Four growth-influencing compounds-hydroxyproline, 2,2'-dipyridyl, 2-chloroethylphosphonic acid, and indoleacetic acid-were used to examine the relationship between lignin formation and growth of wheat coleoptile sections. Hydroxyproline and 2-chloroethylphosphonic acid, at low concentrations, inhibited growth and increased lignin content. Dipyridyl, which promoted coleoptile elongation, decreas...

Recently, the importance of proline ring pucker conformations in collagen has been suggested in the context of hydroxylation of prolines. The previous molecular mechanics parameters for hydroxyproline, however, do not reproduce the correct pucker preference. We have developed a new set of parameters that reproduces the correct pucker preference. Our molecular dynamics simulations of proline and...

AIMS To examine a possible effect of 7-methylxanthine, theobromine, acetazolamide, or L-ornithine on the ultrastructure and biochemical composition of rabbit sclera. METHODS Groups of pigmented rabbits, six in each group, were dosed during 10 weeks with one of the substances under investigation, and one untreated group was the control. Samples of anterior and posterior sclera were taken for d...

background persian oak (quercus brantii) belongs to the fagaceae family. it is a medicinal plant which is commonly used by the tribes in south western iran to treat inflammatory and gastric ulcers. objectives the aim of this study was to evaluate the effectiveness of persian oak ointment on dermal wound healing in rats. materials and methods for making full-thickness wounds in rats, the excisio...

Calf lens has the capacity for accumulating proline, hydroxyproline, tyrosine, and tryptophan from a buffered salt medium supplemented with glucose. Sufficient energy to accomplish this task can be derived from anaerobic glycolysis. Apparently a variety of neutral amino acids can enter the lens by a common path, if fudged by the existence of competitive effects. Ouabain, an inhibitor of active ...

A study of two siblings with a severe infantile form of familial idiopathic hyperphosphatasia is reported. A girl aged one year was followed for two years while receiving intermittent treatment with porcine calcitonin. This induced a clinical remission, a reduction of both the high serum level of alkaline phosphatase and the raised urinary excretion of hydroxyproline, and a remarkable improveme...