PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Spirodela polyrhiza
B3 Family
Species TF ID Description
Spipo0G0020800B3 family protein
Spipo0G0048300B3 family protein
Spipo0G0123100B3 family protein
Spipo0G0151100B3 family protein
Spipo11G0036600B3 family protein
Spipo13G0004800B3 family protein
Spipo16G0014200B3 family protein
Spipo19G0026300B3 family protein
Spipo1G0085000B3 family protein
Spipo20G0007000B3 family protein
Spipo22G0024800B3 family protein
Spipo31G0005500B3 family protein
Spipo5G0031100B3 family protein
Spipo5G0031400B3 family protein
Spipo5G0066100B3 family protein
Spipo7G0001600B3 family protein
Spipo7G0021400B3 family protein
Spipo7G0021500B3 family protein
Spipo7G0022300B3 family protein
Spipo7G0049400B3 family protein
Spipo7G0056800B3 family protein
B3 Family Introduction

The plant-specific B3 superfamily encompasses well-characterized families, such as the auxin response factor (ARF) family and the LAV family, as well as less well understood families, such as RAV and REM.

All members of the B3 superfamily contain an ~ 110 amino acid region called the B3 domain. This domain was initially named because it was the third basic domain in the maize gene VIVIPAROUS1 (VP1). The first and second basic domains (B1 and B2) are specific to the VP1-like proteins, but genes that contain the B3 domain are widespread in plant genomes. The B3 domain of VP1 encodes a sequence-specific DNA binding activity.

Swaminathan K, Peterson K, Jack T.
The plant B3 superfamily.
Trends Plant Sci, 2008. 13(12): p. 647-55.
PMID: 18986826

Note: In plantTFDB, B3 family includes LAV family, REM family, and RAV family (those do not contain AP2 domain).