Biphenyltetrols and Dibenzofuranones from Oxidative Coupling of Resorcinols with 4-Alkylpyrocatechols: New Ciues to the Mechanism of Insect Cuticle Sclerotization

1991 ◽  
Vol 74 (6) ◽  
pp. 1205-1212 ◽  
Author(s):  
Merle Miessner ◽  
Orlando Crescenzi ◽  
Alessandra Napolitano ◽  
Giuseppe Prota ◽  
Svend Olav Andersen ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Insect Cuticle ◽  
Cuticle Sclerotization

scholarly journals Cuticular protein with a low complexity sequence becomes cross-linked during insect cuticle sclerotization and is required for the adult molt

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Seulgi Mun ◽  
Mi Young Noh ◽  
Neal T. Dittmer ◽  
Subbaratnam Muthukrishnan ◽  
Karl J. Kramer ◽  
...  
Keyword(s):  
Low Complexity ◽  
Insect Cuticle ◽  
Cuticular Protein ◽  
Cuticle Sclerotization

Insect Cuticle Sclerotization

1992 ◽  
Vol 37 (1) ◽  
pp. 273-302 ◽  
Author(s):  
T L Hopkins ◽  
K J Kramer
Keyword(s):  
Insect Cuticle ◽  
Cuticle Sclerotization

Reconstruction of Chitin-Protein Complexes Using Correlation Averaging Methods: Ovipositor of the Ichneumon Fly Megarhyssa

1980 ◽  
Vol 38 ◽  
pp. 38-39
Author(s):  
L. T. Germinario ◽  
J. Blackwell ◽  
J. Frank
Keyword(s):  
Protein Complexes ◽  
Hexagonal Lattice ◽  
Uranyl Acetate ◽  
Optical Diffraction ◽  
Insect Cuticle ◽  
High Dose ◽  
Wide Angle ◽  
X Ray ◽  
Averaging Methods ◽  
Digital Correlation

This report describes the use of digital correlation and averaging methods 1,2 for the reconstruction of high dose electron micrographs of the chitin-protein complex from Megarhyssa ovipositor. Electron microscopy of uranyl acetate stained insect cuticle has demonstrated a hexagonal array of unstained chitin monofibrils, 2.4−3.0 nm in diameter, in a stained protein matrix3,4. Optical diffraction Indicated a hexagonal lattice with a = 5.1-8.3 nm3 A particularly well ordered complex is found in the ovipositor of the ichneumon fly Megarhyssa: the small angle x-ray data gives a = 7.25 nm, and the wide angle pattern shows that the protein consists of subunits arranged in a 61 helix, with an axial repeat of 3.06 nm5.

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