CLCA: Maximum Common Molecular Substructure Queries within the MetRxn Database

2014 ◽  
Vol 54 (12) ◽  
pp. 3417-3438 ◽  
Author(s):  
Akhil Kumar ◽  
Costas D. Maranas
1963 ◽  
Vol 11 (3) ◽  
pp. 217-223 ◽  
Author(s):  
Rudy H. Haschemeyer ◽  
Robert E. Nadeau

Author(s):  
Shaun Lovejoy

“The climate is what you expect, the weather is what you get”: The climate is a kind of average weather. But is it really? Those of us who have thirty years or more of recall are likely aware of subtle but systematic changes between today’s weather and the weather of their youth. I remember Montreal winters with much more snow and with longer spells of extreme cold. Did it really change? If so, was it only Montreal that changed? Or did all of Quebec change? Or did the whole planet warm up? And which is the real climate? Todays’ experience or that of the past? The key to answering these questions is the notion of scale, both in time (du­ration) and in space (size). Spatial variability is probably easier to grasp because structures of different sizes can be visualized readily (Fig. 1.1). In a puff of cigarette smoke, one can casually observe tiny wisps, whirls, and eddies. Looking out the window, we may see fluffy cumulus clouds with bumps and wiggles kilometers across. With a quick browse on the Internet, we can find satellite images of cloud patterns literally the size of the planet. Such visual inspection confirms that structures exist over a range of 10 billion or so: from 10,000 km down to less than 1 mm. At 0.1 mm, the atmosphere is like molasses; friction takes over and any whirls are quickly smoothed out. But even at this scale, matter is still “smooth.” To discern its granular, molecular nature, we would have to zoom in 1,000 times more to reach submicron scales. For weather and climate, the millimetric “dissipation scale” is thus a natural place to stop zooming, and the fact that it is still much larger than molecular scales indicates that, at this scale, we can safely discuss atmos­pheric properties without worrying about its molecular substructure. Clouds are highly complex objects. How should we deal with such apparent chaos? According to Greek mythology, at first there was only chaos; cosmos emerged later.


1988 ◽  
Vol 200 (2) ◽  
pp. 351-365 ◽  
Author(s):  
A.C. Steven ◽  
B.L. Trus ◽  
J.V. Maizel ◽  
M. Unser ◽  
D.A.D. Parry ◽  
...  

2003 ◽  
Vol 44 (5) ◽  
pp. 201-207 ◽  
Author(s):  
Juergen Mollenhauer ◽  
Matthias Aurich ◽  
Carol Muehleman ◽  
Giorgi Khelashvilli ◽  
T. C. Irving

2016 ◽  
Vol 18 (35) ◽  
pp. 24318-24324 ◽  
Author(s):  
Claudia Caddeo ◽  
Claudio Melis ◽  
Maria Ilenia Saba ◽  
Alessio Filippetti ◽  
Luciano Colombo ◽  
...  

It is shown by molecular dynamics that the substructure of organic molecules can tailor the thermal conductivity of MAPI.


2008 ◽  
Vol 130 (1) ◽  
pp. 330-337 ◽  
Author(s):  
K MASUNAGA ◽  
S MICHIWAKI ◽  
R IZUMI ◽  
P IVARSSON ◽  
F BJOREFORS ◽  
...  

1982 ◽  
Vol 216 (1205) ◽  
pp. 385-396 ◽  

When synaptosomes are prepared from rat brain and incubated in Krebs solution, the presynaptic bulb develops a coil of microtubules (mts). Various considerations indicate that the coil does not have a cytoskeletal supportive function. Synaptosome coil mts show certain peculiarities, e. g. they thrive during incubation in Krebs solution (dendritic mts are depolymerized in Krebs solution) and they show no protofilament molecular substructure with tannic acid. Dendritic mts show clearly a 13 protofilament substructure when processed in the same way. Synaptosomal coil mts are sensitive to micromolar calcium and are depolymerized by treatment of the synaptosomes with veratridine or A23187. Our evidence indicates that coil mts of synaptosome and synaptic vesicle clothed mts of ‘intact’ albumin-treated synapses are different morphological and functional entities. As mentioned above, the function of coil mts remains enigmatic, while the mts seen in albumin-treated synapses could well have a role in synaptic vesicle translocation.


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