Mass spectrometric determination of the amino acid sequence in peptides: Desulfurization of sulfur-containing peptides

, N- 20 - .     

IdentifyingY chromosome in interphase nuclei of the human brain

. . . -- , - .     

Study of neurosecretory cells ofHelix pomatia by intracellular dye injection

#x043E; , . , .     

Neurogenic responses of resistance and capacitance vessels

- . , , , . , .     

Contribution to the method for approximation of X-ray diffraction line profile

. , . .     

Interaction of polyene antibiotics and serum lipoproteins

-.     

Ontogenic development and anatomical distribution of a supernumerary limb-inducing factor

. .

---

---

This work was supported by a Rackham Grant from the University of Michigan.     

Genetic control over the duration of G1 phase

or fi y G₁ , .     

Changes in the lumen of coronary vessels under oligemic hypotension

Conclusions The decrease of circulating blood volume, resulting in oligemic hypotension, may evoke in anaesthetized cat the active constrictory coronary vessel responses of 2 types, one occuring immediately after start of the hypotension and the other having a significantly prolonged latency.

---

, , , , ( 4 ), ( 45 ).

     

Temperature sensitivity in the respiratory-deficient mutants of yeast (Saccharomyces cerevisiae)

Saccharomyces cerevisiae . , .     

Do the respiratory muscles and lung receptors influence the respiratory sensitivity to CO2?

, CO₂. CO₂ CO₂ , . , CO₂, CO₂ . , , CO₂, CO₂ .     

Deamination by ‘Transformed’ mitochondrial amine oxidase of the ε-amino group of lysine and selective inhibition of this reaction by β-aminopropionitrile

« » - . -.     

Effect of 2-Br-α-ergokryptine (CB 154) on lactation in the bitch

Zusammenfassung Es wurde gezeigt, dass bei Hündinnen die Lactation durch den Prolactin-Sekretionshemmer 2-Br--Ergokryptin-methanesulfonat (CB 154, Sandoz) gehemmt wird. Gemessen über 24 Stunden beträgt die ED₅₀ i.m. 6 g/kg.     

Total synthesis of orellinine,a minor toxic component of the fungusCortinarius orellanus fries

Summary The 3,3,4,4-tetrahydroxy-2,2-bipyridyl-N-oxide has been synthesized by dealkylation of the corresponding tetramethyl derivative. The chemical properties of this compound are identical to those reported for the minor fungal toxin ofCortinarius orellanus, orellinine.This work is part of the Tesi di Laurea of Miss Cinzia Pierucci.     

Über das Vorkommen verschieden substituierter Chalkone während der Mikrosporogenese beiTulipa

Summary During the development of anthers inTulipa cv. Apeldoorn the following chalcones were isolated: 2, 3, 4, 4, 6-pentahydroxychalcone as the main component and 2, 4, 4, 6-tetrahydroxy-3-methoxychalcone as well as 2, 4, 4, 6-tetrahydroxychalcone in a very small amount.

---

---

Die Untersuchungen wurden mit Mitteln der Deutschen Forschungsgemeinschaft unterstützt.     

On the stability of cognitive processes

Summary An empirical and mathematical model for self-organization is proposed, based on elemental properties, on unique interaction and on the combination of hierarchical elements. In the model, higher elements are stabilized by the cognitive (strong) interaction of subelements, disregarding intermediate elements. This is called elementary reductionism and is illustrated by the sequence quarks-elementary particles-atoms-molecules-cells-organisms-societies. Optimal dynamic interaction of nonidentical elements is called cognitive stability. This is compared with thermodynamic equilibrium. The principal differences are outlined.     

Synthesis and pharmacological properties of [1-N4-dimethyl-asparagine]-angiotensin II

Summary [1-N⁴-Dimethyl-asparagine]-angiotensin II was synthesized by Merrifield's solid-phase procedure. The analogue gave rat blood pressure about 70% relative potency to Hypertensin (Ciba). Rabbit aorta strips gave intrinsic activity _E=1, a PD₂ of 6.92±0.09 and an affinity relative to [Asn¹]-angiotensin II of 6.5%.The editors do not hold themselves responsible for the opinions expressed in the authors' brief reports. — Les auteurs sont seuls responsables des opinions exprimées dans ces brèves communications. — Für die Kurzmitteilungen ist ausschliesslich der Autor verantwortlich. — Per le brevi comunicazioni è responsabile solo l'autore. — . — Solo los autores son responsables de las opiniones expresadas en estas comunicationes breves.Acknowledgment. The authors wish to express their appreciation to Dr Emanuel Escher, School of Medicine, Centre Hospitalier Universitaire, Sherbrooke, Quebec, for his help in providing the biological data and critical comments.     

Chromosomes and giemsa-bands of the Idaho spotted ground squirrel,Spermophilus brunneus (Howell)

-Spermophilus brunneus . , 13 18 ,S. brunneus S. townsendii mollis (2n=38) , , ; ;S. brunneus . S. brunneus , Spermophilus.

---

---

Supported by National Science Foundation Grants No. GB32114X and No. GB 29131X, and the Sprague Foundation. We thankD. Pozin for technical assistance.     

Hydrolysis of amino acid β-naphthylamides by aminopeptidases in the parotid gland

Zusammenfassung Die Aktivität der Aminopeptidasen in Ohrspeicheldrüsen wurde gemessen. Glycyl-Prolin-naphthylamid, Alanin-naphthylamid, Leucin-naphthylamid, Methionin-naphthylamid, und Arginin-naphthylamid wurden von der Mikrosomenfraktion und der löslichen Fraktion schnell gespalten. Das Glycyl-Prolin-naphthylamid spaltende Enzym war in Ohrspeicheldrüsen in relativ grösserer Menge vorhanden. Die Aufspaltung von Glycyl-Prolin-naphthylamid in Glycyl-Prolin und-Naphthylamin wurde papierchromatographisch nachgewiesen.     

Correlations between glucose-inhibition and control parameters of α-glucosidase kinetics inApis mellifica haemolymph (Hymenoptera: Insecta)

Summary Kinetics studies of haemolymph -glucosidase inhibition by D. glucose led to general correlations between inhibition and control parameters, all over the honeybee development. Maximum velocities are not affected by the inhibition, while affinity constants are always significantly increased, and Hill coefficients tend to decrease, especially in foraging adults and in prenymphs. In this later case, the n-type effect tends to break the manifestation of the K-type mechanism.