Reviewed, UniProtKB/Swiss-Prot O82798 (ARR4_ARATH)

Names and origin

Protein names

Recommended name:
    Two-component response regulator ARR4
Alternative name(s):
    Response regulator 1

Gene names

Name:	ARR4
Synonyms:	ATRR1, IBC7
Ordered Locus Names:	At1g10470
ORF Names:	T10O24.8

Organism

Arabidopsis thaliana (Mouse-ear cress) [Complete proteome]

Taxonomic identifier

3702 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › eurosids II › Brassicales › Brassicaceae › Arabidopsis

Protein attributes

Sequence length	259 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Functions as response regulator involved in His-to-Asp phosphorelay signal transduction system. Phosphorylation of the Asp residue in the receiver domain activates the ability of the protein to promote the transcription of target genes. Type-A response regulators seem to act as negative regulators of the cytokinin signaling. Modulates red light signaling through its interaction with the phytochrome B photoreceptor.
Subunit structure	Interacts with the phytochrome B photoreceptor.
Subcellular location	NucleusProbable.
Tissue specificity	Predominantly expressed in roots, and stems of young inflorescences.
Induction	By low temperature, dehydration, abscisic acid (ABA), cytokinins (BA and zeatin), nitrate and high salinity.
Post-translational modification	Two-component system major event consists of a His-to-Asp phosphorelay between a sensor histidine kinase (HK) and a response regulator (RR). In plants, the His-to-Asp phosphorelay involves an additionnal intermediate named Histidine-containing phosphotransfer protein (HPt). This multistep phosphorelay consists of a His-Asp-His-Asp sequential transfer of a phosphate group between first an His and an Asp of the HK protein, followed by the transfer to a conserved His of the HPt protein and finally the transfer to an Asp in the receiver domain of the RR protein.
Sequence similarities	Belongs to the ARR family. Type-A subfamily. Contains 1 response regulatory domain.

Ontologies

Keywords
Biological process	Cytokinin signaling pathway Transcription Transcription regulation Two-component regulatory system
Cellular component	Nucleus
PTM	Phosphoprotein
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	cytokinin mediated signaling Inferred from electronic annotation. Source: UniProtKB-KW regulation of transcription, DNA-dependent Inferred from electronic annotation. Source: InterPro two-component signal transduction system (phosphorelay) Inferred from electronic annotation. Source: InterPro
Cellular component	nucleus Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	protein binding Ref.7 Inferred from physical interaction. Source: IntAct two-component response regulator activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Binary interactions

With	Entry	#Exp.	IntAct	Notes
DBP	O80837	3	EBI-625213,EBI-1788073
PHYB	P14713	2	EBI-625213,EBI-300727

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 259	259	Two-component response regulator ARR4		PRO_0000081425
Regions
	Domain	35 – 162	128	Response regulatory
	Compositional bias	179 – 246	68	Ser-rich
Amino acid modifications
	Modified residue	95	1	4-aspartylphosphate By similarity

Sequences

	Sequence		Length	Mass (Da)
	O82798-1 [UniParc]. Last modified November 1, 1998. Version 1. Checksum: 557A4E2DA51948F5	FASTA	259	28,297
	10 20 30 40 50 60 MARDGGVSCL RRSEMMSVGG IGGIESAPLD LDEVHVLAVD DSLVDRIVIE RLLRITSCKV 70 80 90 100 110 120 TAVDSGWRAL EFLGLDNEKA SAEFDRLKVD LIITDYCMPG MTGYELLKKI KESSNFREVP 130 140 150 160 170 180 VVIMSSENVL TRIDRCLEEG AQDFLLKPVK LADVKRLRSH LTKDVKLSNG NKRKLPEDSS 190 200 210 220 230 240 SVNSSLPPPS PPLTISPESS PPLTVSTESS DSSPPLSPVE IFSTSPLSSP IDDEDDDVLT 250 SSSEESPIRR QKMRSPGLD

