S
Stephen J. O'Brien
Researcher at Saint Petersburg State University of Information Technologies, Mechanics and Optics
Publications - 1074
Citations - 98793
Stephen J. O'Brien is an academic researcher from Saint Petersburg State University of Information Technologies, Mechanics and Optics. The author has contributed to research in topics: Population & Gene. The author has an hindex of 153, co-authored 1062 publications receiving 93025 citations. Previous affiliations of Stephen J. O'Brien include University College Cork & QIMR Berghofer Medical Research Institute.
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Journal ArticleDOI
Genetic Restriction of HIV-1 Infection and Progression to AIDS by a Deletion Allele of the CKR5 Structural Gene
Michael Dean,Mary Carrington,Cheryl A. Winkler,Gavin A. Huttley,Michael W. Smith,Rando Allikmets,James J. Goedert,Susan Buchbinder,Eric Vittinghoff,Edward D. Gomperts,Sharyne Donfield,David Vlahov,Richard A. Kaslow,Alfred J. Saah,Charles R. Rinaldo,Roger Detels,Stephen J. O'Brien +16 more
TL;DR: The CKR5Δ32 deletion may act as a recessive restriction gene against HIV-1 infection and may exert a dominant phenotype of delaying progression to AIDS among infected individuals.
Journal ArticleDOI
Whole-genome analyses resolve early branches in the tree of life of modern birds
Erich D. Jarvis,Siavash Mirarab,Andre J. Aberer,Bo Li,Bo Li,Bo Li,Peter Houde,Cai Li,Cai Li,Simon Y. W. Ho,Brant C. Faircloth,Benoit Nabholz,Jason T. Howard,Alexander Suh,Claudia C. Weber,Rute R. da Fonseca,Jianwen Li,Fang Zhang Zhang,Hui Li,Long Zhou,Nitish Narula,Nitish Narula,Liang Liu,Ganesh Ganapathy,Bastien Boussau,Shamsuzzoha Bayzid,Volodymyr Zavidovych,Sankar Subramanian,Toni Gabaldón,Salvador Capella-Gutierrez,Jaime Huerta-Cepas,Bhanu Rekepalli,Bhanu Rekepalli,Kasper Munch,Mikkel H. Schierup,Bent E. K. Lindow,Wesley C. Warren,David A. Ray,Richard E. Green,Michael William Bruford,Xiangjiang Zhan,Xiangjiang Zhan,Andrew Dixon,Shengbin Li,Ning Li,Yinhua Huang,Elizabeth P. Derryberry,Elizabeth P. Derryberry,Mads F. Bertelsen,Frederick H. Sheldon,Robb T. Brumfield,Claudio V. Mello,Claudio V. Mello,Peter V. Lovell,Morgan Wirthlin,Maria Paula Cruz Schneider,Francisco Prosdocimi,José Alfredo Samaniego,Amhed Missael Vargas Velazquez,Alonzo Alfaro-Núñez,Paula F. Campos,Bent O. Petersen,Thomas Sicheritz-Pontén,An Pas,Thomas L. Bailey,R. Paul Scofield,Michael Bunce,David M. Lambert,Qi Zhou,Polina L. Perelman,Amy C. Driskell,Beth Shapiro,Zijun Xiong,Yongli Zeng,Shiping Liu,Zhenyu Li,Binghang Liu,Kui Wu,Jin Xiao,Xiong Yinqi,Quiemei Zheng,Yong Zhang,Huanming Yang,Jian Wang,Linnéa Smeds,Frank E. Rheindt,Michael J. Braun,Jon Fjeldså,Ludovic Orlando,F. Keith Barker,Knud A. Jønsson,Warren E. Johnson,Klaus-Peter Koepfli,Stephen J. O'Brien,David Haussler,Oliver A. Ryder,Carsten Rahbek,Eske Willerslev,Gary R. Graves,Gary R. Graves,Travis C. Glenn,John E. McCormack,Dave Burt,Hans Ellegren,Per Alström,Scott V. Edwards,Alexandros Stamatakis,David P. Mindell,Joel Cracraft,Edward L. Braun,Tandy Warnow,Tandy Warnow,Wang Jun,M. Thomas P. Gilbert,M. Thomas P. Gilbert,Guojie Zhang,Guojie Zhang +116 more
TL;DR: A genome-scale phylogenetic analysis of 48 species representing all orders of Neoaves recovered a highly resolved tree that confirms previously controversial sister or close relationships and identifies the first divergence in Neoaves, two groups the authors named Passerea and Columbea.
Journal ArticleDOI
Molecular phylogenetics and the origins of placental mammals
William J. Murphy,Eduardo Eizirik,Eduardo Eizirik,Warren E. Johnson,Ya-Ping Zhang,Oliver A. Ryder,Stephen J. O'Brien +6 more
TL;DR: The potential weaknesses of limited character and taxon sampling are addressed in a comprehensive molecular phylogenetic analysis of 64 species sampled across all extant orders of placental mammals, providing new insight into the pattern of the early placental mammal radiation.
Journal ArticleDOI
HLA and HIV-1: heterozygote advantage and B*35-Cw*04 disadvantage.
Mary Carrington,George W. Nelson,Maureen P. Martin,Teri Kissner,David Vlahov,James J. Goedert,Richard A. Kaslow,Susan Buchbinder,Keith Hoots,Stephen J. O'Brien +9 more
TL;DR: The extended survival of 28 to 40 percent of HIV-1-infected Caucasian patients who avoided AIDS for ten or more years can be attributed to their being fully heterozygous at HLA class I loci, to their lacking the AIDS-associated alleles B*35 and Cw*04, or to both.
Journal ArticleDOI
Resolution of the early placental mammal radiation using Bayesian phylogenetics
William J. Murphy,Eduardo Eizirik,Eduardo Eizirik,Stephen J. O'Brien,Ole Madsen,Mark Scally,Mark Scally,Christophe J. Douady,Christophe J. Douady,Emma C. Teeling,Emma C. Teeling,Oliver A. Ryder,Michael J. Stanhope,Michael J. Stanhope,Wilfried W. de Jong,Mark S. Springer +15 more
TL;DR: Crown-group Eutheria may have their most recent common ancestry in the Southern Hemisphere (Gondwana), and placental phylogeny is investigated using Bayesian and maximum-likelihood methods and a 16.4-kilobase molecular data set.