The appearance of heme, an organic ring surrounding an iron atom, in evolution forever
changed the efficiency with which organisms were able to generate energy, utilize gasses …

A half century ago, Max Perutz and John Kendrew determined the crystal structure of two
heme-containing proteins: hemoglobin and myoglobin, respectively. 1, 2 These landmark …

Ticks are obligate blood feeding ectoparasites that transmit a wide variety of pathogenic
microorganisms to their vertebrate hosts. Amblyomma sculptum is vector of Rickettsia …

Ovarian development and egg maturation are crucial processes for the success of
reproduction in ticks. Three full-length cDNAs encoding the precursor of major yolk protein …

Background Tick hemolymph bathes internal organs, acts as an exchange medium for
nutrients and cellular metabolites, and offers protection against pathogens. Hemolymph is …

Tick and tick-borne disease control have been a serious research focus for many decades.
In a global climate of increasing acaricide resistance, host immunity against tick infestation …

Ticks are blood-feeding arthropods that require heme for their successful reproduction.
During feeding they also acquire pathogens that are subsequently transmitted to humans …

While much effort has been put into understanding vitellogenesis in insects and other
organisms, much less is known of this process in ticks. There are several steps that facilitate …

An aqueous extract of the haematophagous poultry ectoparasite, Dermanyssus gallinae,
was subfractionated using anion exchange chromatography. Six of these subfractions were …

Ecdysteroids play an essential role in controlling insect development and reproduction.
Their pathway is regulated by a group of enzymes called Halloween gene proteins. The …