Plant Transcription Factor Database
Previous version: v3.0
Salix purpurea
NF-YB Family
Species TF ID Description
SapurV1A.0022s0640.1.pNF-YB family protein
SapurV1A.0023s0530.1.pNF-YB family protein
SapurV1A.0023s0530.2.pNF-YB family protein
SapurV1A.0023s0530.3.pNF-YB family protein
SapurV1A.0023s0530.4.pNF-YB family protein
SapurV1A.0023s0530.5.pNF-YB family protein
SapurV1A.0023s0530.6.pNF-YB family protein
SapurV1A.0023s0530.7.pNF-YB family protein
SapurV1A.0038s0180.1.pNF-YB family protein
SapurV1A.0052s0830.1.pNF-YB family protein
SapurV1A.0054s0420.1.pNF-YB family protein
SapurV1A.0066s0420.1.pNF-YB family protein
SapurV1A.0066s0430.1.pNF-YB family protein
SapurV1A.0089s0500.1.pNF-YB family protein
SapurV1A.0089s0540.1.pNF-YB family protein
SapurV1A.0115s0270.1.pNF-YB family protein
SapurV1A.0220s0090.1.pNF-YB family protein
SapurV1A.0220s0120.1.pNF-YB family protein
SapurV1A.0247s0100.1.pNF-YB family protein
SapurV1A.0290s0130.1.pNF-YB family protein
SapurV1A.0301s0160.1.pNF-YB family protein
SapurV1A.0301s0160.2.pNF-YB family protein
SapurV1A.0424s0220.1.pNF-YB family protein
SapurV1A.0465s0260.1.pNF-YB family protein
SapurV1A.0789s0090.1.pNF-YB family protein
SapurV1A.0789s0090.2.pNF-YB family protein
SapurV1A.0789s0090.3.pNF-YB family protein
SapurV1A.0858s0050.1.pNF-YB family protein
SapurV1A.0934s0060.1.pNF-YB family protein
SapurV1A.0934s0060.2.pNF-YB family protein
SapurV1A.0934s0060.3.pNF-YB family protein
SapurV1A.0934s0060.4.pNF-YB family protein
SapurV1A.1034s0070.1.pNF-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