187,405 research outputs found
Construction of a 1.2-Mb BAC/PAC contig of the porcine gene RYR1 region on SSC 6q1.2 and comparative analysis with HSA 19q13.13
No full textWe screened a porcine bacterial artificial chromosome (BAC) and a P1 derived artificial chromosome (PAC) library to construct a sequence-ready similar to1.2-Mb BAC/PAC contig of the ryanodine receptor-1 gene (RYR1) region on porcine chromosome (SSC) 6q1.2. This genomic segment is of special interest because it harbors the locus for stress susceptibility in pigs and a putative quantitative trait locus for muscle growth. Detailed physical mapping of this gene-rich region allowed us to assign to this contig 17 porcine genes orthologous to known human chromosome 19 genes. Apart from the relatively well-characterized porcine gene RYR1, the other 16 genes represent novel chromosomal assignments and 14 genes have been cloned for the first time in pig. Comparative analysis of the porcine BAC/PAC contig with the human chromosome (HSA) 19q13.13 map revealed a completely conserved gene order of this segment between pig and human. A detailed porcine-human-mouse comparative map of this region was constructed
Molecular characterization and chromosome assignment of the porcine gene COX7A1 coding for the muscle specific cytochrome c oxidase subunit VIIa-M
No full textThe COX7A1 gene encodes a heart- and muscle-specific isoform of the subunit VIIA of cvtochrome c oxidase, Which is the last component of the mitochondrial electron transfer chain, Cloning and characterization of the porcine COX7A1 gene revealed a highly conserved organization with respect to other mammalian COX7A1 orthologs. The porcine gene consists of four exons spanning approximately 1.5 kb and codes for a peptide of 80 amino acids. The COX7A1 gene showed no variation between pigs from different breeds. The gene was assigned by FISH and RH-mapping to SSC 6q1.1 --> q1.2 which is in agreement with previously established comparative maps. Copyright (C) 2002 S. Karger AG, Basel
Marmosops (Sciophanes) magdalenae Diaz-Nieto and Voss 2016
No full text<i>Marmosops</i> (<i>Sciophanes</i>) <i>magdalenae</i> Díaz-Nieto and Voss, 2016 <p>TYPE MATERIAL AND TYPE LOCALITY: ICN 19924, the holotype by original designation, consists of the skin and skull of an adult female collected at the Reserva Biológica Cachalú (6.12° N, 73.13° W; 1940 m), Santander department, Colombia.</p> <p>SYNONYMS: None.</p> <p> DISTRIBUTION: <i>Marmosops magdalenae</i> is known from lowland and montane forests (from ca. 100 to 1900 m) in the valley of the Río Magdalena and in the Cordillera Oriental (eastern Andes) of Colombia (Díaz-Nieto and Voss, 2016: fig. 28).</p> <p> REMARKS: For illustrations, description, measurement data, and morphological comparisons with closely related congeners, see Díaz-Nieto and Voss (2016), who assigned <i>Marmosops magdalenae</i> to the Bishopi Group based on phylogenetic analyses of DNA sequence data previously reported by Díaz-Nieto et al. (2016b).</p>Published as part of <i>Voss, Robert S., 2022, An Annotated Checklist Of Recent Opossums (Mammalia: Didelphidae), pp. 1-77 in Bulletin of the American Museum of Natural History 2022 (455)</i> on page 51, DOI: 10.1206/0003-0090.455.1.1, <a href="http://zenodo.org/record/7161371">http://zenodo.org/record/7161371</a>
Generation of a 5.5-Mb BAC/PAC contig of pig chromosome 6q1.2 and its integration with existing RH, genetic and comparative maps
