Plant Transcription factor database - Universität Potsdam
version: 3.0

Populus trichocarpa SBP Family


Cardon et al. 1999: The Arabidopsis thaliana SPL gene family represents a group of structurally diverse genes encoding putative transcription factors found apparently only in plants. The distinguishing characteristic of the SPL gene family is the SBP-box encoding a conserved protein domain of 76 amino acids in length, the SBP-domain, which is responsible for the interaction with DNA. We present here characterisation of 12 members of the SPL gene family. These genes show highly diverse genomic organisations and are found scattered over the Arabidopsis genome. Some SPL genes are constitutively expressed, while transcriptional activity of others is under developmental control. Based on phylogenetic reconstruction, gene structure and expression patterns, they can be divided into subfamilies. In addition to the Arabidopsis SPL genes, we isolated and determined the sequences of three SBP-box genes from Antirrhinum majus and seven from Zea mays.

Members of this family
  SHOULD possess SBP domain

Domain alignments

This family is also present in:


There are 29 gene models in this family

Gene modelDescriptionDomains
179090 gw1.I.7690.1 SBP
179183 gw1.I.7783.1 SBP
197948 gw1.IV.3037.1 SBP
216243 gw1.VII.548.1 SBP
226094 gw1.X.791.1 SBP
235814 gw1.XI.3794.1 SBP
245406 gw1.XIV.2149.1 SBP
263406 gw1.107.39.1 SBP
267542 gw1.129.152.1 SBP
274234 gw1.164.76.1 SBP
286316 gw1.40.76.1 SBP
286321 gw1.40.81.1 SBP
298307 gw1.8978.5.1 SBP
409154 gw1.II.489.1 SBP
412443 gw1.II.3778.1 SBP
415293 gw1.III.2396.1 SBP
560022 eugene3.00051637 SBP
570289 eugene3.00120942 SBP
576281 eugene3.00160416 SBP
647067 grail3.0047015901 SBP
656549 grail3.0010026901 SBP
656553 grail3.0010027301 SBP
733659 estExt_Genewise1_v1.C_LG_XV2187 SBP
743829 estExt_Genewise1_v1.C_1240186 SBP
755123 fgenesh4_pg.C_LG_II001303 SBP
769914 fgenesh4_pg.C_LG_X001404 SBP
798319 fgenesh4_pm.C_LG_II000008 SBP
832886 estExt_fgenesh4_pm.C_LG_VIII0830 SBP zf-NADH-PPase
833398 estExt_fgenesh4_pm.C_LG_X0096 SBP zf-NADH-PPase

General references

Guo, AY; Zhu, QH; Gu, X; Ge, S; Yang, J; Luo, J. 2008. Genome-wide identification and evolutionary analysis of the plant specific SBP-box transcription factor family. Gene 418(1-2):1-8 PUBMEDID:18495384
Klein, J; Saedler, H; Huijser, P. 1996. A new family of DNA binding proteins includes putative transcriptional regulators of the Antirrhinum majus floral meristem identity gene SQUAMOSA. Mol. Gen. Genet. 250(1):7-16 PUBMEDID:8569690