Table 1.
Proteins involved in the response to day length in Arabidopsis
| Proteins | Putative biochemical function | References |
|---|---|---|
| EARLY FLOWERING3 (ELF3) | Nuclear protein proposed to act as a transcriptional activator | McWatters et al (2000), Hicks et al (2001) and Liu et al (2001b) |
| TIMING OF CHLOROPHYLL A/B BINDING PROTEIN1 (TOC1) | N-terminus is similar to the receiver domain of bacterial response regulators; C-terminus is the plant-specific CCT domain | Strayer et al (2000) |
| LATE ELONGATED HYPOCOTYL (LHY) | Myb domain DNA binding | Schaffer et al (1998) and Wang and Tobin (1998) |
| CIRCADIAN CLOCK ASSOCIATED1 (CCA1) | Myb domain DNA binding | Schaffer et al (1998) and Wang and Tobin (1998) |
| CONSTANS (CO) | Nuclear protein containing two B-box zinc fingers; C-terminus CCT domain | Putterill et al (1995) and Robson et al (2001) |
| GIGANTEA (GI) | Nuclear protein of unknown function | Fowler et al (1999) and Park et al (1999) |
| FLOWERING LOCUS T (FT) | Homology to RAF kinase inhibitor | Kardailsky et al (1999) and Kobayashi et al (1999) |
| SUPPRESSOR OF OVEREXPRESSION OF CONSTANS (SOC1) | MADS box transcription factor | Borner et al (2000), Lee et al (2000) and Samach et al (2000) |
| CRYPTOCHROME 2 (CRY2) | Blue light photoreceptor involved in the post-transcriptional regulation of CO | El-Assal et al (2001), Yanovsky and Kay (2003) and Valverde et al (2004) |
| PHYTOCHROME A (PHYA) | Red/far-red light photoreceptor involved in the post-transcriptional regulation of CO | Yanovsky and Kay (2002), Johnson et al (1994) and Valverde et al (2004) |
| PHYTOCHROME B (PHYB) | Red light photoreceptor regulating the degradation of CO protein at dawn | Guo et al (1998), Yanovsky and Kay (2002), Cerdan and Chory (2003) and Valverde et al (2004) |
| FLAVIN-BINDING, KELCH REPEAT, F-BOX (FKF1) | Photoreceptor required to increase CO transcription at dusk | Imaizumi et al (2003) |