RT Journal A1 Frohme, Marcus A1 Camargo, Anamaria A. A1 Czink, Claudia A1 Matsukuma, Adriana Y. A1 Simpson, Andrew J.G. A1 Hoheisel, Jörg D. A1 Verjovski-Almeida, Sergio T1 Directed Gap Closure in Large-Scale Sequencing Projects JF Genome Research JO Genome Research YR 2001 FD May 01 VO 11 IS 5 SP 901 OP 903 DO 10.1101/gr.179401 UL http://genome.cshlp.org/content/11/5/901.abstract AB A problem in many sequencing projects is the final closure of gaps left in the clone libraries, which serve as templates for sequencing, because of uncloned or unclonable genomic areas. By use of theXylella fastidiosa genome as a test system, we present here an approach to generate, in a directed manner, sequence information from those gaps. We suggest using the complete clone library as a competitor against the genomic DNA of interest in a subtractive hybridization procedure similar to representational difference analysis (RDA). The resulting sequence information can be used to screen selectively other clone resources or serve directly for gap closure.