Publications

binding and spectroscopic properties of ostrich neurophysins. probing the role of residue 35 at the monomer-monomer interface.	binding and spectroscopic properties of ostrich neurophysins were examined with emphasis on the behavior of tyr-35, a residue that provides a potential probe of the monomer-monomer interface and of allosteric interrelationships between this region and the binding site. mesotocin-associated ostrich neurophysin was found to bind oxytocin and related peptides with affinities comparable to the mammalian proteins, but induced a significantly different optical activity in bound peptides than the mamma ...	1992	1428529
isolation and characterization of glycosylated and non-glycosylated prolactins from alligator and crocodile.	two molecular forms of prolactin (prl), glycosylated and non-glycosylated, were isolated from pituitary glands of two reptiles, alligator and crocodile. the reptilian prls were extracted under alkaline conditions from the precipitate obtained after pituitaries were first extracted with 0.25 m sucrose, 1 mm nh4hco3, ph 6.3. purification was performed by ion exchange chromatography on de-52, gel filtration on sephadex g-75 superfine, and reversed phase high performance liquid chromatography. two f ...	1992	1399264
pleistocene geochronology and palaeothermometry from protein diagenesis in ostrich eggshells: implications for the evolution of modern humans.	proteinaceous residues incorporated within the crystal structure of ostrich eggshells (oes) are retained without loss over geological time exceeding 10 million years. degradation of the polypeptides, including hydrolysis to smaller peptide fragments and eventual release of free amino acids, decomposition, and racemization and epimerization occur at regular, predictable rates dependent on ambient temperature. the extent of isoleucine epimerization (aile/ile ratio) in oes follows linear first-orde ...	1992	1357689
a mechanism for lipid accumulation and central necrosis in fibrous plaques.	this is a step section study of 3 fibrous plaques from the abdominal aorta of an ostrich. the distribution of gelatinous like lesions in these plaques suggested that the gelatinous lesions were formed by the influx of plasma at the plaque shoulders. two gelatinous lesions extended like tunnels into the center of one of the plaques. the presence of focal necrosis and large cholesterol crystals in one of these gelatinous tunnels deep within the plaque suggested that gelatinous lesions might repres ...	1976	1274794
biologic effects of plant toxins and aflatoxins in rats.	after weaning, groups of rats were fed a semi-purified diet containing fiddlehead greens (the unfuried frond of the ostrich fern matteuccia struthiopteris), mature bracken fern (pteridium aquilinum), or cycad meal (cycas circinalis), or this diet plus aflatoxin b1. the groups fed 1-10% fiddlehead greens for 70-73 weeks developed no tumors, whereas those fed mature bracken fern for 67 weeks developed small-bowel adenocarcinomas (3/17). those fed 3% cycad meal for 64 weeks developed tumors of the ...	1976	1255785
[comparison of feet--ostrich, horse and man].		1976	987298
the ostrich (struthio camelus) egg-white lysozyme.	the purification of ostrich (struthio camelus) egg-white lysozyme is reported. the quantitative amino acid composition, the molecular weight, the n-terminal sequence (34 amino acids) as well as kinetic studies allow to range this enzyme among the goose type lysozymes.	1977	904618
aortic rupture in ostriches (struthio camelus)-a comparative study.		1977	838902
specific serological identification of ostrich meat and meat products.	using aqueous urea solution extracts of heated ostrich muscle as antigen for the production of precipitating rabbit antiostrich sera, it was possible to specifically identify raw, heated (70-95 degrees c) and air dried-salted ostrich meat by means of gel immunodiffusion tests. the sera did not react with chicken, turkey or horse meat or with beef in any form. the soluble proteins extracted from ostrich meat heated to temperatures of 70 degrees c for 30 minutes appear to constitute at least two c ...	1975	815549
safety examination of some edible plants, part 2.	the carcinogenicity of cacalia, dandelion, ostrich-fern, and aralia, which are wild plants used as human food or folk medicine, and of burdock, bambooshoots, and lotus, which are cultivated as vegetables in japan, was examined in an inbred strain aci rats. fresh plant materials were dried, milled, and mixed with the rat basal diet in the ratio of 4--33% of the total. these diets thus prepared were administered to rats for periods ranging upward from 120 days. however, carcinogenic activity was n ...	1978	722187
reappraisal of energetics of locomotion shows identical cost in bipeds and quadrupeds including ostrich and horse.		1979	514349
[lipids in the egg shell of the ostrich (struthio camelus) (author's transl)].	the egg shell (with cuticle) of the ostrich contained a total lipid concentration of 0.19 mg/g egg shell; the phospholipids constituted the major portion, among the neutral' lipids cholesterol esters, cholesterol and free fatty acids were identified. the egg shell lipids showed a stimulating effect on the crystal growth of calcium carbonate; the highest rate of crystal growth was observed with the phospholipid fraction.	1979	477864
the american board of family practice: phoenix or ostrich in 1983?		1979	429984
homology of single copy and repeated sequences in chicken, duck, japanese quail, and ostrich dna.	the extent of reassociation of 3h-labeled repetitive or single copy dna sequences from the chicken with excess unlabeled dna from the duck, the japanese quail, and the ostrich, respectively, was measured by hydroxylapatite chromatography. chicken repetitive dna reassociated to an equal or greater extent than chicken single copy dna with the dna of each of the other birds. using an isolated subfraction of chicken repetitive dna representing those dna sequences common to the chicken and ostrich ge ...	1978	310314
the specificity of the reaction of collagen with platelets.	1. human platelets will react with a number of different collagens from guinea-pig to ostrich. 2. human skin collagen when treated with pepsin does not react with human platelets. 3. calf platelets display a different pattern of reactivity than that of human platelets.	1978	262326
adrenocorticotropin 53. the amino acid sequence of the hormone from the ostrich pituitary gland.		1978	208539
the isolation and characterization of corticotropin from the pituitary gland of the ostrich struthio camelus.	1. avian corticotropin (acth) was purified from both fresh and aged pituitary glands of the ostrich struthio camelus. 2. the isolation of corticotropin in pure form involved acid/acetone extraction, nacl fractionation, cm-cellulose chromatography and sephadex g-50 chromatography. 3. the hormone preparations from fresh and aged glands behaved as single substances on polyacrylamide-gel electrophoresis, and both preparations were found to consist of 39 amino acid residues, in identical molar propor ...	1977	200225
studies on avian erythrocyte metabolism. inositol tetrakisphosphate: the major phosphate compound in the erythrocytes of the ostrich (struthio camelus camelus).		1977	19258
proteolytic activity in the pituitary gland of the ostrich (struthio camelus) and the isolation of an apparent endogenous substrate.		1976	3355