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Статті в журналах з теми "P-elements"

Автор: Grafiati

Опубліковано: 10 березня 2023

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1

Lansman, R. A., R. O. Shade, T. A. Grigliatti, and H. W. Brock. "Evolution of P transposable elements: sequences of Drosophila nebulosa P elements." Proceedings of the National Academy of Sciences 84, no. 18 (1987): 6491–95. http://dx.doi.org/10.1073/pnas.84.18.6491.

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2

Gloor, G. B., C. R. Preston, D. M. Johnson-Schlitz, et al. "Type I repressors of P element mobility." Genetics 135, no. 1 (1993): 81–95. http://dx.doi.org/10.1093/genetics/135.1.81.

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Анотація:

Abstract We describe here a family of P elements that we refer to as type I repressors. These elements are identified by their repressor functions and their lack of any deletion within the first two-thirds of the canonical P sequence. Elements belonging to this repressor class were isolated from P strains and were made in vitro. We found that type I repressor elements could strongly repress both a cytotype-dependent allele and P element mobility in somatic and germline tissues. These effects were very dependent on genomic position. Moreover, we observed that an element's ability to repress in

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3

Abdollahi, Alireza, and S. Mohsen Ghoraishi. "p-groups for which each outer p-automorphism centralizes only p elements." Glasnik Matematicki 49, no. 1 (2014): 119–22. http://dx.doi.org/10.3336/gm.49.1.10.

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4

Alarcon, E., and A. Reverter. "p-adaptive boundary elements." International Journal for Numerical Methods in Engineering 23, no. 5 (1986): 801–29. http://dx.doi.org/10.1002/nme.1620230505.

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5

Loreto, Elgion L. S., Francis M. B. Zambra, Mauro F. Ortiz, and Lizandra J. Robe. "New Drosophila P-like elements and reclassification of Drosophila P-elements subfamilies." Molecular Genetics and Genomics 287, no. 7 (2012): 531–40. http://dx.doi.org/10.1007/s00438-012-0691-y.

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6

O'Hare, Kevin, Alan Driver, Stephen McGrath та Dena M. Johnson-Schiltz. "Distribution and structure of cloned P elements from the Drosophila melanogaster P strain π2". Genetical Research 60, № 1 (1992): 33–41. http://dx.doi.org/10.1017/s0016672300030640.

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SummaryP transposable elements of Drosophila melanogaster cloned from the strong P strain π2 have been analysed. The structures and chromosomal locations of 26 of the 30–50 elements estimated to be present in π2 have been determined. At one location two elements are inserted 100 base pairs (bp) apart, and in a second location two elements are only separated by the 8 bp duplicated upon P-element insertion. In addition to 2.9 kilobasepair (kbp) elements, elements with 14 different internal deletions from 1.3 to 2.3 kbp in size have been isolated. There are 7 copies of the 2–9 kbp element, 2 copi

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7

JACKSON, IAN J. "Do mammals need P elements?" Nature 321, no. 6071 (1986): 656–57. http://dx.doi.org/10.1038/321656a0.

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8

Kamacı, Hüseyin, and Akın Osman Atagün. "NEAR-RINGS WITH P-CENTRAL P-NILPOTENT OR P IDEMPOTENT ELEMENTS." JP Journal of Algebra, Number Theory and Applications 40, no. 5 (2018): 903–12. http://dx.doi.org/10.17654/nt040050903.

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9

Héthelyi, L., and L. Lévai. "On elements of order p in powerful p-groups." Journal of Algebra 270, no. 1 (2003): 1–6. http://dx.doi.org/10.1016/s0021-8693(03)00503-9.

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10

Wilson, Lawrence E. "Torsion elements in p-adic analytic pro-p groups." Journal of Algebra 277, no. 2 (2004): 806–24. http://dx.doi.org/10.1016/s0021-8693(03)00534-9.

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11

Tong-Viet, Hung P. "Conjugacy classes of p-elements and normal p-complements." Pacific Journal of Mathematics 308, no. 1 (2020): 207–22. http://dx.doi.org/10.2140/pjm.2020.308.207.

