<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kouprina, Natalay</style></author><author><style face="normal" font="default" size="100%">Noskov, Vladimir N</style></author><author><style face="normal" font="default" size="100%">Pavlicek, Adam</style></author><author><style face="normal" font="default" size="100%">Collins, N Keith</style></author><author><style face="normal" font="default" size="100%">Schoppee Bortz, Pamela D</style></author><author><style face="normal" font="default" size="100%">Ottolenghi, Chris</style></author><author><style face="normal" font="default" size="100%">Loukinov, Dmitri</style></author><author><style face="normal" font="default" size="100%">Goldsmith, Paul</style></author><author><style face="normal" font="default" size="100%">Risinger, John I</style></author><author><style face="normal" font="default" size="100%">Kim, Jung-Hyun</style></author><author><style face="normal" font="default" size="100%">Westbrook, V Anne</style></author><author><style face="normal" font="default" size="100%">Solomon, Gregory</style></author><author><style face="normal" font="default" size="100%">Sounders, Hanna</style></author><author><style face="normal" font="default" size="100%">Herr, John C</style></author><author><style face="normal" font="default" size="100%">Jurka, Jerzy</style></author><author><style face="normal" font="default" size="100%">Lobanenkov, Victor</style></author><author><style face="normal" font="default" size="100%">Schlessinger, David</style></author><author><style face="normal" font="default" size="100%">Larionov, Vladimir</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evolutionary diversification of SPANX-N sperm protein gene structure and expression.</style></title><secondary-title><style face="normal" font="default" size="100%">PLoS One</style></secondary-title><alt-title><style face="normal" font="default" size="100%">PLoS ONE</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Amino Acid Sequence</style></keyword><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Antibody Specificity</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Line, Tumor</style></keyword><keyword><style  face="normal" font="default" size="100%">Chromosomes, Human, X</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrophoretic Mobility Shift Assay</style></keyword><keyword><style  face="normal" font="default" size="100%">Evolution, Molecular</style></keyword><keyword><style  face="normal" font="default" size="100%">Fluorescent Antibody Technique</style></keyword><keyword><style  face="normal" font="default" size="100%">Fluorescent Antibody Technique, Indirect</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Molecular Sequence Data</style></keyword><keyword><style  face="normal" font="default" size="100%">Nuclear Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Promoter Regions, Genetic</style></keyword><keyword><style  face="normal" font="default" size="100%">Recombinant Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Reverse Transcriptase Polymerase Chain Reaction</style></keyword><keyword><style  face="normal" font="default" size="100%">Sequence Homology, Amino Acid</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2007</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">e359</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The sperm protein associated with nucleus in the X chromosome (SPANX) genes cluster at Xq27 in two subfamilies, SPANX-A/D and SPANX-N. SPANX-A/D is specific for hominoids and is fairly well characterized. The SPANX-N gave rise to SPANX-A/D in the hominoid lineage approximately 7 MYA. Given the proposed role of SPANX genes in spermatogenesis, we have extended studies to SPANX-N gene evolution, variation, regulation of expression, and intra-sperm localization. By immunofluorescence analysis, SPANX-N proteins are localized in post-meiotic spermatids exclusively, like SPANX-A/D. But in contrast to SPANX-A/D, SPANX-N are found in all ejaculated spermatozoa rather than only in a subpopulation, are localized in the acrosome rather than in the nuclear envelope, and are expressed at a low level in several nongametogenic adult tissues as well as many cancers. Presence of a binding site for CTCF and its testis-specific paralogue BORIS in the SPANX promoters suggests, by analogy to MAGE-A1 and NY-ESO-1, that their activation in spermatogenesis is mediated by the programmed replacement of CTCF by BORIS. Based on the relative density of CpG, the more extended expression of SPANX-N compared to SPANX-A/D in nongametogenic tissues is likely attributed to differences in promoter methylation. Our findings suggest that the recent duplication of SPANX genes in hominoids was accompanied by different localization of SPANX-N proteins in post-meiotic sperm and additional expression in several nongonadal tissues. This suggests a corresponding functional diversification of SPANX gene families in hominoids. SPANX proteins thus provide unique targets to investigate their roles in the function of spermatozoa, selected malignancies, and for SPANX-N, in other tissues as well.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><custom1><style face="normal" font="default" size="100%">&lt;p&gt;http://www.ncbi.nlm.nih.gov/pubmed/17406683?dopt=Abstract&lt;/p&gt;
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