rRNA sequence. During the evolution those sequences might have been accumulated in the particular region on the 2R chromosome. Our results suggest that the additional heterochromatin band in chromosomes 2R of S. vavilovii is a collection of defective genes and/or mobile genetic elements.

5

Assessment of size of centromeric heterochromatin regions in Pulawska pigs

86%

Babicz M., Rejduch B., Kozubska-Sobocinska A., Danielak-Czech B., Walkiewicz A., Slota E.

Annals of Animal Science

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2004

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tom 04

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nr 1

6

Identification of early and late replicating heterochromatic regions on platyfish [Xiphophorus maculatus] chromosomes

86%

Ocalewicz K.

Folia Biologica

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2005

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tom 53

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nr 3-4

7

Chromosome study of Lithobius forficatus [Lithobiomorpha, Chilopoda]

86%

Woznicki P., Wytwer J., Kulesza M.

Folia Biologica

|

2003

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tom 51

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nr 3-4

8

The pScJNK1 repeated sequences identified on an extra heterochromatin band of chromosome 2R of Secale vavilovii Grossh lines

86%

Rogalska S. M., Achrem M., Strozycki P.

Biological Bulletin of Poznań

|

2001

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tom 38

|

nr 1

9

B chromosomes in two fish species, genus Rhamdia [Siluriformes, Pimelodidae]

86%

Fenocchio A. S., Bertolo L. A. C., Takahashi C. S., Camacho J. P. M.

Folia Biologica

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2000

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tom 48

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nr 3-4

10

Heterochromatin polymorphism in selected species of Hordeum L.

86%

Kobrzynski M., Romanowicz B.

Cellular and Molecular Biology Letters

|

2002

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tom 07

|

nr Suppl.

11

The C-banding technique for Coleoptera [Insecta]

86%

Rozek M.

Folia Biologica

|

2000

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tom 48

|

nr 1-2

12

Characterization of the constitutive heterochromatin of Astyanax sp. D [Characiformes: Characidae] from the Upper Iguacu River [PR]

72%

Kantek D. L. Z., Cestari M. M., Bertollo L. A. C., Moreira-Filho O.

Folia Biologica

|

2009

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tom 57

|

nr 1-2

37-41

13

Distribution and heterogeneity of heterochromatin in the European huchen (Hucho hucho Linnaeus, 1758) (Salmonidae)

72%

Kucinski M., Ocalewicz K., Fopp-Bayat D., Liszewski T., Furgala-Selezniow G., Jankun M.

Folia Biologica

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2014

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tom 62

|

nr 2

14

Aldolase A is present in smooth muscle cell nuclei

72%

Mamczur P., Dzugaj A.

Acta Biochimica Polonica

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2008

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tom 55

|

nr 4

799-805

Previously we have shown that aldolase (ALD; EC 4.1.2.13) is present in cardiomyocyte nuclei. Now, we focused our attention on ALD localization in smooth muscle cells. Immunocytochemical methods were used to study the subcellular localization of ALD. Aldolase was localized in the cytoplasm as well as in the nuclei. Within the nuclei ALD was located in the heterochromatin region. Native polyacrylamide gel electrophoresis followed by aldolase activity staining in gel was used to study the ALD isoenzyme pattern in porcine smooth muscle cells. Two ALD isoenzymes, A and C, were found in these cells but in the nuclei only the muscle isoenzyme was detected. To support the nuclear localization of ALD, measurement of aldolase activity in the smooth muscle cell nuclei isolated from porcine stomach was performed. The ALD activity in the isolated nuclei was detectable only after preincubation of the nuclear fraction with Triton X-100 and high concentration of KCl.

15

Characterization of heterochromatin in the salivary gland chromosomes of Chironomus riparius Meigen and Chironomus piger Strenzke (Diptera, Chironomidae) by differential and fluorochrome staining

72%

Michailova P., Ilkova J., Maryanska-Nadachowska A., Warchalowska-Sliwa E.

Folia Biologica

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2015

|

tom 63

|

nr 2

16

Giant sex chromosomes retained within the Portuguese lineage of the field vole (Microtus agrestis)

72%

Gimenez M. D., Pauperio J., Alves P. C., Searle J. B.

Acta Theriologica

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2012

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tom 57

|

nr 4

The field vole (Microtus agrestis) is characterised by extremely large blocks of heterochromatin on both the X and Y chromosome. Some other Microtus also have blocks of heterochromatin on their sex chromosomes but not as extensive and always of independent origin from the heterochromatic expansion found in M. agrestis. Coupled with evidence of geographic variation in large heterochromatic blocks within other species (e.g. in the western hedgehog Erinaceus europaeus), it might be expected that field voles would show substantial variation in size and disposition of the sex chromosome heterochromatin. In fact, only minor variation has been described up to now. Those studies conducted previously were largely on field voles from central and northern Europe. Here, we describe the karyotype of field voles from Portugal, of interest because recent molecular studies have shown field voles from western Iberia to be a separate evolutionary unit that might be considered a cryptic species, distinct from populations further to the east. The two Portuguese field voles (one female, one male) that we examined also had essentially the same karyotype as seen in other field voles, including the giant sex chromosomes, but with small differences in the structure of the Y chromosome from that described previously. The finding that field voles throughout Europe show relatively little variation in their giant sex chromosomes is consistent with molecular data which suggest a recent origin for this complex of species/near-species.

17

Description of the Muscovy duck [Cairina moschata] karyotype

72%

Wojcik E., Smalec E.

Folia Biologica

|

2008

|

tom 56

|

nr 3-4

243-248

18

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Dedifferentiation of Arabidopsis thaliana cells is accompanied by large decrease of RNA polymerase II transcription

72%

Delenko K., Niedojadlo J., Labedzka A., Bednarska-Kozakiewicz E.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

|

tom 94

|

nr 3

19

Heterochromatin diversity in two parental species of the tetraploid liverwort Pellia borealis Lorb.

72%

Chudzinska E.

Prace Naukowe Uniwersytetu Śląskiego w Katowicach

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1998

|

tom 1696

20

Karyological studies on Aconitum lasiocarpum [Rchb.] Gayer [Ranunculaceae]

72%

Joachimiak A., Ilnicki T., Mitka J.

Acta Biologica Cracoviensia. Series Botanica

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1999

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tom 41

The karyotype structure of Aconitum lasiocarpum (Rchb.) Gáyer was investigated conventionally and by Giemsa C-banding. The chromosome complex of A. lasiocarpum is composed of two distinguishable pairs of long chromosomes and six pairs of considerably shorter chromosomes. Nucleolar organizers are localized on the shorter arms of three (1, 3 and 5) chromosomes. In all analyzed plants the first and third NOR-chromosome pairs show structural heterozygosity concerning the presence of small satellites. The C-banded karyotype of A. lasiocarpum is heterochromatin-poor; all fixed heterochromatin segments occupy 7.51% of karyotype length. Four satellited chromosomes have larger, terminally located heterochromatic segments on their shorter arms. The authors made preliminary karyological observations of two other Aconitum species, the closely related A. degenii and A. variegatum, and discussed the relationships between the three species.

Ograniczanie wyników

New information on congenital dyserythropoietic anaemia, type I

C-banded karyotypes of some dragonfly species from Russia

Rumex acetosa Y chromosomes: constitutive or facultative heterochromatin?

Possible ancient origin of heterochromatic JNK sequences in chromosomes 2R of Secale vavilovii Grossh.

Assessment of size of centromeric heterochromatin regions in Pulawska pigs

Identification of early and late replicating heterochromatic regions on platyfish [Xiphophorus maculatus] chromosomes