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12

Ginsburg, John. "On the Number of Maximal Elements in a Partially Ordered Set." Canadian Mathematical Bulletin 30, no. 3 (1987): 351–57. http://dx.doi.org/10.4153/cmb-1987-050-6.

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Анотація:

AbstractLet P be a partially ordered set. For an element x ∊ P, a subset C of P is called a cutset for x in P if every element of C is noncomparable to x and every maximal chain in P meets {x} ∪ C. The following result is established: if every element of P has a cutset having n or fewer elements, then P has at most 2n maximal elements. It follows that, if some element of P covers k elements of P then there is an element x ∊ P such that every cutset for x in P has at least log2k elements.

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13

Priegert, Andrew M., Benjamin W. Rawe, Spencer C. Serin, and Derek P. Gates. "Polymers and the p-block elements." Chemical Society Reviews 45, no. 4 (2016): 922–53. http://dx.doi.org/10.1039/c5cs00725a.

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14

Vyakaranam, Kamesh, John A. Maguire, and Narayan S. Hosmane. "Heteroboranes of the p-block elements." Journal of Organometallic Chemistry 646, no. 1-2 (2002): 21–38. http://dx.doi.org/10.1016/s0022-328x(01)01214-1.

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15

Isaacs, I. M., and Gabriel Navarro. "Normal p-complements and fixed elements." Archiv der Mathematik 95, no. 3 (2010): 207–11. http://dx.doi.org/10.1007/s00013-010-0162-9.

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16

ZAHARESCU, ALEXANDRU. "LIPSCHITZIAN ELEMENTS OVER p-ADIC FIELDS." Glasgow Mathematical Journal 47, no. 2 (2005): 363–72. http://dx.doi.org/10.1017/s0017089505002594.

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17

Robertson, H. M., and W. R. Engels. "Modified P elements that mimic the P cytotype in Drosophila melanogaster." Genetics 123, no. 4 (1989): 815–24. http://dx.doi.org/10.1093/genetics/123.4.815.

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Анотація:

Abstract Activity of the P family of transposable elements in Drosophila melanogaster is regulated primarily by a cellular condition known as P cytotype. It has been hypothesized that P cytotype depends on a P element-encoded repressor of transposition and excision. We provide evidence in support of this idea by showing that two modified P elements, each with lesions affecting the fourth transposase exon, mimic most of the P cytotype effects. These elements were identified by means of two sensitive assays capable of detecting repression by a single P element. One assay makes use of cytotype-de

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18

Ronsseray, Stéphane, Laurent Marin, Monique Lehmann, and Dominique Anxolabéhère. "Repression of Hybrid Dysgenesis in Drosophila melanogaster by Combinations of Telomeric P-Element Reporters and Naturally Occurring P Elements." Genetics 149, no. 4 (1998): 1857–66. http://dx.doi.org/10.1093/genetics/149.4.1857.

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Abstract In Drosophila melanogaster, hybrid dysgenesis occurs in the germline of flies produced by crosses between females lacking P elements and males carrying 25–55 P elements. We have previously shown that a complete maternally inherited repression of P transposition in the germline (P cytotype) can be elicited by only two autonomous P elements located at the X chromosome telomere (cytological site 1A). We have tested whether P transgenes at 1A, unable to code for a P-repressor, may contribute to the repression of P elements. Females carrying a P-lacZ transgene at 1A [“P-lacZ(1A)”], crossed

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19

Pomerantseva, Ekaterina, Inna Biryukova, Rita Silicheva, Ekaterina Savitskaya, Anton Golovnin, and Pavel Georgiev. "Transposition of Regulatory Elements by P-Element-Mediated Rearrangements in Drosophila melanogaster." Genetics 172, no. 4 (2005): 2283–91. http://dx.doi.org/10.1534/genetics.105.052803.

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20

Rasmusson, K. E., J. D. Raymond, and M. J. Simmons. "Repression of hybrid dysgenesis in Drosophila melanogaster by individual naturally occurring P elements." Genetics 133, no. 3 (1993): 605–22. http://dx.doi.org/10.1093/genetics/133.3.605.

