Search Results - "Howells, A J"

Mutational analysis of the Traffic ATPase (ABC) transporters involved in uptake of eye pigment precursors in Drosophila melanogaster: implications for structure-function relationships by Ewart, G.D, Cannell, D, Cox, G.B, Howells, A.J

“…The white, brown, and scarlet genes of Drosophila melanogaster encodes three proteins that belong to the Traffic ATPase superfamily of transmembrane permeases…”
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The 43-kilodalton N-terminal fragment of the DNA gyrase B protein hydrolyzes ATP and binds coumarin drugs by Ali, Janid A, Jackson, Andrew P, Howells, Alison J, Maxwell, Anthony

“…We have cloned and overexpressed a gene encoding a 43-kDa protein corresponding to the N-terminal fragment of the DNA gyrase B subunit. We show that this…”
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Cloning and characterization of the scarlet gene of Drosophila melanogaster by Tearle, R. G, Belote, J. M, McKeown, M, Baker, B. S, Howells, A. J

“…DNA from the scarlet (st) region of Drosophila melanogaster has been cloned by chromosome walking, using the breakpoints of a new X-ray-induced third…”
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Genomic sequences with homology to the P element of Drosophila melanogaster occur in the blowfly Lucilia cuprina by Perkins, H.D, Howells, A.J

“…We have cloned two DNA elements (Lu-P1 and Lu-P2) from the Australian sheep blowfly Lucilia cuprina that are similar to the transposable P element of…”
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Immunogold localization of GyrA and GyrB proteins in Escherichia coli by Thornton, M, Armitage, M, Maxwell, A, Dosanjh, B, Howells, A. J, Norris, V, Sigee, D. C

“…1 School of Biological Sciences, University of Manchester, UK 2 Departments of Biochemistry, University of Leicester, UK 3 Departments of Microbiology,…”
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ABC transporters involved in transport of eye pigment precursors in Drosophila melanogaster by Ewart, G D, Howells, A J

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Mutations in the white gene of Drosophila melanogaster affecting ABC transporters that determine eye colouration by Mackenzie, Susan M., Brooker, Michael R., Gill, Timothy R., Cox, Graeme B., Howells, Antony J., Ewart, Gary D.

“…The white, brown and scarlet genes of Drosophila melanogaster encode proteins which transport guanine or tryptophan (precursors of the red and brown eye colour…”
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The hermit transposable element of the Australian sheep blowfly, Lucilia cuprina, belongs to the hAT family of transposable elements by Coates, C J, Johnson, K N, Perkins, H D, Howells, A J, O'Brochta, D A, Atkinson, P W

“…We report the cloning of hermit, a member of the hAT family of transposable elements from the genome of the Australian sheep blowfly, Lucilia cuprina. Hermit…”
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The structure, sequence and developmental pattern of expression of the white gene in the blowfly Lucilia cuprina by Garcia, R L, Perkins, H D, Howells, A J

“…We have sequenced the complete coding region of the white gene of Lucilia cuprina. Strong sequence identity exists between this gene and its homologue from…”
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Ciprofloxacin affects conformational equilibria of DNA gyrase A in the presence of magnesium ions by Sissi, Claudia, Perdonà, Elisabetta, Domenici, Enrico, Feriani, Aldo, Howells, Alison J, Maxwell, Anthony, Palumbo, Manlio

“…The conformational equilibria of the A subunit of DNA gyrase (GyrA), of its 59 kDa N-terminal fragment (GyrA59) and of the quinolone-resistant Ser-Trp83 mutant…”
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Locking the ATP-operated clamp of DNA gyrase: probing the mechanism of strand passage by Williams, Nicola L, Howells, Alison J, Maxwell, Anthony

“…DNA gyrase catalyses DNA supercoiling by passing one segment of DNA (the T segment) through another (the G segment) in a reaction coupled to the binding and…”
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Sub-cellular localisation of the white/scarlet ABC transporter to pigment granule membranes within the compound eye of Drosophila melanogaster by Mackenzie, S M, Howells, A J, Cox, G B, Ewart, G D

“…The white, scarlet, and brown genes of Drosophila melanogaster encode ABC transporters involved with the uptake and storage of metabolic precursors to the red…”
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Clerocidin, a terpenoid antibiotic, inhibits bacterial DNA gyrase by McCullough, J E, Muller, M T, Howells, A J, Maxwell, A, O'Sullivan, J, Summerill, R S, Parker, W L, Wells, J S, Bonner, D P, Fernandes, P B

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A biochemical analysis of the interaction of DNA gyrase with the bacteriophage Mu, pSC101 and pBR322 strong gyrase sites: the role of DNA sequence in modulating gyrase supercoiling and biological activity by Oram, Mark, Howells, Alison J., Maxwell, Anthony, Pato, Martin L.

“…Summary Replication of bacteriophage Mu DNA, a process requiring efficient synapsis of the prophage ends, takes place within the confines of the Escherichia…”
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The interaction of DNA gyrase with the bacterial toxin CcdB: evidence for the existence of two gyrase-CcdB complexes by Kampranis, S C, Howells, A J, Maxwell, A

“…CcdB is a bacterial toxin that targets DNA gyrase. Analysis of the interaction of CcdB with gyrase reveals two distinct complexes. An initial complex (alpha)…”
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Cloning and characterization of the white and topaz eye color genes from the sheep blowfly Lucilia cuprina by ELIZUR, A, VACEK, A. T, HOWELLS, A. J

“…Clones carrying the white and topaz eye color genes have been isolated from genomic DNA libraries of the blowfly Lucilia cuprina using cloned DNA from the…”
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The interaction of the F plasmid killer protein, CcdB, with DNA gyrase: induction of DNA cleavage and blocking of transcription by Critchlow, S E, O'Dea, M H, Howells, A J, Couturier, M, Gellert, M, Maxwell, A

“…We have studied the interaction of the F plasmid killer protein CcdB with its intracellular target DNA gyrase. We confirm that CcdB can induce DNA cleavage by…”
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The humoral immune response of sheep to antigens from larvae of the sheep blowfly (Lucilia cuprina) by Skelly, P J, Howells, A J

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Characterization and chromosomal distribution of a tandemly repeated DNA sequence from the Australian sheep blowfly, Lucilia cuprina by Perkins, H.D, Bedo, D.G, Howells, A.J

“…In the course of making a Lucilia cuprina genomic DNA library, a ladder of bands was seen in partial Sau3A digests. Complete digestion reduced this ladder to…”
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Molecular characterization of spontaneous mutations at the scarlet locus of Drosophila melanogaster by ten Have, J F, Green, M M, Howells, A J

“…Six spontaneous mutations of the scarlet (st) locus of Drosophila melanogaster have been studied at the molecular level. Two of the mutants (st1 and stsp)…”
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