S 38. The mutarotation of lævomenthyl benzoylformate in alcoholic solutions

Glazer, J.; Turner, E. E.

doi:10.1039/jr949000s169

Cited by 12 publications

(17 citation statements)

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“…Upon trimer formation, the absorption is red-shifted and its strength and the quantum yield of fluorescence increased (Glazer et al, 1973;Mimuro et al, 1986; for a review see Glazer, 1985). The spectral properties, absorption strength and quantum yield of fluorescence of biliproteins depend on the state of aggregation.…”

Section: The Protein As a Polydentate Ligandmentioning

confidence: 99%

A Structural Basis of Light Energy and Electron Transfer in Biology (Nobel Lecture)

Huber

1989

Angew. Chem. Int. Ed. Engl.

262

117

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Aspects of intramolecular light energy and electron transfer will be discussed for three protein‐‐cofactor complexes, whose three‐dimensional structures have been elucidated by X‐ray crystallography: components of light‐harvesting cyanobacterial phycobilisomes; the purple bacterial reaction centre; and the blue multi‐copper oxidases. A wealth of functional data is available for these systems which allows specific correlations between structure and function and general conclusions about light energy and electron transfer in biological materials to be made.

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Section: The Protein As a Polydentate Ligandmentioning

confidence: 99%

A Structural Basis of Light Energy and Electron Transfer in Biology (Nobel Lecture)

Huber

1989

Angew. Chem. Int. Ed. Engl.

262

117

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“…The source of the organisms and the preparation of the biliprotein fractions from Anabaena variabilis and Porphyridium cruentum B has been described previously (1, 3). Allophycocyanins and C-phycocyanins were purified by the general procedures described previously (4,9). R-Phycocyanin was purified by the procedure of Glazer and Hixson (1).…”

Section: Methodsmentioning

confidence: 99%

“…Indeed, hybrid proteins have been successfully reconstituted from the subunits of C-phycocyanins derived from unrelated organisms (9).…”

mentioning

confidence: 99%

Biliproteins of cyanobacteria and Rhodophyta: Homologous family of photosynthetic accessory pigments

Glazer

Apell

Hixson

et al. 1976

Proc. Natl. Acad. Sci. U.S.A.

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Amino-terminal sequence determinations are re orted of the subunits of biliproteins of prokaryotic unicel ular and filamentous cyanobacteria and of eukaryotic unicellular red algae. The biliproteins examined, allophycocyanin, -phycocyanin, R-phycocyanin, b-phycoerythrin, and phycoerythrocyanin, vary with respect to the chemical nature and the number and distribution of the bilin chromophores between the two dissimilar subunits. The amino-terminal sequences fall into two classes, "a-type" and ",-type", with a high degree of homology within each class.In those biliproteins where the number of bilin chromophores on the two subunits is unequal, the subunit with the greater number of chromophores has the j#-type amino-acid sequence.Extensive homology also exists between a-and #-type sequences, strongly supporting the view that these arose by gene duplication to give rise to the ancestral a-and a-type genes early in the evolution of the biliproteins. The subsequent generation of the various classes of biliproteins appears to be the result of further gene duplication of the aand a-type genes, ultimately to give rise to families of polypeptide chains of similar sequence, but varying in the number of chromophore attachment sites and the structure of the chromophores. The phycobiliproteins are the major light-harvesting pigments of photosystem II of cyanobacteria and Rhodophyta.

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“…The methanol extract contained $35 lg/mL chlorophyll a and $13 lg/mL total colored carotenoids, while the DMF extract contained $46 lg/mL chlorophyll a and $18 lg/mL total colored carotenoids [34,36]. For the extract in water, it contained $0.4 mg/mL phycocyanin and $15 lg/mL mycosporine amino acid-like compounds (molar absorptivity 106,500 M À1 cm À1 for phycocyanin [38] and 43,800 M À1 cm À1 for mycosporine amino acid-like compounds [37]). …”

Section: Preparation Of Cyanobacteria-derived Samplesmentioning

confidence: 99%

“…The extracts were diluted with the solvents so that the linear transmittance is about 40-50% at 532 nm with a path length of 1 cm. The pigment concentrations in the extracts were photometrically determined [34,[36][37][38]. The methanol extract contained $35 lg/mL chlorophyll a and $13 lg/mL total colored carotenoids, while the DMF extract contained $46 lg/mL chlorophyll a and $18 lg/mL total colored carotenoids [34,36].…”

Section: Preparation Of Cyanobacteria-derived Samplesmentioning

confidence: 99%