نتایج جستجو برای: نتایج ppr

تعداد نتایج: 354838  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Sudarshan Rajagopal Keith Moffat

Photoactive yellow protein (E-PYP) is a blue light photoreceptor, implicated in a negative phototactic response in Ectothiorhodospira halophila, that also serves as a model for the Per-Arnt-Sim superfamily of signaling molecules. Because no biological signaling partner for E-PYP has been identified, it has not been possible to correlate any of its photocycle intermediates with a relevant signal...

2011
Konstantin Avrachenkov Nelly Litvak Danil Nemirovsky Elena Smirnova Marina Sokol

We study a problem of quick detection of top-k Personalized PageRank (PPR) lists. This problem has a number of important applications such as finding local cuts in large graphs, estimation of similarity distance and person name disambiguation. We argue that two observations are important when finding top-k PPR lists. Firstly, it is crucial that we detect fast the top-k most important neighbors ...

2009
S. C. Banik S. C. Podder M. A. Samad M. T. Islam

The sero-surveillance and immunization studies on Peste des Petits Ruminants (PPR) in non-descriptive indigenous sheep and Black Bengal goats aged between 5 to 12 months were carried out in the district of Mymensingh during the period from June to November 2003. Sero-prevalence of PPR by using competitive enzyme linked immunosorbent assay (C-ELISA) was conducted on 100 sheep and 100 goats which...

Journal: :Molecular phylogenetics and evolution 2010
Yao-Wu Yuan Chang Liu Hannah E Marx Richard G Olmstead

The pentatricopeptide repeat (PPR) gene family, with hundreds of members in land plant genomes, has been recognized as a tremendous resource for plant phylogenetic studies based on publicly available genomic data from model organisms. However, whether this appealing nuclear gene marker system can be readily applied to non-model organisms remains questionable, particularly given the potential un...

Journal: :Genetics 2009
John Paul Foxe Stephen I Wright

Pentatricopeptide repeat (PPR) proteins compose a family of nuclear-encoded transcriptional regulators of cytoplasmic genes. They have shown dramatic expansion in copy number in plants, and although the functional importance of many remains unclear, a subset has been repeatedly implicated as nuclear restorers for cytoplasmic male sterility. Here we investigate the molecular population genetics ...

2013
Jean Colcombet Mauricio Lopez-Obando Laure Heurtevin Clément Bernard Karine Martin Richard Berthomé Claire Lurin

Four hundred and fifty-eight genes coding for PentatricoPeptide Repeat (PPR) proteins are annotated in the Arabidopsis thaliana genome. Over the past 10 years, numerous reports have shown that many of these proteins function in organelles to target specific transcripts and are involved in post-transcriptional regulation. Therefore, they are thought to be important players in the coordination be...

2002
Tatsuya Kobayashi Ung - il Chung Ernestina Schipani Michael Starbuck Gerard Karsenty Takenobu Katagiri Dale L. Goad Beate Lanske Henry M. Kronenberg

Developing murine growth plates comprise at least three morphologically distinct groups of chondrocytes (see Fig. 3C): round periarticular chondrocytes, flat columnar chondrocytes and hypertrophic chondrocytes. Periarticular chondrocytes proliferate and differentiate into columnar chondrocytes that proliferate further and form orderly columns. Unlike the round periarticular chondrocytes, the fl...

2008
M. ASIM A. RASHID A. H. CHAUDHARY

Lyophilization stabilizes the biological materials by using two overlapping drying procedure i.e. primary drying by sublimation of the ice crystal from frozen material and secondary drying or desorption by evaporation of the free water adsorbed into the dried product. Three different stabilizers i.e. lactalbumin hydrolysate-sucrose, Weybridge medium and lactalbumin hydrolysate-manitol were used...

Journal: :JPMA. The Journal of the Pakistan Medical Association 2011
Mubashira Hashmi Mazhar Mobin Khurram A Siddiqui

Intermittent Photic Stimulation (IPS) is a well recognized provocation maneuver during EEG recording which helps in identifying underlying photosensitivity. The frequency and characteristics of various responses to photosensitivity among our adult patients was determine. EEGs of subjects > or =15 years from 2003-2006, were reviewed. Two main photosensitive responses were observed: Photoparoxysm...

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