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Elisabetta Ullu

Research Profile

Chemicals & Drugs

Phenomena

RNA Interference

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Molecular Sequence Data

Physiology

Genes & Molecular Sequences

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Vanessa D Atayde; Stephen M Beverley; Nicholas Carriero; Joseph B Franklin; Lon-Fye Lye; Timothy Notton; Katherine Owens; Huafang Shi; Christian Tschudi; Elisabetta Ullu
The structure and repertoire of small interfering RNAs in Leishmania (Viannia) braziliensis reveal diversification in the trypanosomatid RNAi pathway.
Nikolay G Kolev; Kiantra Ramey-Butler; George A M Cross; Elisabetta Ullu; Christian Tschudi
Developmental progression to infectivity in Trypanosoma brucei triggered by an RNA-binding protein.
Vanessa D Atayde; Elisabetta Ullu; Nikolay G Kolev
A single-cloning-step procedure for the generation of RNAi plasmids producing long stem-loop RNA.

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2013: Vanessa D Atayde; Stephen M Beverley; Nicholas Carriero; Joseph B Franklin; Lon-Fye Lye; Timothy Notton; Katherine Owens; Huafang Shi; Christian Tschudi; Elisabetta Ullu
The structure and repertoire of small interfering RNAs in Leishmania (Viannia) braziliensis reveal diversification in the trypanosomatid RNAi pathway.
Molecular microbiology 2013;87(3):580-93.
2012: Nikolay G Kolev; Kiantra Ramey-Butler; George A M Cross; Elisabetta Ullu; Christian Tschudi
Developmental progression to infectivity in Trypanosoma brucei triggered by an RNA-binding protein.
Science (New York, N.Y.) 2012;338(6112):1352-3.
2012: Vanessa D Atayde; Elisabetta Ullu; Nikolay G Kolev
A single-cloning-step procedure for the generation of RNAi plasmids producing long stem-loop RNA.
Molecular and biochemical parasitology 2012;184(1):55-8.
2012: Shulamit Michaeli; Mali Romano; Rotem Sorek; Tirza Doniger; Sachin Kumar Gupta; Ron Unger; Damian Visnovezky; Omri Wurtzel; Elisabetta Ullu
RNA-seq analysis of small RNPs in Trypanosoma brucei reveals a rich repertoire of non-coding RNAs.
Nucleic acids research 2012;40(3):1282-98.
2012: Christian Tschudi; Joseph B Franklin; Huafang Shi; Elisabetta Ullu
Small interfering RNA-producing loci in the ancient parasitic eukaryote Trypanosoma brucei.
BMC genomics 2012;13():427.
2012: Rebecca L Barnes; Nikolay G Kolev; Huafang Shi; Christian Tschudi; Elisabetta Ullu
Comparative genomics reveals two novel RNAi factors in Trypanosoma brucei and provides insight into the core machinery.
PLoS pathogens 2012;8(5):e1002678.
2011: Nikolay G Kolev; Christian Tschudi; Elisabetta Ullu
RNA interference in protozoan parasites: achievements and challenges.
Eukaryotic cell 2011;10(9):1156-63.
2011: Vanessa D Atayde; Christian Tschudi; Elisabetta Ullu
The emerging world of small silencing RNAs in protozoan parasites.
Trends in parasitology 2011;27(7):321-7.
2010: Sachin Kumar Gupta; Avraham Hury; Yaara Ziporen; Huafang Shi; Elisabetta Ullu; Shulamit Michaeli
Small nucleolar RNA interference in Trypanosoma brucei: mechanism and utilization for elucidating the function of snoRNAs.
Nucleic acids research 2010;38(20):7236-47.
2010: Joseph B Franklin; Elisabetta Ullu
Biochemical analysis of PIFTC3, the Trypanosoma brucei orthologue of nematode DYF-13, reveals interactions with established and putative intraflagellar transport components.
Molecular microbiology 2010;78(1):173-86.
2010: Eric Aeby; Elisabetta Ullu; Hasmik Yepiskoposyan; Bernd Schimanski; Isabel Roditi; Oliver Mühlemann; André Schneider
tRNASec is transcribed by RNA polymerase II in Trypanosoma brucei but not in humans.
Nucleic acids research 2010;38(17):5833-43.
2010: Lon-Fye Lye; Katherine Owens; Huafang Shi; Silvane M F Murta; Ana Carolina Vieira; Salvatore J Turco; Christian Tschudi; Elisabetta Ullu; Stephen M Beverley
