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1. Thermodynamics of Hierarchical Aggregation in Pigment Dispersions

   https://doi.org/10.1021/acs.langmuir.9b02192  

   Rishi, Kabir; Mulderig, Andrew; Beaucage, Gregory; Vogtt, Karsten; Jiang, Hanqiu (September 2019, Langmuir)

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2. Molecular basis of pigment structural diversity in echinoderms

   https://doi.org/10.1016/j.isci.2024.110834  

   Li, Feng; Lin, Zhenjian; Schmidt, Eric W (September 2024, iScience)
3. Diversity and Evolution of Pigment Types in Marine Synechococcus Cyanobacteria

   https://doi.org/10.1093/gbe/evac035  

   Grébert, Théophile; Garczarek, Laurence; Daubin, Vincent; Humily, Florian; Marie, Dominique; Ratin, Morgane; Devailly, Alban; Farrant, Gregory K; Mary, Isabelle; Mella-Flores, Daniella; et al (April 2022, Genome Biology and Evolution)

   Angert, Esther (Ed.)

   Abstract Synechococcus cyanobacteria are ubiquitous and abundant in the marine environment and contribute to an estimated 16% of the ocean net primary productivity. Their light-harvesting complexes, called phycobilisomes (PBS), are composed of a conserved allophycocyanin core, from which radiates six to eight rods with variable phycobiliprotein and chromophore content. This variability allows Synechococcus cells to optimally exploit the wide variety of spectral niches existing in marine ecosystems. Seven distinct pigment types or subtypes have been identified so far in this taxon based on the phycobiliprotein composition and/or the proportion of the different chromophores in PBS rods. Most genes involved in their biosynthesis and regulation are located in a dedicated genomic region called the PBS rod region. Here, we examine the variability of gene content and organization of this genomic region in a large set of sequenced isolates and natural populations of Synechococcus representative of all known pigment types. All regions start with a tRNA-PheGAA and some possess mobile elements for DNA integration and site-specific recombination, suggesting that their genomic variability relies in part on a “tycheposon”-like mechanism. Comparison of the phylogenies obtained for PBS and core genes revealed that the evolutionary history of PBS rod genes differs from the core genome and is characterized by the co-existence of different alleles and frequent allelic exchange. We propose a scenario for the evolution of the different pigment types and highlight the importance of incomplete lineage sorting in maintaining a wide diversity of pigment types in different Synechococcus lineages despite multiple speciation events. 

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4. Crystalline Organic Pigment-Based Field-Effect Transistors

   https://doi.org/10.1021/acsami.7b03170  

   Zhang, Haichang; Deng, Ruonan; Wang, Jing; Li, Xiang; Chen, Yu-Ming; Liu, Kewei; Taubert, Clinton J.; Cheng, Stephen Z.; Zhu, Yu (June 2017, ACS Applied Materials & Interfaces)
5. Regulation of dynamic pigment cell states at single-cell resolution

   https://doi.org/10.7554/eLife.60388  

   Perillo, Margherita; Oulhen, Nathalie; Foster, Stephany; Spurrell, Maxwell; Calestani, Cristina; Wessel, Gary (August 2020, eLife)

   Cells bearing pigment have diverse roles and are often under strict evolutionary selection. Here, we explore the regulation of pigmented cells in the purple sea urchinStrongylocentrotus purpuratus,an emerging model for diverse pigment function. We took advantage of single cell RNA-seq (scRNAseq) technology and discovered that pigment cells in the embryo segregated into two distinct populations, a mitotic cluster and a post-mitotic cluster.Gcmis essential for expression of several genes important for pigment function, but is only transiently expressed in these cells. We discovered unique genes expressed by pigment cells and test their expression with double fluorescence in situ hybridization. These genes include new members of thefmofamily that are expressed selectively in pigment cells of the embryonic and in the coelomic cells of the adult - both cell-types having immune functions. Overall, this study identifies nodes of molecular intersection ripe for change by selective evolutionary pressures. 

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