Team:Fatih Turkey/Reflectin
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<td width="826" height="61" align="center" valign="top"><p align="justify" class="style6"> Many cephalopods(squid, cuttlefish, octopus) exhibit remarkable dermal iridescence (more than meets the eye), a component of their complex,dynamic camouflage and communication. In the species Euprymna scolopes, the light organ iridescence is static and is due to reflectin protein-based platelets assembled into lamellar thin-film reflectors called iridosomes, contained within iridescent cells called iridocytes.<br /> | <td width="826" height="61" align="center" valign="top"><p align="justify" class="style6"> Many cephalopods(squid, cuttlefish, octopus) exhibit remarkable dermal iridescence (more than meets the eye), a component of their complex,dynamic camouflage and communication. In the species Euprymna scolopes, the light organ iridescence is static and is due to reflectin protein-based platelets assembled into lamellar thin-film reflectors called iridosomes, contained within iridescent cells called iridocytes.<br /> | ||
- | + | Reflectin hierarchical protein assembly is necessity for the responsive, tunable optical function of iridosome cells. This protein assembly can be triggered by chemical stimulation and that assembly can be reversible and fine-tuned.<br /> | |
Namely reflectin proteins were identified as the major biomaterial component of iridosomes. The RA1 gene in The Rainbow Graveyard Project was artificially synthesized into pBluescript to transform into E. coli. In addition, Kramer et al. (2007) isolated <span class="style6">reflectin proteins exhibit unusual solubility and selfassociation properties.<br /> | Namely reflectin proteins were identified as the major biomaterial component of iridosomes. The RA1 gene in The Rainbow Graveyard Project was artificially synthesized into pBluescript to transform into E. coli. In addition, Kramer et al. (2007) isolated <span class="style6">reflectin proteins exhibit unusual solubility and selfassociation properties.<br /> | ||
Self-association of RA1 is likely to stem from a combination of electrostatic and weak aromatic interactions. Reflectins are, indeed, characterized by their high content of polar aromatic residues and arginines, and several lines of evidence suggest that they are intrinsically unstructured, with no likely transmembrane, alphahelix or beta-sheet regions. E. scolopes reflectins also have high arginine, hydrophobic aromatic content and ‘methionine-rich membrane-associated proteins’. It’s demonstrated that they have a high affinity for assembly with microsomal membranes.<br /> | Self-association of RA1 is likely to stem from a combination of electrostatic and weak aromatic interactions. Reflectins are, indeed, characterized by their high content of polar aromatic residues and arginines, and several lines of evidence suggest that they are intrinsically unstructured, with no likely transmembrane, alphahelix or beta-sheet regions. E. scolopes reflectins also have high arginine, hydrophobic aromatic content and ‘methionine-rich membrane-associated proteins’. It’s demonstrated that they have a high affinity for assembly with microsomal membranes.<br /> |
Revision as of 07:01, 14 August 2011
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