Retention and loss of RNA interference pathways in trypanosomatid protozoans.
PLoS pathogens 2010;6(10):e1001161.
2009: Huafang Shi; Nathalie Chamond; Appolinaire Djikeng; Christian Tschudi; Elisabetta Ullu
RNA interference in Trypanosoma brucei: role of the n-terminal RGG domain and the polyribosome association of argonaute.
The Journal of biological chemistry 2009;284(52):36511-20.
2009: Kristin L Patrick; Huafang Shi; Nikolay G Kolev; Klaus Ersfeld; Christian Tschudi; Elisabetta Ullu
Distinct and overlapping roles for two Dicer-like proteins in the RNA interference pathways of the ancient eukaryote Trypanosoma brucei.
Proceedings of the National Academy of Sciences of the United States of America 2009;106(42):17933-8.
2009: Nikolay G Kolev; Elisabetta Ullu
snoRNAs in Giardia lamblia: a novel role in RNA silencing?
Trends in parasitology 2009;25(8):348-50.
2009: Eric Aeby; Sotiria Palioura; Mascha Pusnik; Janine Marazzi; Allyson Lieberman; Elisabetta Ullu; Dieter Söll; André Schneider
The canonical pathway for selenocysteine insertion is dispensable in Trypanosomes.
Proceedings of the National Academy of Sciences of the United States of America 2009;106(13):5088-92.
2008: Kristin Patrick; Paula M Luz; Jia-Peng Ruan; Huafang Shi; Elisabetta Ullu; Christian Tschudi
Genomic rearrangements and transcriptional analysis of the spliced leader-associated retrotransposon in RNA interference-deficient Trypanosoma brucei.
Molecular microbiology 2008;67(2):435-47.
2007: Jia-Peng Ruan; Shuiyuan Shen; Elisabetta Ullu; Christian Tschudi
Evidence for a capping enzyme with specificity for the trypanosome spliced leader RNA.
Molecular and biochemical parasitology 2007;156(2):246-54.
2007: Jia-Peng Ruan; Elisabetta Ullu; Christian Tschudi
Characterization of the Trypanosoma brucei cap hypermethylase Tgs1.
Molecular and biochemical parasitology 2007;155(1):66-9.
2007: Huafang Shi; Christian Tschudi; Elisabetta Ullu
Depletion of newly synthesized Argonaute1 impairs the RNAi response in Trypanosoma brucei.
RNA (New York, N.Y.) 2007;13(7):1132-9.
2006: Huafang Shi; Christian Tschudi; Elisabetta Ullu
An unusual Dicer-like1 protein fuels the RNA interference pathway in Trypanosoma brucei.
RNA (New York, N.Y.) 2006;12(12):2063-72.
2006: Christian J Janzen; Frederick J van Deursen; Huafang Shi; George A M Cross; Keith Matthews; Elisabetta Ullu
Expression site silencing and life-cycle progression appear normal in Argonaute1-deficient Trypanosoma brucei.
Molecular and biochemical parasitology 2006;149(1):102-7.
2006: Huafang Shi; Christian Tschudi; Elisabetta Ullu
Functional replacement of Trypanosoma brucei Argonaute by the human slicer Argonaute2.
RNA (New York, N.Y.) 2006;12(6):943-7.
2006: George K Arhin; Elisabetta Ullu; Christian Tschudi
2'-O-methylation of position 2 of the trypanosome spliced leader cap 4 is mediated by a 48 kDa protein related to vaccinia virus VP39.
Molecular and biochemical parasitology 2006;147(1):137-9.
2006: George K Arhin; Hongjie Li; Elisabetta Ullu; Christian Tschudi
A protein related to the vaccinia virus cap-specific methyltransferase VP39 is involved in cap 4 modification in Trypanosoma brucei.
RNA (New York, N.Y.) 2006;12(1):53-62.
2005: Huafang Shi; Appolinaire Djikeng; Nathalie Chamond; Huân M Ngô; Christian Tschudi; Elisabetta Ullu
Repression of gene expression by the coliphage MS2 coat protein in Trypanosoma brucei.
Molecular and biochemical parasitology 2005;144(1):119-22.
2005: George K Arhin; Shuiyuan Shen; Iehsus Flores Pérez; Christian Tschudi; Elisabetta Ullu
Downregulation of the essential Trypanosoma brucei La protein affects accumulation of elongator methionyl-tRNA.
Molecular and biochemical parasitology 2005;144(1):104-8.
2005: Elisabetta Ullu; Hugo D Lujan; Christian Tschudi