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Abstract Individual P elements that were genetically isolated from wild-type strains were tested for their abilities to repress two aspects of hybrid dysgenesis: gonadal dysgenesis and mutability of a double-P element-insertion allele of the singed locus (snw). These elements were also characterized by Southern blotting, polymerase chain reaction amplification and DNA sequencing. Three of the elements were 1.1-kb KP elements, one was a 1.2-kb element called D50, and one was a 0.5-kb element called SP. These three types of elements could encode polypeptides of 207, 204, and 14 amino acids, resp

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21

Stuart, Jeremy R., Kevin J. Haley, Douglas Swedzinski, et al. "Telomeric P elements Associated With Cytotype Regulation of the P Transposon Family in Drosophila melanogaster." Genetics 162, no. 4 (2002): 1641–54. http://dx.doi.org/10.1093/genetics/162.4.1641.

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Abstract P elements inserted at the left end of the Drosophila X chromosome were isolated genetically from wild-type P strains. Stocks carrying these elements were tested for repression of P-strain-induced gonadal dysgenesis in females and for repression of transposase-catalyzed P-element excision in males and females. Both traits were repressed by stocks carrying either complete or incomplete P elements inserted near the telomere of the X chromosome in cytological region 1A, but not by stocks carrying only nontelomeric X-linked P elements. All three of the telomeric P elements that were analy

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22

Izod, Keith. "Complexes of P-stabilised carbanions with s- and p-elements." Coordination Chemistry Reviews 227, no. 2 (2002): 153–73. http://dx.doi.org/10.1016/s0010-8545(02)00011-5.

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23

Hagemann, S., E. Haring, and W. Pinsker. "A new P element subfamily from Drosophila tristis, D. ambigua, and D. obscura." Genome 39, no. 5 (1996): 978–85. http://dx.doi.org/10.1139/g96-122.

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A new P element subfamily, designated T-type, was found in the genomes of the three closely related species Drosophila ambigua, Drosophila obscura, and Drosophila tristis. The subfamily comprises both full-sized and internally deleted P elements. The T-type element of D. ambigua is longer than the canonical P elements owing to a 300-bp insertion in the 3′ noncoding region. Tandemly arranged T-type elements were detected in D. ambigua and D. tristis. The overall structure of T-type elements resembles that of the Drosophila melanogaster P element and the termini are formed by perfect inverted re

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24

SIMMONS, MICHAEL J., LISA M. RAGATZ, IAN R. SINCLAIR, MICHAEL W. THORP, JARED T. BUSCHETTE, and CRAIG D. GRIMES. "Maternal enhancement of cytotype regulation in Drosophila melanogaster by genetic interactions between telomeric P elements and non-telomeric transgenic P elements." Genetics Research 94, no. 6 (2012): 339–51. http://dx.doi.org/10.1017/s0016672312000523.

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SummaryThe X-linked telomeric P elements (TPs) TP5 and TP6 regulate the activity of the entire P element family because they are inserted in a major locus for the production of Piwi-interacting RNAs (piRNAs). The potential for this cytotype regulation is significantly strengthened when either TP5 or TP6 is combined with a non-telomeric X-linked or autosomal transgene that contains a P element. By themselves, none of the transgenic P elements have any regulatory ability. Synergism between the telomeric and transgenic P elements is much greater when the TP is derived from a female. Once an enhan

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25

Robertson, H. M., C. R. Preston, R. W. Phillis, D. M. Johnson-Schlitz, W. K. Benz, and W. R. Engels. "A stable genomic source of P element transposase in Drosophila melanogaster." Genetics 118, no. 3 (1988): 461–70. http://dx.doi.org/10.1093/genetics/118.3.461.

