@article{BuchbergerBoehm2013, author = {Buchberger, Alexander and B{\"o}hm, Stephanie}, title = {The Budding Yeast Cdc48Shp1 Complex Promotes Cell Cycle Progression by Positive Regulation of Protein Phosphatase 1 (Glc7)}, series = {PLoS One}, journal = {PLoS One}, doi = {10.1371/journal.pone.0056486}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-96073}, year = {2013}, abstract = {The conserved, ubiquitin-selective AAA ATPase Cdc48 regulates numerous cellular processes including protein quality control, DNA repair and the cell cycle. Cdc48 function is tightly controlled by a multitude of cofactors mediating substrate specificity and processing. The UBX domain protein Shp1 is a bona fide substrate-recruiting cofactor of Cdc48 in the budding yeast S. cerevisiae. Even though Shp1 has been proposed to be a positive regulator of Glc7, the catalytic subunit of protein phosphatase 1 in S. cerevisiae, its cellular functions in complex with Cdc48 remain largely unknown. Here we show that deletion of the SHP1 gene results in severe growth defects and a cell cycle delay at the metaphase to anaphase transition caused by reduced Glc7 activity. Using an engineered Cdc48 binding-deficient variant of Shp1, we establish the Cdc48Shp1 complex as a critical regulator of mitotic Glc7 activity. We demonstrate that shp1 mutants possess a perturbed balance of Glc7 phosphatase and Ipl1 (Aurora B) kinase activities and show that hyper-phosphorylation of the kinetochore protein Dam1, a key mitotic substrate of Glc7 and Ipl1, is a critical defect in shp1. We also show for the first time a physical interaction between Glc7 and Shp1 in vivo. Whereas loss of Shp1 does not significantly affect Glc7 protein levels or localization, it causes reduced binding of the activator protein Glc8 to Glc7. Our data suggest that the Cdc48Shp1 complex controls Glc7 activity by regulating its interaction with Glc8 and possibly further regulatory subunits.}, language = {en} } @article{AntoniouKuchenbaeckerSoucyetal.2012, author = {Antoniou, Antonis C. and Kuchenbaecker, Karoline B. and Soucy, Penny and Beesley, Jonathan and Chen, Xiaoqing and McGuffog, Lesley and Lee, Andrew and Barrowdale, Daniel and Healey, Sue and Sinilnikova, Olga M. and Caligo, Maria A. and Loman, Niklas and Harbst, Katja and Lindblom, Annika and Arver, Brita and Rosenquist, Richard and Karlsson, Per and Nathanson, Kate and Domchek, Susan and Rebbeck, Tim and Jakubowska, Anna and Lubinski, Jan and Jaworska, Katarzyna and Durda, Katarzyna and Zlowowcka-Perłowska, Elżbieta and Osorio, Ana and Dur{\´a}n, Mercedes and Andr{\´e}s, Raquel and Ben{\´i}tez, Javier and Hamann, Ute and Hogervorst, Frans B. and van Os, Theo A. and Verhoef, Senno and Meijers-Heijboer, Hanne E. J. and Wijnen, Juul and Garcia, Encarna B. G{\´o}mez and Ligtenberg, Marjolijn J. and Kriege, Mieke and Coll{\´e}e, Margriet and Ausems, Margreet G. E. M. and Oosterwijk, Jan C. and Peock, Susan and Frost, Debra and Ellis, Steve D. and Platte, Radka and Fineberg, Elena and Evans, D. Gareth and Lalloo, Fiona and Jacobs, Chris and Eeles, Ros and Adlard, Julian and Davidson, Rosemarie and Cole, Trevor and Cook, Jackie and Paterson, Joan and Douglas, Fiona and Brewer, Carole and Hodgson, Shirley and Morrison, Patrick J. and Walker, Lisa and Rogers, Mark T. and Donaldson, Alan and Dorkins, Huw and Godwin, Andrew K. and Bove, Betsy and Stoppa-Lyonnet, Dominique and Houdayer, Claude and Buecher, Bruno and de Pauw, Antoine and Mazoyer, Sylvie and Calender, Alain and L{\´e}on{\´e}, M{\´e}lanie and Bressac-de Paillerets, Brigitte and Caron, Olivier and Sobol, Hagay and Frenay, Marc and Prieur, Fabienne and Ferrer, Sandra Fert and Mortemousque, Isabelle and Buys, Saundra and Daly, Mary and Miron, Alexander and Terry, Mary Beth and Hopper, John L. and John, Esther M. and Southey, Melissa and Goldgar, David and Singer, Christian F. and Fink-Retter, Anneliese and Muy-Kheng, Tea and Geschwantler Kaulich, Daphne and Hansen, Thomas V. O. and Nielsen, Finn C. and Barkardottir, Rosa B. and Gaudet, Mia and Kirchhoff, Tomas and Joseph, Vijai and Dutra-Clarke, Ana and Offit, Kenneth and