Small sized ribosomes from mitochondria of locusta migratoria

Small sized ribosomes from mitochondria of locusta migratoria.

RNA species from locust flight muscle mitochondria with apparent molecular weights of about 0.5 and 0.2 X lo6 have been reported [l-3]. In this paper data are presented which establish the existence of particles in locust muscle mitochondria having essential properties in common with ribosomes from which these RNA species may be derived. The sedimentation constant of these particles was estimat...

Electron Microscope Study of Mitochondrial 60s and Cytoplasmic 80s Ribosomes from Locusta Migratoria

Purified mitochondrial ribosomes (60S) have been isolated from locust flight muscle. Purification could be achieved after lysis of mitochondria in 0.055 M MgCl(2). Mitochondrial 60S and cytoplasmic 80S ribosomes were investigated by electron microscopy in tissue sections, in sections of pellets of isolated ribosomes, and by negative staining of ribosomal suspensions. In negatively stained prepa...

The characteristics of hexokinase from Locusta migratoria muscle.

Innervation of the ventral diaphragm of the locust (Locusta migratoria).

1. Innervation and some electrical properties of the locust ventral diaphragm were investigated with electrophysiological and histological methods. 2. Muscle fibres are coupled electrically. Electrical stimulation evokes a graded active membrane response. 3. Each segment is innervated by four motor neurones as follows. Two motor neurones are situated in each abdominal ganglion. Branches of thei...

Effect of Ecdysterone on Food Intake of Locusta migratoria Hoppers

Insect growth and developm ent are controlled by hormones [1, 2], The horm ones were also shown to control food intake and utilization in som e insects [3-8]. Ecdysone is associated not only w ith m oult­ ing and m etam orphosis but also with processes preparatory to a moult, such as cessation o f feeding and the onset o f the w andering stage [9]. Recently evidence for a relationship between f...