Genes organ identity

Jhaveri D., Sen A., Reddy G. V. and Rodrigues V. (2000a) Sense organ identity in the Drosophila antenna is specified by the expression of the proneural gene atonal. Mechanisms Develop. 99, 101-111. 

In contrast to the high sequence identity of the type I IFNs, IL-10, IL-19, IL-20, IL-22, IL-24, and IL-26 share only about 25% amino acid sequence identity with each other. This group of molecules is referred to as the IL-10 family based on sequence identity and a common gene structure consisting of five exons (Kotenko, 2002). Despite having a different gene organization (4 exons) and almost no sequence identity with IL-10, structural... 

Figure 5 Violacein (18) and deoxyviolacein (19) are produced by a blue clone that was found in a soil DNA library hosted in Escherichia coii. A four-gene cluster iyioA-D) captured on this clone is responsible for the biosynthesis of both metabolites (GenBank accession No AF367409). The eDNA-derived biosynthetic gene cluster and the violacein biosynthetic gene cluster sequenced from the cultured bacterium Chromobacterium violaceum have the same gene organization but show low amino acid sequence identity. ...

A EXPERIMENTAL FIGURE 15-26 Mutations in floral organ-identity genes produce homeotic phenotypes. 

To test whether these patterns of expression are functionally important, scientists produced transgenic Arabidopsis plants in which floral organ-identity genes were expressed in inappropriate whorls. For instance, the introduction of a transgene carrying class B genes linked to an A-... 

Sequencing of floral organ-identity genes has revealed that many encode proteins belonging to the MADS family of transcription factors, which form homo- and heterodimers. Thus floral-organ identity may be specified by a combinatorial mechanism in which differences in the activities of different homo- and heterodimeric forms of various A, B, and C proteins regulate the expression of subordinate downstream genes necessary for the formation of the differ-... 

A EXPERIMENTAL FIGURE 15-28 Expression patterns of class A, B, and C genes support the ABC model of floral organ specification. Depicted here are the observed expression patterns of the floral organ-identity genes in wild-type, mutant, and transgenic Arabidopsis. Colored bars represent the A, B, and... 

Grimsby, J., Chen, K., Wang, L.-J., Lan, N.C. and Shih, J.C. (1991) Human monoamine oxidase A and B genes exhibit identical exon-intron organization. Proc. Natl. Acad. Sci. USA 88 3637-3641. 

Wisman, E. andYanofsky, M. F. (2000). B and C floral organ identity functions require SEPALLATA MADS-box genes. Nature, 405, 200-203. 

Xu, Y. et al. (2006) Floral organ identity genes in the orchid Dendmbium crumenatum. Plant J. 46, 54-68... 

Clone Genetically identical copy (of a gene, cell or organism)... 

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