Reflectins: The Unusual Proteins of Squid Reflective Tissues

作者：Wendy J. Crookes, Linlin Ding, Qing Huang, Jennifer R. Kimbell, Joseph Horwitz, Margaret McFall‐Ngai · 发表于：Science · 年份：2004 · DOI：10.1126/science.1091288 · 被引用次数：232 · 研究领域：Cephalopods and Marine Biology、Neurobiology and Insect Physiology Research、Diatoms and Algae Research

A family of unusual proteins is deposited in flat, structural platelets in reflective tissues of the squid Euprymna scolopes. These proteins, which we have named reflectins, are encoded by at least six genes in three subfamilies and have no reported homologs outside of squids. Reflectins possess five repeating domains, which are highly conserved among members of the family. The proteins have a very unusual composition, with four relatively rare residues (tyrosine, methionine, arginine, and tryptophan) comprising approximately 57% of a reflectin, and several common residues (alanine, isoleucine, leucine, and lysine) occurring in none of the family members. These protein-based reflectors in squids provide a marked example of nanofabrication in animal systems.