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The respiratory proteins of insects
Journal of Insect Physiology, 2007For a long time, respiratory proteins have been considered unnecessary in most insects because the tracheal system was thought to be sufficient for oxygen supply. Only a few species that survive under hypoxic conditions were known exceptions. However, recently it has become evident that (1) intracellular hemoglobins belong to the standard repertoire of
Thorsten, Burmester, Thomas, Hankeln
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Insect Defense Proteins and Peptides
2020The composition of insect hemolymph can change depending on many factors, e.g. access to nutrients, stress conditions, and current needs of the insect. In this chapter, insect immune-related polypeptides, which can be permanently or occasionally present in the hemolymph, are described.
Iwona, Wojda +3 more
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2020
Insects are the most abundant and diverse group of animals on earth. Therefore, it is not surprising that they have evolved numerous, generally non-mutually exclusive, adaptations to permit survival at subzero temperatures. In general, these adaptations can be divided into those that prevent freezing of freeze susceptible species (freeze avoidance) and
John G. Duman, Samuel S. Newton
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Insects are the most abundant and diverse group of animals on earth. Therefore, it is not surprising that they have evolved numerous, generally non-mutually exclusive, adaptations to permit survival at subzero temperatures. In general, these adaptations can be divided into those that prevent freezing of freeze susceptible species (freeze avoidance) and
John G. Duman, Samuel S. Newton
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Membrane Protein Production in Insect Cells
2022Membrane proteins are an essential part of the machinery of life. They connect the interior and exterior of cells, play an important role in cell signaling and are responsible for the influx and efflux of nutrients and metabolites. For their structural and functional analysis high yields of correctly folded and modified protein are needed. Insect cells,
Vaitsopoulou, Afroditi +4 more
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1990
Publisher Summary This chapter discusses the structure and function of major groups of hemolymph proteins that are common to all insects, storage proteins, lipoproteins, vitellogenins, and inducible antibacterial proteins. It also discusses some proteins and peptides that are present in smaller amounts, sometimes occurring only in a few insect ...
Michael R. Kanost +5 more
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Publisher Summary This chapter discusses the structure and function of major groups of hemolymph proteins that are common to all insects, storage proteins, lipoproteins, vitellogenins, and inducible antibacterial proteins. It also discusses some proteins and peptides that are present in smaller amounts, sometimes occurring only in a few insect ...
Michael R. Kanost +5 more
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Gel filtration of insect haemolymph proteins
Canadian Journal of Zoology, 1968Haemolymph from 6th instar larvae of Malacosoma americanum and 5th instar nymphs of Locusta migratoria was subjected to gel filtration on Sephadex G-200. Three protein fractions were produced in each case. Each fraction was analyzed for protein content and assayed for esterase and tyrosinase activity.
B G, Loughton, A S, West
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Thioester-containing proteins and insect immunity
Molecular Immunology, 2004Here, we discuss the role of thioester-containing proteins in innate immune responses of insects. TEPs are represented by multi-member families both in the fruitfly, Drosophila melanogaster, and in the mosquito, Anopheles gambiae. Phylogenetic analysis of the family suggests that in these two dipteran species evolution of TEPs followed independent ...
Stéphanie, Blandin, Elena A, Levashina
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Natural precipitating proteins in insect haemolymph
Journal of Insect Physiology, 1970Abstract Spontaneous precipitation of haemolymph proteins of Galleria mellonella and Periplaneta americana occurred when diffused in agar phosphate buffered at pH 7·4. Insect plasma protein of these two species diffused against each other in agar borate at pH 9·0 (a condition which minimized spontaneous or autoprecipitation), developed precipitated ...
H R, Bullock, A L, Steinhauer
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Insect antibacterial proteins: Not just for insects and against bacteria
BioEssays, 1991AbstractIn response to a bacterial infection, insects launch an array of countermeasures. Among these are the antibacterial proteins, which effectively lyse bacteria or are bacteriostatic. These proteins were generally assumed to be restricted to insects, yet recent information has shown some homologous counterparts in verte brates, including humans ...
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Insect chitinase and chitinase-like proteins
Cellular and Molecular Life Sciences, 2009Insect chitinases belong to family 18 glycosylhydrolases that hydrolyze chitin by an endo-type of cleavage while retaining the anomeric beta-(1-->4) configuration of products. There are multiple genes encoding chitinases and chitinase-like proteins in all insect species studied using bioinformatics searches.
Yasuyuki, Arakane +1 more
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