Controls photoperiodic flowering response. Component of the circadian clock. Expression of several members of the ARR-like family is controlled by circadian rhythm. The particular coordinated sequential expression of APRR9, APRR7, APRR5, APRR3 and APPR1 result to circadian waves that may be at the basis of the endogenous circadian clock. Positive regulator of CCA1 and LHY expression. AIP1 Timing of CAB expression 1 MFB13.16 MDLNGECKGGDGFIDRSRVRILLCDNDSTSLGEVFTLLSECSYQVTAVKSARQVIDALNAEGPDIDIILAEIDLPMAKGMKMLRYITRDKDLRRIPVIMMSRQDEVPVVVKCLKLGAADYLVKPLRTNELLNLWTHMWRRRRMLGLAEKNMLSYDFDLVGSDQSDPNTNSTNLFSDDTDDRSLRSTNPQRGNLSHQENEWSVATAPVHARDGGLGADGTATSSLAVTAIEPPLDHLAGSHHEPMKRNSNPAQFSSAPKKSRLKIGESSAFFTYVKSTVLRTNGQDPPLVDGNGSLHLHRGLAEKFQVVASEGINNTKQARRATPKSTVLRTNGQDPPLVNGNGSHHLHRGAAEKFQVVASEGINNTKQAHRSRGTEQYHSQGETLQNGASYPHSLERSRTLPTSMESHGRNYQEGNMNIPQVAMNRSKDSSQVDGSGFSAPNAYPYYMHGVMNQVMMQSAAMMPQYGHQIPHCQPNHPNGMTGYPYYHHPMNTSLQHSQMSLQNGQMSMVHHSWSPAGNPPSNEVRVNKLDRREEALLKFRRKRNQRCFDKKIRYVNRKRLAERRPRVKGQFVRKMNGVNVDLNGQPDSADYDDEEEEEEEEEEENRDSSPQDDALGT Pseudo-response regulator 1 ABI3-interacting protein 1 TOC1 APRR1 APRR1_ARATH Two-component response regulator-like APRR1 At5g61380 618