TY - JOUR AU - Sipos, Botond AU - Massingham, T AU - Jordan, GE AU - Goldman, N TI - PhyloSim - Monte Carlo simulation of sequence evolution in the R statistical computing environment JF - BMC BIOINFORMATICS J2 - BMC BIOINFORMATICS VL - 12 PY - 2011 PG - 8 SN - 1471-2105 DO - 10.1186/1471-2105-12-104 UR - https://m2.mtmt.hu/api/publication/1921773 ID - 1921773 AB - Background: The Monte Carlo simulation of sequence evolution is routinely used to assess the performance of phylogenetic inference methods and sequence alignment algorithms. Progress in the field of molecular evolution fuels the need for more realistic and hence more complex simulations, adapted to particular situations, yet current software makes unreasonable assumptions such as homogeneous substitution dynamics or a uniform distribution of indels across the simulated sequences. This calls for an extensible simulation framework written in a high-level functional language, offering new functionality and making it easy to incorporate further complexity. Results: PhyloSim is an extensible framework for the Monte Carlo simulation of sequence evolution, written in R, using the Gillespie algorithm to integrate the actions of many concurrent processes such as substitutions, insertions and deletions. Uniquely among sequence simulation tools, PhyloSim can simulate arbitrarily complex patterns of rate variation and multiple indel processes, and allows for the incorporation of selective constraints on indel events. User-defined complex patterns of mutation and selection can be easily integrated into simulations, allowing PhyloSim to be adapted to specific needs. Conclusions: Close integration with R and the wide range of features implemented offer unmatched flexibility, making it possible to simulate sequence evolution under a wide range of realistic settings. We believe that PhyloSim will be useful to future studies involving simulated alignments. LA - English DB - MTMT ER - TY - JOUR AU - Bihari, Péter AU - Sipos, Botond AU - Melika, George AU - Feher, B AU - Somogyi, Kálmán AU - Stone, GN AU - Pénzes, Zsolt TI - Western Palaearctic phylogeography of an inquiline oak gall wasp, Synergus umbraculus JF - BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY J2 - BIOL J LINN SOC VL - 102 PY - 2011 IS - 4 SP - 750 EP - 764 PG - 15 SN - 0024-4066 DO - 10.1111/j.1095-8312.2010.01609.x UR - https://m2.mtmt.hu/api/publication/1921728 ID - 1921728 AB - Insect-induced galls on plants comprise species-rich but self-contained communities of herbivores and natural enemies. In the present study, we focus on galls induced by cynipid gall wasps on oaks, and on the least-known trophic level that these galls contain: inquilines. These insects, also cynipids, feed on gall tissue and are an abundant but taxonomically poorly understood part of an otherwise well-studied system. We used DNA sequence data to examine spatial patterns in the genetic diversity of Synergus umbraculus Olivier 1791 (Hymenoptera: Cynipidae: Synergini), a widespread species attacking many host galls across the Western Palaearctic. Analysis of 239 cytochrome b sequences revealed eight haplogroups showing significant phylogeographic pattern across the Western Palaearctic, corresponding to putative glacial refugia in Iberia, Central Europe, Turkey, and Iran. There were significant genetic discontinuities across the Pyrenees and the Anatolian diagonal but no impact of the Alps, suggesting that significant discontinuities have biotic rather than physical causes. Detailed analysis of sites in the Carpathian Basin reveal a high diversity and low spatial structure, and identify Central Europe as the source of colonists for Quaternary colonization of Germany, France, and Britain. We found no evidence for host-associated differentiation of S. umbraculus lineages associated with the most common cynipid host galls, suggesting frequent shifts within the host gall assemblage by inquiline lineages. (c) 2011 The Linnean Society of London, Biological Journal of the Linnean Society, 2011, 102, 750-764. LA - English DB - MTMT ER - TY - THES AU - Sipos, Botond TI - A Nimrod szupergéncsalád evolúciója PB - Szegedi Tudományegyetem (SZTE) PY - 2010 SP - 94 UR - https://m2.mtmt.hu/api/publication/30773087 ID - 30773087 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Somogyi, Kálmán AU - Sipos, Botond AU - Pénzes, Zsolt AU - Andó, István TI - A conserved gene cluster as a putative functional unit in insect innate immunity JF - FEBS LETTERS J2 - FEBS LETT VL - 584 PY - 2010 IS - 21 SP - 4375 EP - 4378 PG - 4 SN - 0014-5793 DO - 10.1016/j.febslet.2010.10.014 UR - https://m2.mtmt.hu/api/publication/1921481 ID - 1921481 AB - The Nimrod gene superfamily