Squamosa promoter binding protein
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| SBP | |||||||
|---|---|---|---|---|---|---|---|
 Solution structure of the DNA-binding domain of Squamosa promoter binding protein-like 4 | |||||||
| Identifiers | |||||||
| Symbol | SBP | ||||||
| Pfam | PF03110 | ||||||
| InterPro | IPR004333 | ||||||
| PROSITE | PDOC00798 | ||||||
| SCOP2 | 2lao / SCOPe / SUPFAM | ||||||
| TCDB | 3.A.1 | ||||||
| |||||||
The SQUAMOSA promoter binding protein-like (SBP or SPL) family of transcription factors are defined by a plant-specific DNA-binding domain. The founding member of the family was identified based on its specific in vitro binding to the promoter of the snapdragon SQUAMOSA gene.[1] SBP proteins are thought to be transcriptional activators.
SPB proteins have roles in leaf development, vegetative phase change, flower and fruit development, plant architecture, sporogenesis, Gibberelic acid signaling and toxin response.[2]