No full textWe generated a sequence-ready BAC/PAC contig spanning approximately 5.5 Mb on porcine chromosome 6q1.2, which represents a very gene-rich genome region. STS content mapping was used as the main strategy for the assembly of the contig and a total of 6 microsatellite markers, 53 generelated STS and 116 STS corresponding to BAC and PAC end sequences were analyzed. The contig comprises 316 BAC and PAC clones covering the region between the genes GPI and LIPE. The correct contig assembly was verified by RH-mapping of STS markers and comparative mapping of BAC/PAC end sequences using BLAST searches. The use of microsatellite primer pairs allowed the integration of the physical maps with the genetic map of this region. Comparative mapping of the porcine BAC/PAC contig with respect to the gene-rich region on the human chromosome 19q13.1 map revealed a completely conserved gene order of this segment, however, physical distances differ somewhat between HSA19q13.1 and SSC6q1.2. Three major differences in DNA content between human and pig are found in two large intergenic regions and in one region of a clustered gene family, respectively. While there is a complete conservation of gene order between pig and human, the comparative analysis with respect to the rodent species mouse and rat shows one breakpoint where a genome segment is inverted. Copyright (C) 2003 S. Karger AG, Basel
Abstract shapes of RNA
No full textGiegerich R, Voss B, Rehmsmeier M. Abstract shapes of RNA. Nucleic Acids Research. 2004;32(16):4843-4851.The function of a non-protein-coding RNA is often determined by its structure. Since experimental determination of RNA structure is time-consuming and expensive, its computational prediction is of great interest, and efficient solutions based on thermodynamic parameters are known. Frequently, however, the predicted minimum free energy structures are not the native ones, leading to the necessity of generating suboptimal solutions. While this can be accomplished by a number of programs, the user is often confronted with large outputs of similar structures, although he or she is interested in structures with more fundamental differences, or, in other words, with different abstract shapes. Here, we formalize the concept of abstract shapes and introduce their efficient computation. Each shape of an RNA molecule comprises a class of similar structures and has a representative structure of minimal free energy within the class. Shape analysis is implemented in the program RNAshapes. We applied RNAshapes to the prediction of optimal and suboptimal abstract shapes of several RNAs. For a given energy range, the number of shapes is considerably smaller than the number of structures, and in all cases, the native structures were among the top shape representatives. This demonstrates that the researcher can quickly focus on the structures of interest, without processing up to thousands of near-optimal solutions. We complement this study with a large-scale analysis of the growth behaviour of structure and shape spaces. RNAshapes is available for download and as an online version on the Bielefeld Bioinformatics Server
X-ray emissions from progenitors of type Ia Supernovae
No full textContains fulltext :
115725.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 15 november 2013Promotores : Nelemans, G.A., Dominik, C. Co-promotor : Voss, R.107 p
Synorchestes grisescens Voss
No full textSynorchestes grisescens Voss (Figs. 5 –8, 19–20, 25– 26) Synorchestes grisescens Voss, 1958: 103 (habitus illustration; China); Morimoto & Miyakawa, 1996: 76 (habitus photo and figures of ventral body, head and rostrum, hind leg and its femoral apodeme, antenna of male; Taiwan); Kojima & Morimoto, 1996: 116 (figures of male tergite, metendosternite, spermatheca and spiculum ventrale). Description See Voss (1958) and Morimoto & Miyalawa (1996) for description except genitalia (Figs. 5 –8, 9–12, 19–20, 25– 26): aedeagus with short setae on anterior margin (as in S. indicus); spiculum gastrale longer than aedeagal body; bladal part of female sternite 8 longer than apodeme; spermatheca with ramus not developed. This species is very similar to S. indicus except for the characters provided in the key. Specimens examined. 1 male, Holotype (preserved in the Zoologisches Forschungsmuseum Alexander Koenig, Bonn); 1 female, Shi Nan Shanm near Liu Kui, S-Taiwan, 29.IV. 1986, K. Baba (ELKU); 1 male, Shan Piug (1000 m), nea Liu Kui, S-Taiwan, 29.IV. 1986, K. Baba (ELKU); 1 female, near Liukuei, Kaosiung Hs., Taiwan, 5–9.iv. 1995, H. Kojima (ELKU). Distribution. China (Fukien), Taiwan.Published as part of Ayri, Shaloo, Kojima, Hiroaki & Y, R A M A M U Rt H, 2012, Flea weevils of the genus Synorchestes Voss (Coleoptera, Curculionidae, Curculioninae, Rhamphini), with description of a second species from India, pp. 74-80 in Zootaxa 3568 on page 80, DOI: 10.5281/zenodo.21381