Small sense and antisense RNAs derived from a telomeric retroposon family in Giardia intestinalis.
Eukaryotic cell 2005;4(6):1155-7.
2004: Huafang Shi; Nathalie Chamond; Christian Tschudi; Elisabetta Ullu
Selection and characterization of RNA interference-deficient trypanosomes impaired in target mRNA degradation.
Eukaryotic cell 2004;3(6):1445-53.
2004: Huafang Shi; Elisabetta Ullu; Christian Tschudi
Function of the Trypanosome Argonaute 1 protein in RNA interference requires the N-terminal RGG domain and arginine 735 in the Piwi domain.
The Journal of biological chemistry 2004;279(48):49889-93.
2004: Jia-Peng Ruan; George K Arhin; Elisabetta Ullu; Christian Tschudi
Functional characterization of a Trypanosoma brucei TATA-binding protein-related factor points to a universal regulator of transcription in trypanosomes.
Molecular and cellular biology 2004;24(21):9610-8.
2004: George K Arhin; Shuiyuan Shen; Henriette Irmer; Elisabetta Ullu; Christian Tschudi
Role of a 300-kilodalton nuclear complex in the maturation of Trypanosoma brucei initiator methionyl-tRNA.
Eukaryotic cell 2004;3(4):893-9.
2004: Elisabetta Ullu; Christian Tschudi; Tirtha Chakraborty
RNA interference in protozoan parasites.
Cellular microbiology 2004;6(6):509-19.
2004: Cynthia Y He; Helen H Ho; Jörg Malsam; Cécile Chalouni; Christopher M West; Elisabetta Ullu; Derek Toomre; Graham Warren
Golgi duplication in Trypanosoma brucei.
The Journal of cell biology 2004;165(3):313-21.
2004: Appolinaire Djikeng; Shuiyuan Shen; Christian Tschudi; Elisabetta Ullu
Analysis of gene function in Trypanosoma brucei using RNA interference.
Methods in molecular biology (Clifton, N.J.) 2004;270():287-98.
2004: George K Arhin; Shuiyuan Shen; Elisabetta Ullu; Christian Tschudi
A PCR-based method for gene deletion and protein tagging in Trypanosoma brucei.
Methods in molecular biology (Clifton, N.J.) 2004;270():277-86.
2004: Appolinaire Djikeng; Shuiyuan Shen; Christian Tschudi; Elisabetta Ullu
Analysis of gene function in Trypanosoma brucei using RNA interference.
Methods in molecular biology (Clifton, N.J.) 2004;265():73-83.
2004: Huafang Shi; Appolinaire Djikeng; Christian Tschudi; Elisabetta Ullu
Argonaute protein in the early divergent eukaryote Trypanosoma brucei: control of small interfering RNA accumulation and retroposon transcript abundance.
Molecular and cellular biology 2004;24(1):420-7.
2003: Christian Tschudi; Appolinaire Djikeng; Huafang Shi; Elisabetta Ullu
In vivo analysis of the RNA interference mechanism in Trypanosoma brucei.
Methods (San Diego, Calif.) 2003;30(4):304-12.
2003: Appolinaire Djikeng; Huafang Shi; Christian Tschudi; Shuiyuan Shen; Elisabetta Ullu
An siRNA ribonucleoprotein is found associated with polyribosomes in Trypanosoma brucei.
RNA (New York, N.Y.) 2003;9(7):802-8.
2002: Li Liu; Xuehai Liang; Shai Uliel; Ron Unger; Elisabetta Ullu; Shulamit Michaeli
RNA interference of signal peptide-binding protein SRP54 elicits deleterious effects and protein sorting defects in trypanosomes.
The Journal of biological chemistry 2002;277(49):47348-57.
2002: Michal Mandelboim; Carlos Lopez Estraño; Christian Tschudi; Elisabetta Ullu; Shulamit Michaeli
On the role of exon and intron sequences in trans-splicing utilization and cap 4 modification of the trypanosomatid Leptomonas collosoma SL RNA.
The Journal of biological chemistry 2002;277(38):35210-8.
2002: Huafang Shi; Steven Wormsley; Christian Tschudi; Elisabetta Ullu
Efficient transposition of preformed synaptic Tn5 complexes in Trypanosoma brucei.
Molecular and biochemical parasitology 2002;121(1):141-4.
2002: Elisabetta Ullu; Appolinaire Djikeng; Huafang Shi; Christian Tschudi
RNA interference: advances and questions.
Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2002;357(1417):65-70.
