Results 101 to 110 of about 10,390 (256)

Corallistine, a new polynitrogen compound from the sponge Corallistes fulvodesmus L. and L. [PDF]

open access: yes, 1989
Two polynitrogen compounds 1-methyl-pteridine-2,4-dione 1b and corallistine 2 were isolated from the new-caledonian sponge #Corallistes fulvodesmus$ L. & L.
Cesario, M.   +4 more
core  

Metabolic Processes Preserved as Biosignatures in Iron-Oxidizing Microorganisms: Implications for Biosignature Detection on Mars [PDF]

open access: yes
Iron-oxidizing bacteria occupy a distinct environmental niche. These chemolithoautotrophic organisms require very little oxygen (when neutrophilic) or outcompete oxygen for access to Fe(II) (when acidophilic).
Emerson, David   +3 more
core   +1 more source

PTERIDINES IN PHOTOSYNTHESIS [PDF]

open access: yesProceedings of the National Academy of Sciences, 1958
R C, Fuller, I C, Anderson, H A, Nathan
openaire   +2 more sources

Gene Regulation of Pteridine Reductase 1 in Leishmania Promastigotes and Amastigotes Using a Full-Length Antisense Construct

open access: yesIranian Journal of Parasitology, 2013
Background: Pteridine metabolic pathway is unusual features of Leishmania, which is necessary for the growth of parasite. Leishmania has evolved a complex and versatile pteridine salvage network which has the ability of scavenging a wide area of the ...
H Masjedi   +10 more
doaj   +2 more sources

Linkage of Pteridine Metabolism to Iron Homeostasis

open access: yesPteridines, 2004
Iron is an essential growth factor for the proliferation and differentiation of all living cells in being centrally involved in oxygen transport by hemoglobin and myoglobin, in electron transport during mitochondrial respiration as being a part of ...
Weiss Günter
doaj   +1 more source

Investigating the simultaneous effect of age and temperature on the population dynamics of female tsetse flies [PDF]

open access: yes, 2011
Thesis (MSc)--Stellenbosch University, 2011.ENGLISH ABSTRACT: Age and temperature are two factors that affect mortality in adult tsetse flies. Both are found to be very important, but the simultaneous effect of these factors on the mortality rate have ...
Elama Ameh, Josephine   +1 more
core  

Ninth Winter Workshop on Pteridines [PDF]

open access: hybrid, 1989
J. Anthony Blair   +2 more
openalex   +1 more source

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