Synorchestes Voss
No full textGenus Synorchestes Voss Synorchestes Voss, 1958: 103 (type species: Synorchestes grisescens Voss, 1958; China: Fukien; Anthonominae: Rhynchaenini); Morimoto & Miyakawa, 1996: 75 (Rhamphini); Kojima & Morimoto, 1996: 110 (key), 115; Alonso- Zarazaga & Lyal, 1999: 82 (Curculioninae: Rhamphini: Rhamphina). The diagnosis of this genus given by Morimoto & Miyakawa (1996) holds for the new species except that the following features should be modified to include the second species: Rostrum shorter than (male) or nearly as long as (female) pronotum, antennae with scape and basal four segments of funicle flattened dorso-ventrally, apical segment of club longer in male than that in female and, mesosternal process nearly as wide as or a little narrower than middle coxa. Remarks. This genus is characterized by the following combination of features: Antennae with club loosely segmented; pygidium (female) (Fig. 28) and propygidium (male) (Fig. 29) broadly exposed; tibiae unarmed at apex, tarsal groove not ascended; hind femora weakly swollen, relatively more slender than those of other genera in this tribe; 7 th tergite with pair of files for stridulation at anterior margin (Fig. 30); bladal part of 8 th sternite bilobed in female, and spermatheca with gland close to duct. Kojima (2011) proposed that Megorchestes was probably related to Synorchestes, but the former differs in having the fore and middle tibiae armed at apex and the prosternum is deeply emarginate and depressed in front of the coxae. Distribution. China, Taiwan, India (new country record).Published as part of Ayri, Shaloo, Kojima, Hiroaki & Y, R A M A M U Rt H, 2012, Flea weevils of the genus Synorchestes Voss (Coleoptera, Curculionidae, Curculioninae, Rhamphini), with description of a second species from India, pp. 74-80 in Zootaxa 3568 on page 75, DOI: 10.5281/zenodo.21381
Synorchestes Voss
No full textKey to species of <i>Synorchestes</i> Voss <p> 1 Antennal club with 3rd segment longer (male) or shorter (female) than basal two segments combined (Fig. 19, 20). Hind tarsus with 1st segment slightly longer than broad (Fig. 25, 26). Spermatheca with ramus not developed (Fig. 12). Bladal part of female sternite 8 longer than apodeme (Fig. 13). Length: 4.5–5.0 mm. China, Taiwan.................. <i>S. grisescens</i> Voss</p> <p> 1’ Antennal club with 3rd segment longer than basal two segments combined in both sexes (Fig. 21, 22). Hind tarsus with 1st segment 1.5x longer than broad (Fig. 23, 24). Spermatheca with ramus developed (Fig. 17). Bladal part of female sternite 8 nearly as long as apodeme (Fig. 18). Length: 4.0– 4.5 mm. India........................................ <i>S. indicus</i> <b>sp. nov.</b></p>Published as part of <i>Ayri, Shaloo, Kojima, Hiroaki & Y, R A M A M U Rt H, 2012, Flea weevils of the genus Synorchestes Voss (Coleoptera, Curculionidae, Curculioninae, Rhamphini), with description of a second species from India, pp. 74-80 in Zootaxa 3568</i> on page 75, DOI: <a href="http://zenodo.org/record/213812">10.5281/zenodo.213812</a>
Trasformazioni delle reti di Voss
No full textNel presente lavoro si ripiglia la determinazione delle reti di Voss di uno spazio lineare fatta da R. Calapso e si determinano le funzioni di Gauss , della rete per mezzo degli integrali della equazione della superficie a curvatura costante dell'.
Detta esplicitazione si raggiunge introducendo una coppia > di normali, e mediante essa è possibile fare vedere, che scambiando fra loro certe funzioni e (che entrano nella determinazione della rete) questa rete si trasforma in un’altra rete di Voss, che è legata alla prima mediante la trasformazione di R. CALAPSO
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