Gene Details:

• Gene ID: AT1G78600.2
• Gene Name: BBX22, DBB3, LZF1, STH3
• Gene Family: DBB Family
• Description: DBB Family protein
• Species: Arabidopsis thaliana
• Source: DBB family gene from PlantTFDB

Protein Features:

• SMART:  SM00336
• PROSITE profile:  PS50119
• Pfam:  PF00643
• SuperFamily:  SSF57845
• InterPro:  IPR000315

Annotation Proteins:

• Refseq:  NP_001185428.1  — light-regulated zinc finger protein 1
• Swissprot:  Q9SYM2  — BBX22_ARATH; B-box zinc finger protein 22
• TrEMBL:  F4IBS4  — F4IBS4_ARATH; Light-regulated zinc finger protein 1
• STRING:  AT1G78600.2  — (Arabidopsis thaliana)

Gene Ontology:

• GO:0006355  — Biological Process — regulation of transcription, DNA-templated
• GO:0009641  — Biological Process — shade avoidance
• GO:0009658  — Biological Process — chloroplast organization
• GO:0009718  — Biological Process — anthocyanin-containing compound biosynthetic process
• GO:0010099  — Biological Process — regulation of photomorphogenesis
• GO:0015995  — Biological Process — chlorophyll biosynthetic process
• GO:0016607  — Cellular Component — nuclear speck
• GO:0000989  — Molecular Function — transcription factor activity, transcription factor binding
• GO:0003700  — Molecular Function — transcription factor activity, sequence-specific DNA binding
• GO:0005515  — Molecular Function — protein binding
• GO:0008270  — Molecular Function — zinc ion binding

Family Introduction:

• In this study, a small subfamily of double B-box zinc finger (DBB, DOUBLE B-BOX) genes, encoding eight putative transcription factors, were characterized with reference to the circadian rhythm and the early photomorphogenic regulation of hypocotyl elongation in response to light signals. Among these, it was found that the transcriptions of five DBB genes were under the control of circadian rhythm. To gain insight into the physiological roles of these putative transcription factors, forward and reverse genetic studies were carried out. The results suggested that they are commonly implicated in light signal transduction during early photomorphogenesis, however, their functions are not totally redundant, as judged by the fact that their circadian-expression profiles (or phases) were distinctive from each other, and by the fact that some DBBs (named DBB1a, DBB1b, STO, and STH) were apparently implicated in light signal transduction in a negative manner, whereas another (named DBB3) was implicated in a positive manner with regard to light-induced inhibition of elongation of hypocotyls.

Literature:

• The common function of a novel subfamily of B-Box zinc finger proteins with reference to circadian-associated events in Arabidopsis thaliana.   DOI:  10.1104/pp.102.016188 ;  PMID:  18540109

Sequences: