Antenna 9-methyl

Another antenna group that is particularly effective for lanthanide luminescence is carbosty-ril derivatives (7-amino-4-methyl-2(lH)-quinolinone), which can be attached to many chelating... 

A cluster of straight chain aldehydes and methyl ketones was identified from airborne volatiles collected from females of Hoplia equina. While all compounds were perceived by the males antennae, only tetradecane-2-one proved to be... 

A total of 21 compounds present in the surface and cephalic extracts of the queen bumblebee, Bomhus terrestris, evoked responses in male antennae. These included saturated and unsaturated fatty acids, ethyl and methyl esters of the fatty acids, heptacosene, 2-nonanone, and geranyl geraniol. A blend of synthetic versions of these compounds elicited typical male mating behavior. 

Female antennae detected small amounts of ( )- -farnesene, (Z, )-a-farne-sene, methyl salicylate and germacrene D, while other more abundant compounds, such as (3Z)-hexenyl acetate and ( )- -ocimene, gave no significant antennal response [378]. 

Figure 11. Mau water-splitting scheme. The xanthene dyes serve as the antenna molecules collecting the solar energy, transferring it to aa , which reduces methyl viologen (mv), which in turn reduces H+. EDTA reduces the oxidized aa to complete the cycle.

Females of the lymantriid, Porthetria dispar, the gypsy moth, liberate cls-7,8-epoxy-2-methyloctadecane (disparlure) as a sex pheromone (78). The probable precursor of the epoxide, (Z)-2-methyl-7-octadecene, is present in the gland in large quantities, and it has been demonstrated that the olefin is epoxidized in vivo (79). Disparlure is rapidly adsorbed on the male antennae and quickly converted to two more polar metabolites (80), probably as a consequence of hydrolysis of the epoxide group. 

Heptakis 6-0-t-butyldimethylsilyl-P-cyclodextrin, on reaction with 4-chloro-methyl-A -methyl-2-nitroaniline, affords the mono-3-substituted benzyl ether. P-Cyclodextrin carrying a 2-(naphthylmethyl) group at 0-6 exists with the aromatic rings within the cavity to an extent which is very temperature dependent. Temperature can therefore be used to control the degree of complexing of the aromatic system with a fluorescent naphthalene compound. Heptakis-[2,3-di-0-acetyl-6-deoxy-6-iodo]-P-cyclodextrin treated with 6-methoxycarbonyl-2-naphthol allowed access to the compound having naphthoic acid substituents at all of the primary positions, and this forms a very stable 1 1 complex with a merocyanine laser dye which is a mimic of the antenna function in photosynthesis and shows promise as a photochemical microreactor. Mono-[6-0-(8-qui-nolyl)]-P-cyclodextrin has been reported, and the stabilities of inclusion complexes with amino acid guests have been described. ... 

Blifemez O, Wobbe L, Niehaus K, Kruse O. Protein arginine methylation modulates light-harvesting antenna translation in Chlamydomonas reinhardtii. Plant J. 2011 65 119-30. 

Oxygen uptake by a digitonin-derived PSI submembrane fraction (8) was monitored at 22 C with methyl viologen as acceptor and DCIP/ascor-bate as donor. Samples were preincubated for 5 min at various temperatures. In the PSI preparations, oxygen uptake increased with incubation temperature similarly to the case in whole thylakoid membranes (Fig. 1, ref. 3, 5-6). The occurrence of heat stress stimulation in a PSI submembrane fraction confirms the conclusion by Thomas et al. (6) to the effect that the enhanced PSI electron flow is not due to an increased PSI antenna size following thermal dissociation of the peripheral PSII antenna complex. 

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