Early nodulin

A. M. Hirsch, R. V. Bhuvaneswari, J. G. Torrey and T. Bisseling, Early nodulin genes are induced in alfalfa root outgrowths elicited by auxin transport inhibitors. Proc. Natl. Acad. Sci. U.S.A. 86 1244-1248 (1989). 

Early nodulins induced during the infection process and nodule organogenesis... 

Van de Weil, C., Scheres, B., Franssen, H., Van Lierop, M.-J., Van Lammeren, A., Van Kammen, A. Bisseling, T. (1990). The early nodulin transcript ENOD2 is located in the nodule parenchyma (inner cortex) of pea and soybean root nodules. The EMBO Journal 9,1-7. 

The classification of the four subfamilies, stellacyanins, plantacyanins, uclacyanins, and early nodulins, is based (i) on their spectroscopic features, (ii) on precursor as well as mature protein domain organization. 

Taipalensuu, J., Falk, A. and Rask, L. (1996) A wound-and methyl jasmonate-inducible transcript coding for a myrosinase-associated protein with similarities to an early nodulin. Plant Physiol, 110, 483-91. 

It is also important to note that plants house a large group of phytocyanin-related proteins (22 and 24 in Arabidopsis and rice, respectively) that have extensive sequence identity and identical domain architecture to the stellacyanins and uclacyanins but lack the copper-ligating amino acid residues that are crucial for the formation of the type 1 copper site. These copper-free proteins, known as early nodulins, share a common ancestor with metazoan ephrins, which are involved in multiple aspects of embryonal development. ... 

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