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RESEARCHES
I study plant proteins which inhibit hydrolytic enzymes of various organisms:
Inhibitors are of interest as:
The inhibitors are well studied in various plants, but, generally, molecular structures of single inhibitors are studied much more then their natural variability in plant taxa.
The simple and sensitive methods for detection of inhibitors
of
alpha-amylases, serine
and cysteine proteinases and lectins
among plant proteins separated by electrophoresis, isoelectric
focusing or thin layer gel-filtration were elaborated (Konarev,
1985,
1986; Konarev et al.,
1991,
2000,
2002).
These methods were used in study of the polymorphism and
natural variability of main inhibitor systems in wild and cultivated species
of
wheat and related cereals, rice, potato,
Vigna and Phaseolus,
sunflower, various
Compositae,
other Asteridae,
Gymnospermae and for
identification of novel inhibitor types. Small (1.5 kDa)
cyclic trypsin inhibitor
from sunflower seeds can be one of the examples of such inhibitors.
Besides, I like to travel. I collect wild plants or simply vizit exotic places...
EXAMPLES OF RESEARCHES
Polymorphism of insect alpha-amylase
inhibitors in diploid wheats collected in Armenia and Azerbaidjan.
A, isoelectric focusing.
B, thin layer gel filtration.
Inhibitors of Tenebrio molitor amylase were detected
with use of
PAAG/starch/amylase replicas
Variability of trypsin inhibitors in Vigna
and Phaseolus species.
Isoelectric focusing of seed proteins followed by detection of
inhibitors with use of
gelatin replicas method.
More than 500 species of
Compositae
and other
Asteridae were screened for proteinase inhibitors.
Cyclic low-molecular
trypsin inhibitor consisting only of 14 amino acid residues
was found only in seeds of Helianthus and Tithonia
species. It appeared to be the smallest and most potent trypsin
inhibitor ever found in plants.
KEY WORDS
insect amylase inhibitors, proteinase inhibitors, trypsin inhibitors, chymotrypsin inhibitors, subtilisin inhibitors, cysteine proteinase inhibitors, papain inhibitors, ficin inhibitors, lectins, methods for detection of inhibitors, plant diversity, plant evolution, plant systematics, plant resistance, cereals, legumes, potato, sunflower, Compositae, Asteridae, Gymnospermae, Triticum, Aegilops, Secale, Hordeum, Vigna, Phaseolus, Oryzae, Helianthus, Carthamus, Cosmos, Zinnia, Centaurea, Veronica, Anthriscus
http://delphi.phys.univ-tours.fr/Prolysis/ - Protease inhibitors
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