Plant Transcription factor database - Universität Potsdam
version: 3.0

Populus trichocarpa CPP Family


Cvitanich et al. 2000:Nodulin genes are specifically expressed in the nitrogen-fixing root nodules. We have identified a novel type of DNA-binding protein (CPP1) interacting with the promoter of the soybean leghemoglobin gene Gmlbc3. The DNA-binding domain of CPP1 contains two similar Cys-rich domains with 9 and 10 Cys, respectively. Genes encoding similar domains have been identified in Arabidopsis thaliana, Caenorhabditis elegans, the mouse, and human. The domains also have some homology to a Cys-rich region present in some polycomb proteins. The cpp1 gene is induced late in nodule development and the expression is confined to the distal part of the central infected tissue of the nodule. A constitutively expressed cpp1 gene reduces the expression of a Gmlbc3 promoter-gusA reporter construct in Vicia hirsuta roots. These data therefore suggest that CPP1 might be involved in the regulation of the leghemoglobin genes in the symbiotic root nodule.

Members of this family
  SHOULD possess CXC domain

Domain alignments

This family is also present in:


There are 12 gene models in this family

Gene modelDescriptionDomains
261908 gw1.XVIII.2449.1 CXC
553658 eugene3.00030291 CXC
571010 eugene3.00130374 CXC
578182 eugene3.00180406 CXC
595447 eugene3.00700088 CXC
751483 fgenesh4_pg.C_LG_I001086 CXC
751807 fgenesh4_pg.C_LG_I001410 CXC
763473 fgenesh4_pg.C_LG_VI001783 CXC
778925 fgenesh4_pg.C_LG_XVIII000293 CXC
785914 fgenesh4_pg.C_scaffold_157000024 CXC
795308 fgenesh4_pg.C_scaffold_16858000001 CXC
820773 estExt_fgenesh4_pg.C_LG_VIII1381 CXC

General references

Cvitanich, C; Pallisgaard, N; Nielsen, KA; Hansen, AC; Larsen, K; Pihakaski-Maunsbach, K; Marcker, KA; Jensen, EO. 2000. CPP1, a DNA-binding protein involved in the expression of a soybean leghemoglobin c3 gene. Proc. Natl. Acad. Sci. U.S.A. 97(14):8163-8 PUBMEDID:10859345