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Towards the physical map of the Trypanosoma cruzi nuclear genome: construction of YAC and BAC libraries of the reference clone T. cruzi CL-Brener. 1997

I Ferrari, and H Lorenzi, and M R Santos, and S Brandariz, and J M Requena, and A Schijman, and M Vázquez, and J F da Silveira, and C Ben-Dov, and C Medrano, and S Ghío, and P López Bergami, and I Cano, and B Zingales, and T P Urmenyi, and E Rondinelli, and A González, and A Cortes, and M C Lopez, and M C Thomas, and C Alonso, and J L Ramírez, and M A Chiurrillo, and R R Aldao, and M J Levin
Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (INGEBI, CONICET, FCYEN-UBA), Buenos Aires, Argentina.

Strategies to construct the physical map of the Trypanosoma cruzi nuclear genome have to capitalize on three main advantages of the parasite genome, namely (a) its small size, (b) the fact that all chromosomes can be defined, and many of them can be isolated by pulse field gel electrophoresis, and (c) the fact that simple Southern blots of electrophoretic karyotypes can be used to map sequence tagged sites and expressed sequence tags to chromosomal bands. A major drawback to cope with is the complexity of T. cruzi genetics, that hinders the construction of a comprehensive genetic map. As a first step towards physical mapping, we report the construction and partial characterization of a T. cruzi CL-Brener genomic library in yeast artificial chromosomes (YACs) that consists of 2,770 individual YACs with a mean insert size of 365 kb encompassing around 10 genomic equivalents. Two libraries in bacterial artificial chromosomes (BACs) have been constructed, BACI and BACII. Both libraries represent about three genome equivalents. A third BAC library (BAC III) is being constructed. YACs and BACs are invaluable tools for physical mapping. More generally, they have to be considered as a common resource for research in Chagas disease.

UI MeSH Term Description Entries
D002874 Chromosome Mapping Any method used for determining the location of and relative distances between genes on a chromosome. Gene Mapping,Linkage Mapping,Genome Mapping,Chromosome Mappings,Gene Mappings,Genome Mappings,Linkage Mappings,Mapping, Chromosome,Mapping, Gene,Mapping, Genome,Mapping, Linkage,Mappings, Chromosome,Mappings, Gene,Mappings, Genome,Mappings, Linkage
D002876 Chromosomes, Bacterial Structures within the nucleus of bacterial cells consisting of or containing DNA, which carry genetic information essential to the cell. Bacterial Chromosome,Bacterial Chromosomes,Chromosome, Bacterial
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014349 Trypanosoma cruzi The agent of South American trypanosomiasis or CHAGAS DISEASE. Its vertebrate hosts are man and various domestic and wild animals. Insects of several species are vectors. Trypanosoma cruzus,cruzi, Trypanosoma
D015698 Genomic Library A form of GENE LIBRARY containing the complete DNA sequences present in the genome of a given organism. It contrasts with a cDNA library which contains only sequences utilized in protein coding (lacking introns). Genome Library,Genome Libraries,Genomic Libraries,Libraries, Genome,Libraries, Genomic,Library, Genome,Library, Genomic
D018244 Chromosomes, Artificial, Yeast Chromosomes in which fragments of exogenous DNA ranging in length up to several hundred kilobase pairs have been cloned into yeast through ligation to vector sequences. These artificial chromosomes are used extensively in molecular biology for the construction of comprehensive genomic libraries of higher organisms. Artificial Chromosomes, Yeast,Yeast Artificial Chromosomes,Chromosomes, Yeast Artificial,YAC (Chromosome),YACs (Chromosomes),Artificial Chromosome, Yeast,Chromosome, Yeast Artificial,Yeast Artificial Chromosome
D018503 Genome, Protozoan The complete genetic complement contained in a set of CHROMOSOMES in a protozoan. Protozoan Genome,Genomes, Protozoan,Protozoan Genomes
D019976 Cloning, Organism The formation of one or more genetically identical organisms derived by vegetative reproduction from a single cell. The source nuclear material can be embryo-derived, fetus-derived, or taken from an adult somatic cell. Cloning, Embryo,Cloning, Human,Embryo Cloning,Human Cloning,Cloning,Clonings, Embryo,Clonings, Human,Clonings, Organism,Embryo Clonings,Human Clonings,Organism Cloning,Organism Clonings

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