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Gene discovery through expressed sequence Tag sequencing in Trypanosoma cruzi.


ABSTRACT: Analysis of expressed sequence tags (ESTs) constitutes a useful approach for gene identification that, in the case of human pathogens, might result in the identification of new targets for chemotherapy and vaccine development. As part of the Trypanosoma cruzi genome project, we have partially sequenced the 5' ends of 1, 949 clones to generate ESTs. The clones were randomly selected from a normalized CL Brener epimastigote cDNA library. A total of 14.6% of the clones were homologous to previously identified T. cruzi genes, while 18.4% had significant matches to genes from other organisms in the database. A total of 67% of the ESTs had no matches in the database, and thus, some of them might be T. cruzi-specific genes. Functional groups of those sequences with matches in the database were constructed according to their putative biological functions. The two largest categories were protein synthesis (23.3%) and cell surface molecules (10.8%). The information reported in this paper should be useful for researchers in the field to analyze genes and proteins of their own interest.

SUBMITTER: Verdun RE 

PROVIDER: S-EPMC108675 | biostudies-literature | 1998 Nov

REPOSITORIES: biostudies-literature

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Gene discovery through expressed sequence Tag sequencing in Trypanosoma cruzi.

Verdun R E RE   Di Paolo N N   Urmenyi T P TP   Rondinelli E E   Frasch A C AC   Sanchez D O DO  

Infection and immunity 19981101 11


Analysis of expressed sequence tags (ESTs) constitutes a useful approach for gene identification that, in the case of human pathogens, might result in the identification of new targets for chemotherapy and vaccine development. As part of the Trypanosoma cruzi genome project, we have partially sequenced the 5' ends of 1, 949 clones to generate ESTs. The clones were randomly selected from a normalized CL Brener epimastigote cDNA library. A total of 14.6% of the clones were homologous to previously  ...[more]

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