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Abstract A single P element insert in Drosophila melanogaster, called P[ry+ delta 2-3](99B), is described that caused mobilization of other elements at unusually high frequencies, yet is itself remarkably stable. Its transposase activity is higher than that of an entire P strain, but it rarely undergoes internal deletion, excision or transposition. This element was constructed by F. Laski, D. Rio and G. Rubin for other purposes, but we have found it to be useful for experiments involving P elements. We demonstrate that together with a chromosome bearing numerous nonautonomous elements it can b

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26

Lewis, Alan P., and John F. Y. Brookfield. "Movement of Drosophila melanogaster transposable elements other than P elements in a P-M hybrid dysgenic cross." Molecular and General Genetics MGG 208, no. 3 (1987): 506–10. http://dx.doi.org/10.1007/bf00328147.

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27

Rasmusson, K. E., M. J. Simmons, J. D. Raymond, and C. F. McLarnon. "Quantitative effects of P elements on hybrid dysgenesis in Drosophila melanogaster." Genetics 124, no. 3 (1990): 647–62. http://dx.doi.org/10.1093/genetics/124.3.647.

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Abstract Genetic analyses involving chromosomes from seven inbred lines derived from a single M' strain were used to study the quantitative relationships between the incidence and severity of P-M hybrid dysgenesis and the number of genomic P elements. In four separate analyses, the mutability of snw, a P element-insertion mutation of the X-linked singed locus, was found to be inversely related to the number of autosomal P elements. Since snw mutability is caused by the action of the P transposase, this finding supports the hypothesis that genomic P elements titrate the transposase present with

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28

Roche, Siobhan E., and Donald C. Rio. "Trans-Silencing by P Elements Inserted in Subtelomeric Heterochromatin Involves the Drosophila Polycomb Group Gene, Enhancer of zeste." Genetics 149, no. 4 (1998): 1839–55. http://dx.doi.org/10.1093/genetics/149.4.1839.

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Анотація:

AbstractDrosophila P-element transposition is regulated by a maternally inherited state known as P cytotype. An important aspect of P cytotype is transcriptional repression of the P-element promoter. P cytotype can also repress non-P-element promoters within P-element ends, suggesting that P cytotype repression might involve chromatin-based transcriptional silencing. To learn more about the role of chromatin in P cytotype repression, we have been studying the P strain Lk-P(1A). This strain contains two full-length P elements inserted in the heterochromatic telomere-associated sequences (TAS el

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29

Higuet, Dominique, Dominique Anxolabéhére, and Danielle Nouaud. "A particular P-element insertion is correlated to the P-induced hybrid dysgenesis repression in Drosophila melanogaster." Genetical Research 60, no. 1 (1992): 15–24. http://dx.doi.org/10.1017/s0016672300030627.

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SummaryTransposable P elements in Drosophila melanogaster cause hybrid dysgenesis if their mobility is not repressed. The ability to regulate the dysgenic activity of the P elements depends on several mechanisms, one of which hypothesized that a particular deleted P element (the KP element) results in a non-susceptibility which is biparentally transmitted. In this study totally nonsusceptible lines, and susceptible lines containing exclusively KP elements (IINS2 line and IIS2 line) were isolated from a M' strain. We show that non-susceptibility is correlated with a particular insertion of one

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30

Ronsseray, Stéphane, Antoine Boivin, and Dominique Anxolabéhère. "P-Element Repression in Drosophila melanogaster by Variegating Clusters of P-lacZ-white Transgenes." Genetics 159, no. 4 (2001): 1631–42. http://dx.doi.org/10.1093/genetics/159.4.1631.

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Abstract In Drosophila, clusters of P transgenes (P-lac-w) display a variegating phenotype for the w marker. In addition, X-ray-induced rearrangements of chromosomes bearing such clusters may lead to enhancement of the variegated phenotype. Since P-lacZ transgenes in subtelomeric heterochromatin have some P-element repression abilities, we tested whether P-lac-w clusters also have the capacity to repress P-element activity in the germline. One cluster (T-1), located on a rearranged chromosome (T2;3) and derived from a line bearing a variegating tandem array of seven P-lac-w elements, partially

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31

Good, Allen G., and Donal A. Hickey. "Hybrid dysgenesis in Drosophila melanogaster: the elimination of P elements through repeated backcrossing to an M-type strain." Genome 29, no. 1 (1987): 195–200. http://dx.doi.org/10.1139/g87-033.

