Table 3. Response Regulators of Arabidopsis

Gene Name	Chrom. Locus^-a	Accession No. (cDNA) -^b	Features^-c	References
ARR3	At1g59940	AB008486	Type A	Imamura et al. 1998
ARR4/IBC7/ATRR1	At1g10470	AB008487	Type A	Imamura et al. 1998, Brandstatter and Kieber 1998, Urao et al. 1998)
ARR5/IBC6/ATRR2	At3g48100	AB008488	Type A	Imamura et al. 1998, Brandstatter and Kieber 1998, Urao et al. 1998)
ARR6	At5g62920	AB008489	Type A	Imamura et al. 1998
ARR7	At1g19050	AB008490	Type A	Imamura et al. 1998
ARR8/ATRR3	At2g41310	AB010917	Type A	Imamura et al. 1999, Urao et al. 1998
ARR9/ATRR4	At3g57040	AB010918	Type A	Imamura et al. 1999, Urao et al. 1998
ARR15	At1g74890	AF305720	Type A	D'Agostino et al. 2000
ARR16	At2g40670	AF305721	Type A	D'Agostino et al. 2000
ARR17	At3g56380	AF305722	Type A	D'Agostino et al. 2000
ARR1	At3g16855 (5' end), At3g16857 (3' end)	AB016471	Type B	Sakai et al. 1998
ARR2	At4g16110	AB016472	Type B	Sakai et al. 1998
ARR10/ARP4	At4g31920	AJ005195	Type B	Imamura et al. 1999, Lohrmann et al. 1999
ARR11/ARP3	At1g67710	AJ005194	Type B	Imamura et al. 1999, Lohrmann et al. 1999
ARR12	At2g25180		Type B	Imamura et al. 1999
ARR13	At2g27070		Type B	Imamura et al. 1999
ARR14	At2g01760		Type B	Imamura et al. 1999
ARR18	At5g58080		Type B
ARR19	At1g49190		Type B
ARR20	At3g62670		Type B
ARR21	At5g07210		Type B
ARR22	At3g04280
ARR23	At5g62120		missing 5' end
APRR1/TOC1	At5g61380	AB041530	Pseudo, C-motif	Makino et al. 2000, Strayer et al. 2000
APRR3	At5g60100	AB046956	Pseudo, C-motif	Matsushika et al. 2000
APRR5	At5g24470	AB046955	Pseudo, C-motif	Matsushika et al. 2000
APRR7	At5g02810	AB046954	Pseudo, C-motif	Matsushika et al. 2000
APRR9	At2g46790	AB046953	Pseudo, C-motif	Matsushika et al. 2000
APRR2	At4g18020	AB041531	Pseudo, B-motif	Makino et al. 2000
APRR4	At5g49240		Pseudo, B-motif
APRR6	At1g68210		Pseudo, B-motif
APRR8	At4g00760		Pseudo

^-a Chromosome loci are given by the MIPS designation.

^-b Accession numbers are for full-length cDNA sequences reported in the literature.

^-c Whether response regulators are members of the Type-A cytokinin-induced family (Type A) or contain the B-motif (Type B) is indicated. For pseudo-response regulators (Pseudo), the presence of a CONSTANS-motif (C-motif) or B-motif is indicated.