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101.
A human ortholog of archaeal DNA repair protein Hef is defective in Fanconi anemia complementation group M 总被引:2,自引:0,他引:2
Meetei AR Medhurst AL Ling C Xue Y Singh TR Bier P Steltenpool J Stone S Dokal I Mathew CG Hoatlin M Joenje H de Winter JP Wang W 《Nature genetics》2005,37(9):958-963
Fanconi anemia is a genetic disease characterized by genomic instability and cancer predisposition. Nine genes involved in Fanconi anemia have been identified; their products participate in a DNA damage-response network involving BRCA1 and BRCA2 (refs. 2,3). We previously purified a Fanconi anemia core complex containing the FANCL ubiquitin ligase and six other Fanconi anemia-associated proteins. Each protein in this complex is essential for monoubiquitination of FANCD2, a key reaction in the Fanconi anemia DNA damage-response pathway. Here we show that another component of this complex, FAAP250, is mutant in individuals with Fanconi anemia of a new complementation group (FA-M). FAAP250 or FANCM has sequence similarity to known DNA-repair proteins, including archaeal Hef, yeast MPH1 and human ERCC4 or XPF. FANCM can dissociate DNA triplex, possibly owing to its ability to translocate on duplex DNA. FANCM is essential for monoubiquitination of FANCD2 and becomes hyperphosphorylated in response to DNA damage. Our data suggest an evolutionary link between Fanconi anemia-associated proteins and DNA repair; FANCM may act as an engine that translocates the Fanconi anemia core complex along DNA. 相似文献
102.
Electro-Pulse-Boring (EPB):Novel Super-Deep Drilling Technology for Low Cost Electricity 总被引:1,自引:0,他引:1
The inexhaustible heat deposit in great depths (5–10 km) is a scientific fact. Such deposit occurs around the globe. Thereby, everybody is enabled to generate autonomously clean and renew-able energy, ... 相似文献
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Hans Kuhn 《Cellular and molecular life sciences : CMLS》1945,1(1):28-29
Ohne Zusammenfassung 相似文献
106.
Hans Winterstein 《Cellular and molecular life sciences : CMLS》1946,2(9):380-380
Ohne Zusammenfassung 相似文献
107.
研究了由平均直径为210μm的玻璃球在硅油中加直流电场后形成的单链的导电行为,主要研究了链的轴向应变对其导电性质的影响。 相似文献
108.
Mutations in DNAH5 cause primary ciliary dyskinesia and randomization of left-right asymmetry. 总被引:19,自引:0,他引:19
Heike Olbrich Karsten H?ffner Andreas Kispert Alexander V?lkel Andreas Volz Gürsel Sasmaz Richard Reinhardt Steffen Hennig Hans Lehrach Nikolaus Konietzko Maimoona Zariwala Peadar G Noone Michael Knowles Hannah M Mitchison Maggie Meeks Eddie M K Chung Friedhelm Hildebrandt Ralf Sudbrak Heymut Omran 《Nature genetics》2002,30(2):143-144
109.
Large scale optimization problems can only be solved in an efficient way, if their special structure is taken as the basis of algorithm design. In this paper we consider a very broad class of large — scale problems with special structure, namely tree structured problems. We show how the exploitation of the structure leads to efficient decomposition algorithms and how it may be implemented in a parallel environment. 相似文献
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