is an important component of the innate immune response. The majority of its member genes are located in close proximity within the Drosophila melanogaster genome and they lie in a larger conserved cluster ("Nimrod cluster"), made up of non-related groups (families, superfamilies) of genes. This cluster has been a part of the Arthropod genomes for about 300-350 million years. The available data suggest that the Nimrod cluster is a functional module of the insect innate immune response. (C) 2010 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Márkus, Róbert AU - Laurinyecz, Barbara AU - Kurucz, Judit Éva AU - Honti, Viktor AU - Bajusz, Izabella AU - Sipos, Botond AU - Somogyi, Kálmán AU - Kronhamn, J AU - Hultmark, D AU - Andó, István TI - Sessile hemocytes as a hematopoietic compartment in drosophila melanogaster JF - PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA J2 - P NATL ACAD SCI USA VL - 106 PY - 2009 IS - 12 SP - 4805 EP - 4809 PG - 5 SN - 0027-8424 DO - 10.1073/pnas.0801766106 UR - https://m2.mtmt.hu/api/publication/1920757 ID - 1920757 N1 - Cited By :174 Export Date: 30 June 2022 CODEN: PNASA LA - English DB - MTMT ER - TY - JOUR AU - Pénzes, Zsolt AU - Melika, George AU - Bozsóki, Zoltán AU - Bihari, Péter AU - ISTVÁN, MIKÓ AU - MAJID, TAVAKOLI AU - JULI, PUJADE-VILLAR AU - BALÁZS, FEHÉR AU - Fülöp, Dávid Krisztián AU - Szabó, Krisztián AU - Bozsó, Miklós AU - Sipos, Botond AU - Somogyi, Kálmán AU - GRAHAM, N STONE TI - Systematic re-appraisal of the gall-usurping wasp genus Synophrus Hartig, 1843 (Hymenoptera: Cynipidae: Synergini) JF - SYSTEMATIC ENTOMOLOGY J2 - SYST ENTOMOL VL - 34 PY - 2009 IS - 4 SP - 688 EP - 711 PG - 24 SN - 0307-6970 DO - 10.1111/j.1365-3113.2009.00482.x UR - https://m2.mtmt.hu/api/publication/1657683 ID - 1657683 N1 - Megjegyzés-22071211 Z9: 6 AB - Several unanswered questions remain regarding the taxonomy and phylogeny of inquiline gallwasps (Cynipidae: Synergini), obligate inhabitants of plant galls induced primarily by other gallwasps (Cynipidae: Cynipini and Diplolepidini). Here we use morphological and molecular data to revise the inquiline genus Synophrus, members of which are notable for extensively modifying the structure of galls induced by oak gallwasp hosts on oaks in the section Cerris of Quercus subgenus Quercus in the Western Palaearctic. Previous taxonomic treatments have recognized three Western Palaearctic species of Synophrus: S. pilulae, S. politus and S. olivieri. Our results support the establishment of four additional Western Palaearctic species: Synophrus hungaricussp.n., S. libanisp.n., S. syriacussp.n. and S. hispanicussp.n. We describe and diagnose these new taxa, analyse their phylogenetic relationships, and show that Synophrus inquilines are able to impose their own gall phenotypes on those of their hosts. We provide an updated key to Synophrus. LA - English DB - MTMT ER - TY - JOUR AU - Somogyi, Kálmán AU - Sipos, Botond AU - Pénzes, Zsolt AU - Kurucz, Judit Éva AU - Zsámboki, János AU - Hultmark, D AU - Andó, István TI - Evolution of Genes and Repeats in the Nimrod Superfamily JF - MOLECULAR BIOLOGY AND EVOLUTION J2 - MOL BIOL EVOL VL - 25 PY - 2008 IS - 11 SP - 2337 EP - 2347 PG - 11 SN - 0737-4038 DO - 10.1093/molbev/msn180 UR - https://m2.mtmt.hu/api/publication/1918046 ID - 1918046 N1 - Megjegyzés-22206057 DI: 10.1093/molbev/msn180 Megjegyzés-22214091 DI: 10.1093/molbev/msn180 AB - The recently identified Nimrod superfamily is characterized by the presence of a special type of EGF repeat, the NIM repeat, located right after a typical CCXGY/W amino acid motif. On the basis of structural features, nimrod genes can be divided into three types. The proteins encoded by Draper-type genes have an EMI domain at the N-terminal part and only one copy of the NIM motif, followed by a variable number of EGF-like repeats. The products of Nimrod B-type and Nimrod C-type genes (including the eater gene) have different kinds of N-terminal domains, and lack EGF-like repeats but contain a variable number of NIM repeats. Draper and Nimrod C-type (but not Nimrod B-type) proteins carry a transmembrane domain. Several members of the superfamily were claimed to function as receptors in phagocytosis and/or binding of bacteria, which indicates an important role in the cellular immunity and the elimination of apoptotic cells. In this paper, the evolution of the Nimrod superfamily is studied with various methods on the level of genes and repeats. A hypothesis is presented in which the NIM repeat, along with the EMI domain, emerged by structural reorganizations at the end of an EGF-like repeat chain, suggesting a mechanism for the formation of novel types of repeats. The analyses