PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Ocimum tenuiflorum
NF-YB Family
Species TF ID Description
Ote100001760011NF-YB family protein
Ote100035960031NF-YB family protein
Ote100039730021NF-YB family protein
Ote100042370111NF-YB family protein
Ote100045400121NF-YB family protein
Ote100071270001NF-YB family protein
Ote100076880061NF-YB family protein
Ote100100370031NF-YB family protein
Ote100133420111NF-YB family protein
Ote100166400021NF-YB family protein
Ote100174420001NF-YB family protein
Ote100178110111NF-YB family protein
Ote100185610101NF-YB family protein
Ote100185610102NF-YB family protein
Ote100210880041NF-YB family protein
Ote100243530121NF-YB family protein
Ote100256430051NF-YB family protein
Ote100263410021NF-YB family protein
Ote100266090011NF-YB family protein
Ote237934390001NF-YB family protein
NF-YB Family Introduction

NF-Y transcription factors are likely found in all eukaryotes and have roles in the regulation of diverse genes (McNabb et al., 1995; Edwards et al., 1998; Maity and de Crombrugghe, 1998; Mantovani, 1999). In mammals, where their biochemistry is well described, the NF-Y transcription factor complex is composed of three unique subunits: NF-YA, NF-YB, and NF-YC. Assembly of the NF-Y heterotrimer in mammals follows a strict, stepwise pattern (Sinha et al., 1995, 1996). Initially, a heterodimer is formed in the cytoplasm between the subunits NF-YB and NF-YC. This dimer then translocates to the nucleus, where the third subunit, NF-YA, is recruited to generate the mature, heterotrimeric NF-Y transcription factor (Frontini et al., 2004; Kahle et al., 2005). Mature NF-Y binds promoters with the core pentamer nucleotide sequence CCAAT, and this can result in either positive or negative transcriptional regulation(Peng and Jahroudi, 2002, 2003; Ceribelli et al., 2008).

As with NF-YA, NF-YB and NF-YC families have well-described subunit interaction and DNA-binding domains ( Kim et al., 1996; Sinha et al., 1996; McNabb et al., 1997; Romier et al., 2003). The conserved regions of NF-YB and NF-YC have structural and amino acid homology to histone fold motifs. Specifically, NF-YB is related to the histone fold motifs of H2B histones, while NF-YC subunits are related to H2A histones (Mantovani, 1999).

Siefers N, Dang KK, Kumimoto RW, Bynum WE 4th, Tayrose G, Holt BF 3rd.
Tissue-specific expression patterns of Arabidopsis NF-Y transcription factors suggest potential for extensive combinatorial complexity.
Plant Physiol, 2009. 149(2): p. 625-41.
PMID: 19019982