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The rapid increase in the frequency of P elements in natural populations of Drosophila melanogaster has led to the suggestion that these elements can spread in nature through replicative transposition. In an attempt to model the introduction of a small number of P flies into an M population we backcrossed P flies and their offspring to M flies. Two components of dysgenesis, P element activity and P element copy number (measured by DNA hybridization), were monitored each generation. In these experiments P elements were not capable of spreading rapidly enough to maintain 30–50 copies per fly and

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32

Rakviashvili, G. "Primitive elements of free Lie $p$-algebras." Tbilisi Mathematical Journal 8, no. 2 (2015): 35–40. http://dx.doi.org/10.1515/tmj-2015-0008.

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33

Young, Scott. "Trace Elements in Soils - by Hooda, P." European Journal of Soil Science 61, no. 6 (2010): 1119–20. http://dx.doi.org/10.1111/j.1365-2389.2010.01302.x.

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34

Heiden, Zachariah M., Marta E. G. Mosquera, and Harkesh B. Singh. "Inorganic chemistry of the p-block elements." Dalton Transactions 48, no. 20 (2019): 6666–68. http://dx.doi.org/10.1039/c9dt90098e.

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35

Leung, A. Y. T., and Bin Zhu. "Fourier p-elements for curved beam vibrations." Thin-Walled Structures 42, no. 1 (2004): 39–57. http://dx.doi.org/10.1016/s0263-8231(03)00122-8.

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36

Ardakov, Konstantin, and Simon Wadsley. "Characteristic elements for $p$-torsion Iwasawa modules." Journal of Algebraic Geometry 15, no. 2 (2006): 339–77. http://dx.doi.org/10.1090/s1056-3911-05-00415-7.

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37

Crestani, Eleonora, and Pablo Spiga. "Fixed-point-free elements in p-groups." Israel Journal of Mathematics 180, no. 1 (2010): 413–24. http://dx.doi.org/10.1007/s11856-010-0109-7.

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38

Vanti, M. G., A. Raizer, and Y. Marechal. "h-p adaptivity with hierarchic hexahedral elements." IEEE Transactions on Magnetics 34, no. 5 (1998): 3272–75. http://dx.doi.org/10.1109/20.717768.

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39

Singh, Anurag K. "$p$-torsion elements in local cohomology modules." Mathematical Research Letters 7, no. 2 (2000): 165–76. http://dx.doi.org/10.4310/mrl.2000.v7.n2.a3.

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40

Engels, William R. "The origin of P elements inDrosophila melanogaster." BioEssays 14, no. 10 (1992): 681–86. http://dx.doi.org/10.1002/bies.950141007.

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41

Lickiss, Paul D. "Cluster molecules of the p-block elements." Journal of Organometallic Chemistry 494, no. 1-2 (1995): C24. http://dx.doi.org/10.1016/0022-328x(95)90088-v.

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42

Babuška, I., and H. C. Elman. "Performance of theh-p version of the finite element method with various elements." International Journal for Numerical Methods in Engineering 36, no. 15 (1993): 2503–23. http://dx.doi.org/10.1002/nme.1620361502.

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43

Good, A. G., G. A. Meister, H. W. Brock, T. A. Grigliatti, and D. A. Hickey. "Rapid spread of transposable p elements in experimental populations of Drosophila melanogaster." Genetics 122, no. 2 (1989): 387–96. http://dx.doi.org/10.1093/genetics/122.2.387.

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Анотація:

Abstract The invasion of P elements in natural populations of Drosophila melanogaster was modeled by establishing laboratory populations with 1%, 5% and 10% P genomes and monitoring the populations for 20 generations. In one experiment, the ability of flies to either induce or suppress gonadal sterility in different generations was correlated with the amount of P element DNA. In a second experiment, the percentage of genomes that contained P elements, and the distribution of P elements among individual flies was monitored. The ability to induce gonadal dysgenesis increased rapidly each generat

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44

BELINCO, CARINA, STEPHANIE N. DIPRIMA, RYAN E. WOLFF, MICHAEL W. THORP, JARED T. BUSCHETTE, and MICHAEL J. SIMMONS. "Cytotype regulation in Drosophila melanogaster: synergism between telomeric and non-telomeric P elements." Genetics Research 91, no. 6 (2009): 383–94. http://dx.doi.org/10.1017/s0016672309990322.

