title: [The study of inter-simple sequences repeat genotyping based on one pentanucleotide repeat sequences in mycobacteria].
abstract: OBJECTIVE
  To establish inter-simple sequences repeat (ISSR) molecular makers based on (CAGCG)n repeat sequence in mycobacteria.
  
  
  METHODS
  The distribution of pentanucleotide repeat sequence (CAGCG)n in mycobacterial genomes was analyzed by MICdb 2.0 software in the microsatellite database. ISSR primer MISP6 based on (CAGCG)n sequences was designed and tested in mycobacterial strains, which included 17 mycobacterial strains and 41 Mycobacterium tuberculosis clinical strains.
  
  
  RESULTS
  The abundances of pentanucleotide repeat sequences (CAGCG)n were high in most of the mycobacterial genomes and they were mainly located in the coding regions. The results of ISSR analysis in mycobacteria showed that 15 reference strains from mycobacteria were clustered into 2 major clusters. The first cluster contained 2 subtypes and the second cluster contained 4 subtypes. Forty-one clinical strains from Mycobacterium tuberculosis were divided into 2 major clusters by the analysis of MISP6 primer, and each cluster had 2 subtypes.
  
  
  CONCLUSIONS
  ISSR primer MISP6 based on (CAGCG)n sequences can be used as a genetic marker to genotype mycobacterial strains.
authors.affiliation: School of Biology and Basic Medical Sciences Soochow University, Suzhou 215123, China.
authors.forename: Shi-hui
authors.initials: SH
authors.lastname: Gao
authors.forename: Zhong-yi
authors.initials: ZY
authors.lastname: Hu
authors.forename: Ying-wei
authors.initials: YW
authors.lastname: Zhao
authors.forename: Lian-hua
authors.initials: LH
authors.lastname: Qin
mesh_terms: D015373:Bacterial Typing Techniques; D017931:DNA Primers / Q000235:genetics; D004269:DNA, Bacterial / Q000235:genetics; D005819:Genetic Markers; D016680:Genome, Bacterial; D005838:Genotype; D009161:Mycobacterium / Q000145:classification / Q000235:genetics*; D012091:Repetitive Sequences, Nucleic Acid
chemical_list: D017931:DNA Primers; D004269:DNA, Bacterial; D005819:Genetic Markers