2001: Appolinaire Djikeng; Huafang Shi; Christian Tschudi; Elisabetta Ullu
RNA interference in Trypanosoma brucei: cloning of small interfering RNAs provides evidence for retroposon-derived 24-26-nucleotide RNAs.
RNA (New York, N.Y.) 2001;7(11):1522-30.
2001: Stepánka Vanácová; Jan Tachezy; Elisabetta Ullu; Christian Tschudi
Unusual diversity in alpha-amanitin sensitivity of RNA polymerases in trichomonads.
Molecular and biochemical parasitology 2001;115(2):239-47.
2001: Shuiyuan Shen; George K Arhin; Elisabetta Ullu; Christian Tschudi
In vivo epitope tagging of Trypanosoma brucei genes using a one step PCR-based strategy.
Molecular and biochemical parasitology 2001;113(1):171-3.
2001: Appolinaire Djikeng; L Ferreira; M D'Angelo; P Dolezal; T Lamb; S Murta; V Triggs; S Ulbert; A Villarino; S Renzi; Elisabetta Ullu; Christian Tschudi
Characterization of a candidate Trypanosoma brucei U1 small nuclear RNA gene.
Molecular and biochemical parasitology 2001;113(1):109-15.
2000: Arthur Günzl; Albrecht Bindereif; Elisabetta Ullu; Christian Tschudi
Determinants for cap trimethylation of the U2 small nuclear RNA are not conserved between Trypanosoma brucei and higher eukaryotic organisms.
Nucleic acids research 2000;28(19):3702-9.
2000: G Mair; Elisabetta Ullu; Christian Tschudi
Cotranscriptional cap 4 formation on the Trypanosoma brucei spliced leader RNA.
The Journal of biological chemistry 2000;275(37):28994-9.
2000: Huafang Shi; Appolinaire Djikeng; T Mark; E Wirtz; Christian Tschudi; Elisabetta Ullu
Genetic interference in Trypanosoma brucei by heritable and inducible double-stranded RNA.
RNA (New York, N.Y.) 2000;6(7):1069-76.
2000: M A Marchetti; Christian Tschudi; H Kwon; Sandra L Wolin; Elisabetta Ullu
Import of proteins into the trypanosome nucleus and their distribution at karyokinesis.
Journal of cell science 2000;113 ( Pt 5)():899-906.
2000: G Mair; Huafang Shi; Hongjie Li; Appolinaire Djikeng; H O Aviles; Joseph Bishop; Franco Falcone; L Cristina Gavrilescu; J L Montgomery; Maria Isabel Santori; L S Stern; Zefeng Wang; Elisabetta Ullu; Christian Tschudi
A new twist in trypanosome RNA metabolism: cis-splicing of pre-mRNA.
RNA (New York, N.Y.) 2000;6(2):163-9.
1998: Huân M Ngô; Christian Tschudi; K Gull; Elisabetta Ullu
Double-stranded RNA induces mRNA degradation in Trypanosoma brucei.
Proceedings of the National Academy of Sciences of the United States of America 1998;95(25):14687-92.
1998: C Saginario; H Sterling; Cornelis Beckers; R Kobayashi; Michele Solimena; Elisabetta Ullu; Agnès Vignery
MFR, a putative receptor mediating the fusion of macrophages.
Molecular and cellular biology 1998;18(11):6213-23.
1998: M A Marchetti; Christian Tschudi; E Silva; Elisabetta Ullu
Physical and transcriptional analysis of the Trypanosoma brucei genome reveals a typical eukaryotic arrangement with close interspersionof RNA polymerase II- and III-transcribed genes.
Nucleic acids research 1998;26(15):3591-8.
1998: C López-Estraño; Christian Tschudi; Elisabetta Ullu
Exonic sequences in the 5' untranslated region of alpha-tubulin mRNA modulate trans splicing in Trypanosoma brucei.
Molecular and cellular biology 1998;18(8):4620-8.
1998: E Silva; Elisabetta Ullu; R Kobayashi; Christian Tschudi
Trypanosome capping enzymes display a novel two-domain structure.
Molecular and cellular biology 1998;18(8):4612-9.
1997: Valerian Nakaar; Arthur Günzl; Elisabetta Ullu; Christian Tschudi
Structure of the Trypanosoma brucei U6 snRNA gene promoter.
Molecular and biochemical parasitology 1997;88(1-2):13-23.
1997: Arthur Günzl; Elisabetta Ullu; M Dörner; S P Fragoso; K F Hoffmann; J D Milner; Y Morita; E K Nguu; S Vanacova; S Wünsch; A O Dare; H Kwon; Christian Tschudi
Transcription of the Trypanosoma brucei spliced leader RNA gene is dependent only on the presence of upstream regulatory elements.