revealed diverse evolutionary patterns in the sequences containing multiple NIM repeats. Although in the Nimrod B and Nimrod C proteins show characteristics of independent evolution, many internal NIM repeats in Eater sequences seem to have undergone concerted evolution. An analysis of the nimrod genes has been performed using phylogenetic and other methods and an evolutionary scenario of the origin and diversification of the Nimrod superfamily is proposed. Our study presents an intriguing example how the evolution of multigene families may contribute to the complexity of the innate immune response. LA - English DB - MTMT ER - TY - JOUR AU - Sipos, Botond AU - Somogyi, Kálmán AU - Andó, István AU - Pénzes, Zsolt TI - T2prhd: a tool to study the patterns of repeat evolution JF - BMC BIOINFORMATICS J2 - BMC BIOINFORMATICS VL - 9 PY - 2008 SP - AR27 SN - 1471-2105 DO - 10.1186/1471-2105-9-27 UR - https://m2.mtmt.hu/api/publication/1916855 ID - 1916855 N1 - AB - Background: The models developed to characterize the evolution of multigene families (such as the birth-and-death and the concerted models) have also been applied on the level of sequence repeats inside a gene/protein. Phylogenetic reconstruction is the method of choice to study the evolution of gene families and also sequence repeats in the light of these models. The characterization of the gene family evolution in view of the evolutionary models is done by the evaluation of the clustering of the sequences with the originating loci in mind. As the locus represents positional information, it is straightforward that in the case of the repeats the exact position in the sequence should be used, as the simple numbering according to repeat order can be misleading. Results: We have developed a novel rapid visual approach to study repeat evolution, that takes into account the exact repeat position in a sequence. The "pairwise repeat homology diagram" visualizes sequence repeats detected by a profile HMM in a pair of sequences and highlights their homology relations inferred by a phylogenetic tree. The method is implemented in a Perl script (t2prhd) available for downloading at http://t2prhd.sourceforge.net and is also accessible as an online tool at http://t2prhd.brc.hu. The power of the method is demonstrated on the EGF-like and fibronectin-III-like (Fn-III) domain repeats of three selected mammalian Tenascin sequences. Conclusion: Although pairwise repeat homology diagrams do not carry all the information provided by the phylogenetic tree, they allow a rapid and intuitive assessment of repeat evolution. We believe, that t2prhd is a helpful tool with which to study the pattern of repeat evolution. This method can be particularly useful in cases of large datasets (such as large gene families), as the command line interface makes it possible to automate the generation of pairwise repeat homology diagrams with the aid of scripts. LA - English DB - MTMT ER - TY - JOUR AU - Álmos, Péter Zoltán AU - Horváth, Szatmár AU - Czibula, Ágnes AU - Raskó, István AU - Sipos, Botond AU - Bihari, Péter AU - Béres, Judit AU - Juhász, Anna AU - Janka, Zoltán AU - Kálmán, János TI - H1 tau haplotype-related genomic variation at 17q21.3 as an Asian heritage of the European Gypsy population JF - HEREDITY J2 - HEREDITY VL - 101 PY - 2008 IS - 5 SP - 416 EP - 419 PG - 4 SN - 0018-067X DO - 10.1038/hdy.2008.70 UR - https://m2.mtmt.hu/api/publication/1309899 ID - 1309899 AB - In this study, we examine the frequency of a 900 kb inversion at 17q21.3 in the Gypsy and Caucasian populations of Hungary, which may reflect the Asian origin of Gypsy populations. Of the two haplotypes (H1 and H2), H2 is thought to be exclusively of Caucasian origin, and its occurrence in other racial groups is likely to reflect admixture. In our sample, the H1 haplotype was significantly more frequent in the Gypsy population (89.8 vs 75.5%, P<0.001) and was in Hardy-Weinberg disequilibrium (P=0.017). The 17q21.3 region includes the gene of microtubule-associated protein tau, and this result might imply higher sensitivity to H1 haplotype-related multifactorial tauopathies among Gypsies. LA - English DB - MTMT ER - TY - CHAP AU - Ronkay, László AU - Benedek, B AU - Csovari, T AU - Kun, A AU - Laszlo, MG AU - Pénzes, Zsolt AU - Peregovits, L AU - Sipos, Botond AU - Szabó, Krisztián AU - Szaboky, C AU - Szeoke, K AU - Varga, Zoltán Sándor ED - Forró, László TI - A magyar lepkefauna rövid jellemzése T2 - A Kárpát-medence állatvilágának kialakulása PB - Magyar Természettudományi Múzeum CY - Budapest SN - 9789637093999 PY - 2007 SP - 133 EP - 142 PG - 10 UR - https://m2.mtmt.hu/api/publication/1915389 ID - 1915389 LA - Hungarian DB - MTMT ER -