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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Unexpected complexity of the Aquaporin gene family in the moss Physcomitrella patens | BMC Plant Biology BioMed Central Research article Open Access Unexpected complexity of the Aquaporin gene family in the moss Physcomitrella patens Jonas ẢH Danielson and Urban Johanson Address Department of Biochemistry Center for Molecular Protein Science Center for Chemistry and Chemical Engineering Lund University PO Box 124 S-221 00 Lund Sweden Email Jonas ẢH Danielson - jonas.danielson@biochemistry.lu.se Urban Johanson - urban.johanson@biochemistry.lu.se Corresponding author Published 22 April 2008 Received 20 December 2007 BMC Plant Biology 2008 8 45 doi 10.1186 1471-2229-8-45 Accepted 22 April 2008 This article is available from http www.biomedcentral.cOm 1471-2229 8 45 2008 Danielson and Johanson licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Aquaporins also called major intrinsic proteins MIPs constitute an ancient superfamily of channel proteins that facilitate the transport of water and small solutes across cell membranes. MIPs are found in almost all living organisms and are particularly abundant in plants where they form a divergent group of proteins able to transport a wide selection of substrates. Results Analyses of the whole genome of Physcomitrella patens resulted in the identification of 23 MIPs belonging to seven different subfamilies of which only five have been previously described. Of the newly discovered subfamilies one was only identified in P. patens Hybrid Intrinsic Protein HIP whereas the other was found to be present in a wide variety of dicotyledonous plants and forms a major previously unrecognized MIP subfamily X Intrinsic Proteins XIPs . Surprisingly also some specific groups within subfamilies present in Arabidopsis thaliana and Zea mays could be identified in P. .