Plant Transcription factor database - Universität Potsdam
version: 3.0

Zea mays RWP-RK Family


Schauser et al. 2005: Genetic studies in Lotus japonicus and pea have identified Nin as a core symbiotic gene required for establishing symbiosis between legumes and nitrogen fixing bacteria collectively called Rhizobium. Sequencing of additional Lotus cDNAs combined with analysis of genome sequences from Arabidopsis and rice reveals that Nin homologues in all three species constitute small gene families. In total, the Arabidopsis and rice genomes encode nine and three NIN-like proteins (NLPs), respectively. We present here a bioinformatics analysis and prediction of NLP evolution. On a genome scale we show that in Arabidopsis, this family has evolved through segmental duplication rather than through tandem amplification. Alignment of all predicted NLP protein sequences shows a composition with six conserved modules. In addition, Lotus and pea NLPs contain segments that might characterize NIN proteins of legumes and be of importance for their function in symbiosis. The most conserved region in NLPs, the RWP-RK domain, has secondary structure predictions consistent with DNA binding properties. This motif is shared by several other small proteins in both Arabidopsis and rice. In rice, the RWP-RK domain sequences have diversified significantly more than in Arabidopsis. Database searches reveal that, apart from its presence in Arabidopsis and rice, the motif is also found in the algae Chlamydomonas and in the slime mold Dictyostelium discoideum. Thus, the origin of this putative DNA binding region seems to predate the fungus-plant divide.

Members of this family
  SHOULD possess RWP-RK domain

Domain alignments

This family is also present in:


There are 32 gene models in this family

Gene modelDescriptionDomains
GRMZM2G004663_P01 RWP-RK
GRMZM2G012329_P01 PB1 RWP-RK
GRMZM2G012986_P01 PB1 RWP-RK
GRMZM2G012986_P02 PB1 RWP-RK
GRMZM2G027830_P01 RWP-RK
GRMZM2G031398_P01 PB1 RWP-RK
GRMZM2G031398_P02 PB1 RWP-RK
GRMZM2G035447_P01 RWP-RK
GRMZM2G042278_P01 PB1 RWP-RK
GRMZM2G046168_P01 RWP-RK
GRMZM2G048582_P01 PB1 RWP-RK
GRMZM2G048689_P01 RWP-RK
GRMZM2G057131_P01 RWP-RK
GRMZM2G057131_P02 RWP-RK
GRMZM2G057131_P03 RWP-RK
GRMZM2G057131_P04 RWP-RK
GRMZM2G071322_P01 RWP-RK
GRMZM2G071422_P01 PB1 RWP-RK
GRMZM2G071422_P02 PB1 RWP-RK
GRMZM2G077133_P01 PB1 RWP-RK
GRMZM2G094550_P01 RWP-RK
GRMZM2G105004_P01 PB1 RWP-RK
GRMZM2G105004_P02 PB1 RWP-RK
GRMZM2G105641_P01 RWP-RK
GRMZM2G109509_P01 PB1 RWP-RK
GRMZM2G109509_P02 PB1 RWP-RK
GRMZM2G157653_P01 PB1 RWP-RK
GRMZM2G157653_P02 PB1 RWP-RK
GRMZM2G172331_P01 PB1 RWP-RK
GRMZM2G175175_P01 PB1 RWP-RK
GRMZM2G175175_P02 PB1 RWP-RK
GRMZM2G176655_P01 PB1 RWP-RK

General references

Schauser, L; Roussis, A; Stiller, J; Stougaard, J. 1999. A plant regulator controlling development of symbiotic root nodules. Nature 402(6758):191-5 PUBMEDID:10647012