A novel family of P-loop NTPases with an unusual phyletic distribution and transmembrane segments inserted within the NTPase domain

L Aravind, Lakshminarayan M Iyer, Detlef D Leipe and Eugene V Koonin Address: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA. reviews Correspondence: L Aravind. E-mail: aravind@ncbi.nlm.nih.gov Published: 16 April 2004 Genome Biology 2004, 5:R30 The electronic version of this article is the complete one and can be found online at http://genomebiology.com/2004/5/5/R30 Received: 19 January 2004 Revised: 8 March 2004 Accepted: 11 March 2004 reports © 2004 Aravind et al.; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided...