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'Aromatic Amino Acids' in keywords
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1994 (1)
1977 (1)
1Author    Luigi Sportelli, H. Arald Neubacher, Wolfgang LohmannRequires cookie*
 Title    N O T I Z E N On the Influence of Arom atic R esidues on the Interaction of Copper (II) w ith Small P eptides Containing Arom atic Am ino Acids: ESR and Optical Studies  
 Abstract    The complexation behaviour of C u(II) with di-and tri­ peptides containing the aromatic amino acids phenylalanine or tryptophan has been investigated at different pH-values and compared with results obtained with di-and triglycine. The results obtained by means of ESR and optical absorp­ tion spectroscopy show an influence of the two different aromatic entities on the magnetic and optical param eters. A significant decrease of the < 7||-value and, concom ittantly, an increase of the energy of the d-d transition was m easured when an aromatic entity is present in the peptide. A possible explanation for this observation is given. 
  Reference    (Z. Naturforsch. 32c, 643 [1977]; received May 4 1977) 
  Published    1977 
  Keywords    Copper (II)-Complexes, Peptides, Aromatic Amino Acids, Optical Absorption 
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 TEI-XML for    default:Reihe_C/32/ZNC-1977-32c-0643_n.pdf 
 Identifier    ZNC-1977-32c-0643_n 
 Volume    32 
2Author    T. Shimizu, N. TakedaRequires cookie*
 Title    Arom atic Amino Acid and Amine Levels in the Hemolymph of Parasitized and Unparasitized Larvae of M ythim na separata  
 Abstract    The levels of aromatic amino acids and amines in the hemolymph of larvae of the common armyworm, My­ thimna separata, were analyzed after parasitization by the braconid wasp, Apanteles kariyai. Methyldopa, homovanillic acid, tryptophan and tyrosine remained unchanged in unparasitized and parasitized larvae. Dop­ amine and DOPA showed characteristic changes at pupation that were associated with the hardening and darkening of the cuticle; Dopamine in the hemolymph of unparasitized last instar larvae increased before pu­ pation. Large increases in kynurenine and octopamine were detected in parasitized larvae. The increased level of octopamine in the hemolymph may be stress related. 
  Reference    Z. Naturforsch. 49c, 693—69 (1994); received April 5 1994 
  Published    1994 
  Keywords    Aromatic Amino Acid, Aromatic Amine, Hemolymph, Mythimna separata, Apanteles kariyai 
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 TEI-XML for    default:Reihe_C/49/ZNC-1994-49c-0693_n.pdf 
 Identifier    ZNC-1994-49c-0693_n 
 Volume    49