Q: Gram +/- and bacterial systematics

Henrik Nielsen hnielsen at rna
Tue Aug 30 04:15:04 EST 1994


I need to classify some sequence entries from databases into
Gram-positive (single-membraned, such as B.subtilis) and Gram-negative
(double-membraned, such as E.coli) bacteria.  SWISSPROT, however, does
not use those terms in the classification, instead it divides
PROKARYOTA into FIRMICUTES, GRACILICUTES (including ANOXYPHOTOBACTERIA,
OXYPHOTOBACTERIA, and SCOTOBACTERIA), MENDOSICUTES (= ARCHAEBACTERIA),
and TENERICUTES (= MYCOPLASMA).  Do these groups relate to the Gram +/-
concept, and if so, how?

Would it e.g. be safe to say that FIRMICUTES = Gram+ and GRACILICUTES
(or maybe SCOTOBACTERIA) = Gram- ???

Answers will be greatly appreciated.
--

Henrik Nielsen

Center for Biological Sequence Analysis (CBS)
Department of Physical Chemistry (FKI)
The Technical University of Denmark (DTU)
Building 206
DK-2800 Lyngby, Denmark

phone: +45 4288 2222 ext. 2470 (operator)
phone: +45 4593 1222 ext. 2470 (tone)
  fax: +45 4593 4808
e-mail: hnielsen at cbs.dth.dk



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