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From: werner@aecom.YU.EDU (Craig Werner)
Newsgroups: sci.bio
Subject: Re: Dumb Questions about Mitochondria
Message-ID: <1273@aecom.YU.EDU>
Date: Mon, 17-Aug-87 00:46:00 EDT
Article-I.D.: aecom.1273
Posted: Mon Aug 17 00:46:00 1987
Date-Received: Thu, 20-Aug-87 05:08:38 EDT
References: <52@citcom.UUCP> <1910@sigi.Colorado.EDU>
Organization: Albert Einstein Coll. of Med., NY
Lines: 27
Summary: Atypical Eukaryotes

In article <1910@sigi.Colorado.EDU>, (Anthony Pelletier) writes:
> 
> But the simple answers:  All eukaryotes have mitochondria.  This includes
> any multicellular organism and alot of unicellular ones such as yeast and
> cilliates.  

	I, too, used to believe that all Eukaryotes have mitochondria. In
fact, Entamoeba species, including Entamoeba histolytica (which infects
10-20% of the world's human population) and Entamoeba coli (whose 
presence means that all first references to everyone's favorite
bacteria must be spelled out Escherichia coli to distinguish it from
this E. coli)  lack mitochondria.
	That's right Entamoeba are Eukaryotes that lack mitochondria.
Their nucleus qualifies them as bona fide Eukaryotes, and as soon
as he gets his act together, Neil Rothstein will be sequencing 
E. histolytica ribosomal RNA in order to place it in proper
perspective.
	There are also several strains of yeast that seem to do without
mitochondria very nicely.  

	Yes, the above is a nit-pick, but it's nature's fault, not mine.

-- 
	        Craig Werner   (future MD/PhD, 3 years down, 4 to go)
	     werner@aecom.YU.EDU -- Albert Einstein College of Medicine
              (1935-14E Eastchester Rd., Bronx NY 10461, 212-931-2517)
             "Versatility is no crime, but it is a source of adrenaline."