Molecular and biochemical parasitology 1997;85(1):67-76.
1995: Elisabetta Ullu; Christian Tschudi
Accurate modification of the trypanosome spliced leader cap structure in a homologous cell-free system.
The Journal of biological chemistry 1995;270(35):20365-9.
1995: Arthur Günzl; Christian Tschudi; Valerian Nakaar; Elisabetta Ullu
Accurate transcription of the Trypanosoma brucei U2 small nuclear RNA gene in a homologous extract.
The Journal of biological chemistry 1995;270(29):17287-91.
1995: K A Harris; Donald M Crothers; Elisabetta Ullu
In vivo structural analysis of spliced leader RNAs in Trypanosoma brucei and Leptomonas collosoma: a flexible structure that is independent of cap4 methylations.
RNA (New York, N.Y.) 1995;1(4):351-62.
1994: Valerian Nakaar; A O Dare; D Hong; Elisabetta Ullu; Christian Tschudi
Upstream tRNA genes are essential for expression of small nuclear and cytoplasmic RNA genes in trypanosomes.
Molecular and cellular biology 1994;14(10):6736-42.
1994: Christian Tschudi; Elisabetta Ullu
Trypanosomatid protozoa provide paradigms of eukaryotic biology.
Infectious agents and disease 1994;3(4):181-6.
1994: Keith Matthews; Christian Tschudi; Elisabetta Ullu
A common pyrimidine-rich motif governs trans-splicing and polyadenylation of tubulin polycistronic pre-mRNA in trypanosomes.
Genes & development 1994;8(4):491-501.
1993: Elisabetta Ullu; Christian Tschudi
2'-O-methyl RNA oligonucleotides identify two functional elements in the trypanosome spliced leader ribonucleoprotein particle.
The Journal of biological chemistry 1993;268(18):13068-73.
1993: Elisabetta Ullu; Keith Matthews; Christian Tschudi
Temporal order of RNA-processing reactions in trypanosomes: rapid trans splicing precedes polyadenylation of newly synthesized tubulin transcripts.
Molecular and cellular biology 1993;13(1):720-5.
1991: Elisabetta Ullu; Christian Tschudi
Trans splicing in trypanosomes requires methylation of the 5' end of the spliced leader RNA.
Proceedings of the National Academy of Sciences of the United States of America 1991;88(22):10074-8.
1991: T Munoz-Antonia; F F Richards; Elisabetta Ullu
Differences in glucose transport between blood stream and procyclic forms of Trypanosoma brucei rhodesiense.
Molecular and biochemical parasitology 1991;47(1):73-81.
1990: Christian Tschudi; Simon P Williams; Elisabetta Ullu
Conserved sequences in the U2 snRNA-encoding genes of Kinetoplastida do not include the putative branchpoint recognition region.
Gene 1990;91(1):71-7.
1990: Elisabetta Ullu; Christian Tschudi
Permeable trypanosome cells as a model system for transcription and trans-splicing.
Nucleic acids research 1990;18(11):3319-26.
1990: Christian Tschudi; Elisabetta Ullu
Destruction of U2, U4, or U6 small nuclear RNA blocks trans splicing in trypanosome cells.
Cell 1990;61(3):459-66.
1989: Jeffrey Radding; M Y Armstrong; Elisabetta Ullu; F F Richards
Identification and isolation of a major cell surface glycoprotein of Pneumocystis carinii.
Infection and immunity 1989;57(7):2149-57.
1989: Jay A Fishman; Elisabetta Ullu; M Y Armstrong; F F Richards
Organization of DNA and RNA from rat Pneumocystis carinii.
The Journal of protozoology 1989;36(1):4S-5S.
1988: Christian Tschudi; A R Krainer; Elisabetta Ullu
The U6 small nuclear RNA from Trypanosoma brucei.
Nucleic acids research 1988;16(23):11375.
1988: Christian Tschudi; Elisabetta Ullu
Polygene transcripts are precursors to calmodulin mRNAs in trypanosomes.
The EMBO journal 1988;7(2):455-63.
1986: Christian Tschudi; F F Richards; Elisabetta Ullu
The U2 RNA analogue of Trypanosoma brucei gambiense: implications for a splicing mechanism in trypanosomes.
Nucleic acids research 1986;14(22):8893-903.
1984: Elisabetta Ullu; Christian Tschudi
Alu sequences are processed 7SL RNA genes.
Nature 1984;312(5990):171-2.