Piedmonte, Marion and Kirk, Judy and Cohn, David and Hurteau, Jean and Byron, John and Fiorica, James and Toland, Amanda E. and Montagna, Marco and Oliani, Cristina and Imyanitov, Evgeny and Isaacs, Claudine and Tihomirova, Laima and Blanco, Ignacio and Lazaro, Conxi and Teul{\´e}, Alex and Del Valle, J. and Gayther, Simon A. and Odunsi, Kunle and Gross, Jenny and Karlan, Beth Y. and Olah, Edith and Teo, Soo-Hwang and Ganz, Patricia A. and Beattie, Mary S. and Dorfling, Cecelia M. and Jansen van Rensburg, Elizabeth and Diez, Orland and Kwong, Ava and Schmutzler, Rita K. and Wappenschmidt, Barbara and Engel, Christoph and Meindl, Alfons and Ditsch, Nina and Arnold, Norbert and Heidemann, Simone and Niederacher, Dieter and Preisler-Adams, Sabine and Gadzicki, Dorothea and Varon-Mateeva, Raymonda and Deissler, Helmut and Gehrig, Andrea and Sutter, Christian and Kast, Karin and Fiebig, Britta and Sch{\"a}fer, Dieter and Caldes, Trinidad and de la Hoya, Miguel and Nevanlinna, Heli and Muranen, Taru A. and Lesp{\´e}rance, Bernard and Spurdle, Amanda B. and Neuhausen, Susan L. and Ding, Yuan C. and Wang, Xianshu and Fredericksen, Zachary and Pankratz, Vernon S. and Lindor, Noralane M. and Peterlongo, Paulo and Manoukian, Siranoush and Peissel, Bernard and Zaffaroni, Daniela and Bonanni, Bernardo and Bernard, Loris and Dolcetti, Riccardo and Papi, Laura and Ottini, Laura and Radice, Paolo and Greene, Mark H. and Loud, Jennifer T. and Andrulis, Irene L. and Ozcelik, Hilmi and Mulligan, Anna Marie and Glendon, Gord and Thomassen, Mads and Gerdes, Anne-Marie and Jensen, Uffe B. and Skytte, Anne-Bine and Kruse, Torben A. and Chenevix-Trench, Georgia and Couch, Fergus J. and Simard, Jacques and Easton, Douglas F.}, title = {Common variants at 12p11, 12q24, 9p21, 9q31.2 and in ZNF365 are associated with breast cancer risk for BRCA1 and/or BRCA2 mutation carriers}, series = {Breast Cancer Research}, volume = {14}, journal = {Breast Cancer Research}, number = {R33}, organization = {CIMBA; SWE-BRCA; HEBON; EMBRACE; GEMO Study Collaborators; kConFab Investigators}, doi = {10.1186/bcr3121}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-130449}, year = {2012}, abstract = {Introduction: Several common alleles have been shown to be associated with breast and/or ovarian cancer risk for BRCA1 and BRCA2 mutation carriers. Recent genome-wide association studies of breast cancer have identified eight additional breast cancer susceptibility loci: rs1011970 (9p21, CDKN2A/B), rs10995190 (ZNF365), rs704010 (ZMIZ1), rs2380205 (10p15), rs614367 (11q13), rs1292011 (12q24), rs10771399 (12p11 near PTHLH) and rs865686 (9q31.2). Methods: To evaluate whether these single nucleotide polymorphisms (SNPs) are associated with breast cancer risk for BRCA1 and BRCA2 carriers, we genotyped these SNPs in 12,599 BRCA1 and 7,132 BRCA2 mutation carriers and analysed the associations with breast cancer risk within a retrospective likelihood framework. Results: Only SNP rs10771399 near PTHLH was associated with breast cancer risk for BRCA1 mutation carriers (per-allele hazard ratio (HR) = 0.87, 95\% CI: 0.81 to 0.94, P-trend = 3 x 10\(^{-4}\)). The association was restricted to mutations proven or predicted to lead to absence of protein expression (HR = 0.82, 95\% CI: 0.74 to 0.90, P-trend = 3.1 x 10\(^{-5}\), P-difference = 0.03). Four SNPs were associated with the risk of breast cancer for BRCA2 mutation carriers: rs10995190, P-trend = 0.015; rs1011970, P-trend = 0.048; rs865686, 2df P = 0.007; rs1292011 2df P = 0.03. rs10771399 (PTHLH) was predominantly associated with estrogen receptor (ER)-negative breast cancer for BRCA1 mutation carriers (HR = 0.81, 95\% CI: 0.74 to 0.90, P-trend = 4 x 10\(^{-5}\)) and there was marginal evidence of association with ER- negative breast cancer for BRCA2 mutation carriers (HR = 0.78, 95\% CI: 0.62 to 1.00, P-trend = 0.049). Conclusions: The present findings, in combination with previously identified modifiers of risk, will ultimately lead to more accurate risk prediction and an improved understanding of the disease etiology in BRCA1 and BRCA2 mutation carriers.}, language = {en} }