A physical map of the Myxococcus xanthus chromosome

Qian He, Hongwu Chen, Adam Kuspa, Yvonne Cheng, Dale Kaiser, Lawrence J. Shimkets

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

A physical map of the 9.2-Mbp Myxococcus xanthus DK1622 chromosome at a resolution of 25 kbp was constructed by using a strategy that is applicable to virtually all microorganisms. Segments of the chromosome were used as hybridization probes to subdivide a yeast artificial chromosome (YAC) library into groups of linked clones. The clones were aligned by comparing their EcoRI restriction patterns. The groups of YAC clones ('contigs') were oriented and aligned with the genomic restriction map by means of common genetic and physical markers such as rare restriction sites and transposon insertions. Over 95% of the genome is represented by cloned DNA. Sixty genetic loci including >100 genes, many of which play a role in fruiting body development, have been mapped in this way. Additional genes can now be located on the chromosome map by hybridization of their sequences to the ordered set of YAC chromosomes. The mapped genetic loci account for ≃2% of the genome.

Original languageEnglish (US)
Pages (from-to)9584-9587
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Volume91
Issue number20
DOIs
StatePublished - Sep 27 1994

Keywords

  • contiguous clones
  • development
  • DNA
  • genome mapping
  • myxobacteria

ASJC Scopus subject areas

  • General

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