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Анотація:

SummaryThe X-linked telomeric P elements TP5 and TP6 interact synergistically with non-telomeric P elements to repress hybrid dysgenesis. In this repression, the telomeric P elements exert maternal effects, which, however, are not sufficient to establish synergism with the non-telomeric P elements. Once synergism is established, the capacity to repress dysgenesis in the offspring of a cross persists for at least two generations after removing the telomeric P element from the genotype. At the molecular level, synergism between telomeric and non-telomeric P elements is correlated with effective

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45

Xu, Jian-Hong, Isaku Osawa, Suguru Tsuchimoto, Eiichi Ohtsubo, and Hisako Ohtsubo. "Two new SINE elements, p-SINE2 and p-SINE3, from rice." Genes & Genetic Systems 80, no. 3 (2005): 161–71. http://dx.doi.org/10.1266/ggs.80.161.

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46

Munshi, Sachin, and Rongwei Yang. "Self-adjoint elements in the pseudo-unitary group U(p,p)." Linear Algebra and its Applications 560 (January 2019): 100–113. http://dx.doi.org/10.1016/j.laa.2018.10.001.

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47

Yadchenko, A. A. "Spectra of p-elements of finite p-solvable complex linear groups." Mathematical Notes of the Academy of Sciences of the USSR 50, no. 3 (1991): 975–80. http://dx.doi.org/10.1007/bf01156146.

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48

KAPLAN, GIL, and DAN LEVY. "SOLVABILITY OF FINITE GROUPS VIA CONDITIONS ON PRODUCTS OF 2-ELEMENTS AND ODD p-ELEMENTS." Bulletin of the Australian Mathematical Society 82, no. 2 (2010): 265–73. http://dx.doi.org/10.1017/s0004972710000079.

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AbstractWe observe that a solvability criterion for finite groups, conjectured by Miller [The product of two or more groups, Trans. Amer. Math. Soc.12 (1911)] and Hall [A characteristic property of soluble groups, J. London Math. Soc.12 (1937)] and proved by Thompson [Nonsolvable finite groups all of whose local subgroups are solvable, Bull. Amer. Math. Soc.74(3) (1968)], can be sharpened as follows: a finite group is nonsolvable if and only if it has a nontrivial 2-element and an odd p-element, such that the order of their product is not divisible by either 2 or p. We also prove a solvability

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49

Mackay, Trudy F. C. "Transposable elements and fitness in Drosophila melanogaster." Genome 31, no. 1 (1989): 284–95. http://dx.doi.org/10.1139/g89-046.

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Transposable elements constitute a significant fraction of the Drosophila melanogaster genome. The five families of moderately repeated transposable elements identified to date occupy dispersed and variable genomic locations, but have relatively constant copy numbers per individual. What effect to these elements have on the fitness of the individuals harboring them? Experimental evidence relating to this question is reviewed. The relevant data fall into two broad categories. The first involves the determination of the distribution of transposable elements in natural populations, by restriction

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50

LEUNG, A. Y. T., and B. ZHU. "HEXAHEDRAL FOURIER p-ELEMENTS FOR VIBRATION OF PRISMATIC SOLIDS." International Journal of Structural Stability and Dynamics 04, no. 01 (2004): 125–38. http://dx.doi.org/10.1142/s0219455404001100.

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Fourier p-elements of trapezoidal and cubical hexahedron shapes for the free vibration analysis of 3D elastic solids are presented. Trigonometric functions are used as enriching functions to avoid ill-conditioning problems associated with high order polynomials. The element matrices are analytically integrated in closed form. With the additional Fourier degrees-of-freedom, the accuracy of the computed natural frequencies is greatly improved. As an example, the natural frequencies of a cantilever cube are analyzed by a rectangular hexahedron Fourier p-element, two trapezoidal hexahedron Fourier

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