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'Insect Cuticle' in keywords Facet   section ZfN Section C  [X]
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1986 (1)
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1Author    Klaus Scheller, Hans-Peter Zim, Erm Ann, ConstantinE. SekerisRequires cookie*
 Title    Calliphorin, a Protein Involved in the Cuticle Formation of the Blowfly, Calliphora vicina  
 Abstract    Injections of radioactively labelled calliphorin into Illrd instar larvae o f Calliphora indicate that the protein is incorporated into the integument. Immunofluorescence techniques show that the endocuticle is the Final site o f deposition o f calliphorin. It is concluded that calliphorin is an essen­ tial protein of the tanned cuticle. 
  Reference    Z. Naturforsch. 35c, 387—389 (1980); received December 28 1979/February 14 1980 
  Published    1980 
  Keywords    Calliphorin, Insect Cuticle, Immunofluorescence, Calliphora vicina 
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 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0387.pdf 
 Identifier    ZNC-1980-35c-0387 
 Volume    35 
2Author    Lothar Grün, MartinG. PeterRequires cookie*
 Title    Incorporation of Radiolabeled Tyrosine, N-Acetyldopamine, N-/J-Alanyldopamine, and the Arylphorin Manducin into the Sclerotized Cuticle of Tobacco Hornworm (Manduca sexta) Pupae  
 Abstract    Radiolabeled manducin, which is the arylphorin (i.e. tyrosine-rich larval serum protein) o f the tobacco hornworm Manduca sexta was prepared by in vivo biosynthesis from [U -l4C]-L-tyrosine. In order to see whether manducin is incorporated into the cuticle o f d evelop in g pupae and participates in cuticle sclerotization, the radiolabeled protein was injected into late last larval instar larvae. Fractionation o f the sclerotized pupal cuticle into a buffer soluble, acid soluble and acid insoluble fraction shows that up to 2.6% o f peptidic tyrosine residues end up in the acid soluble portion. Another 0.5% are recovered from the acid insoluble fraction by com bustion. Only 30% o f peptidic tyrosine residues o f m anducin incorporated into the acid soluble fraction are recovered as tyrosine. The presence o f radioactivity in the acid insoluble fraction suggests that peptidic tyrosine residues are transformed partly into m elanin-like m aterial. The in­ corporation o f manducin into the cuticle o f pupae is also evident from im m unological studies. Relative large quantities o f radiolabeled acid insoluble m elanine like m aterial is also recovered from sclerotized cuticle after incorporation o f radiolabeled tyrosine as well as tanning substrates N-acetyldopam ine and N-/?-alanyldopamine. A p plication o f doubly labeled [7-3H,8-l4C]-N-acetyldopamine shows a high loss o f 3H in the acid insoluble fraction. It is suggested that tanning agents form lignine-like polymers and that sclerotization results from copolym erization with peptidic tyrosine residues in the cuticle. Thus, the arylphorin m anducin appears to be an important constituent o f the sclerotization system in M anduca sexta. 
  Reference    Z. Naturforsch. 39c, 1066—1074 (1984); received June 1/August 27 1984 
  Published    1984 
  Keywords    Arylphorins, Copolymerization, Insect Cuticle, Sclerotization, Tanning Substrates 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-1066.pdf 
 Identifier    ZNC-1984-39c-1066 
 Volume    39 
3Author    MartinG. Peter, HartmutB. Stegmann, Hoang Dao-Ba, Klaus SchefflerRequires cookie*
 Title      
 Abstract    ESR-spectra were recorded during the oxidation of N-acetyldopamine and N-ß-alanyldopamine in aqueous solutions. Semiquinone radicals were detected under conditions of spin stabilization by Z n2+ ions. The appearance of the spectra was the same in the presence or in the absence of proteins. No evidence was obtained for the formation of products that could have arisen eventual­ ly from intermolecular Michael-type addition of nitrogen nucleophiles. 
  Reference    Z. Naturforsch. 40c, 535—538 (1985); received January 31 1985 
  Published    1985 
  Keywords    ESR-Spectroscopy, Catecholamines, Semiquinones, Insect Cuticle 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0535.pdf 
 Identifier    ZNC-1985-40c-0535 
 Volume    40 
4Author    György Matolcsy, István Ujváry, LynnM. Riddiford, Kiyoshi HirumaRequires cookie*
 Title    Alkylene-bis-isothiocyanates: Novel Insect Growth Regulators  
 Abstract    In search for selective anti-insect agents some mono-and bis-isothiocyanates were prepared and tested on third instar larvae of Manduca sexta. The alkylene-bis-isothiocyanates 4, 5 and 6 had a 
  Reference    Z. Naturforsch. 41c, 1069—1072 (1986); received May 30 1986 
  Published    1986 
  Keywords    Alkylene-bis-isothiocyanates, Insect Cuticle, Spiracles, Crochets, Insect Control 
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 TEI-XML for    default:Reihe_C/41/ZNC-1986-41c-1069.pdf 
 Identifier    ZNC-1986-41c-1069 
 Volume    41