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Response regulators implicated in His-to-Asp phosphotransfer signaling in Arabidopsis." Imamura A., Hanaki N., Umeda H., Nakamura A., Suzuki T., Ueguchi C., Mizuno T. Proc. Natl. Acad. Sci. U.S.A. 95:2691-2696(1998) [PubMed: 9482949] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, TISSUE SPECIFICITY. Strain: cv. Columbia.
[2]	"Stress-responsive expression of genes for two-component response regulator-like proteins in Arabidopsis thaliana." Urao T., Yakubov B., Yamaguchi-Shinozaki K., Shinozaki K. FEBS Lett. 427:175-178(1998) [PubMed: 9607306] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], TISSUE SPECIFICITY, INDUCTION. Strain: cv. Columbia.
[3]	"Two genes with similarity to bacterial response regulators are rapidly and specifically induced by cytokinin in Arabidopsis." Brandstatter I., Kieber J.J. Plant Cell 10:1009-1019(1998) [PubMed: 9634588] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], TISSUE SPECIFICITY, INDUCTION. Strain: cv. Wassilewskija.
[4]	"Sequence and analysis of chromosome 1 of the plant Arabidopsis thaliana." Theologis A., Ecker J.R., Palm C.J., Federspiel N.A., Kaul S., White O., Alonso J., Altafi H., Araujo R., Bowman C.L., Brooks S.Y., Buehler E., Chan A., Chao Q., Chen H., Cheuk R.F., Chin C.W., Chung M.K. , Conn L., Conway A.B., Conway A.R., Creasy T.H., Dewar K., Dunn P., Etgu P., Feldblyum T.V., Feng J.-D., Fong B., Fujii C.Y., Gill J.E., Goldsmith A.D., Haas B., Hansen N.F., Hughes B., Huizar L., Hunter J.L., Jenkins J., Johnson-Hopson C., Khan S., Khaykin E., Kim C.J., Koo H.L., Kremenetskaia I., Kurtz D.B., Kwan A., Lam B., Langin-Hooper S., Lee A., Lee J.M., Lenz C.A., Li J.H., Li Y.-P., Lin X., Liu S.X., Liu Z.A., Luros J.S., Maiti R., Marziali A., Militscher J., Miranda M., Nguyen M., Nierman W.C., Osborne B.I., Pai G., Peterson J., Pham P.K., Rizzo M., Rooney T., Rowley D., Sakano H., Salzberg S.L., Schwartz J.R., Shinn P., Southwick A.M., Sun H., Tallon L.J., Tambunga G., Toriumi M.J., Town C.D., Utterback T., Van Aken S., Vaysberg M., Vysotskaia V.S., Walker M., Wu D., Yu G., Fraser C.M., Venter J.C., Davis R.W. Nature 408:816-820(2000) [PubMed: 11130712] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Columbia.
[5]	"Expression of Arabidopsis response regulator homologs is induced by cytokinins and nitrate." Taniguchi M., Kiba T., Sakakibara H., Ueguchi C., Mizuno T., Sugiyama T. FEBS Lett. 429:259-262(1998) [PubMed: 9662428] [Abstract] Cited for: INDUCTION.
[6]	"Characterization of the response of the Arabidopsis response regulator gene family to cytokinin." D'Agostino I.B., Deruere J., Kieber J.J. Plant Physiol. 124:1706-1717(2000) [PubMed: 11115887] [Abstract] Cited for: INDUCTION.
[7]	"Interaction of the response regulator ARR4 with phytochrome B in modulating red light signaling." Sweere U., Eichenberg K., Lohrmann J., Mira-Rodado V., Baeurle I., Kudla J., Nagy F., Schaefer E., Harter K. Science 294:1108-1111(2001) [PubMed: 11691995] [Abstract] Cited for: FUNCTION, INTERACTION WITH PHYTOCHROME B.
[8]	"Type-A Arabidopsis response regulators are partially redundant negative regulators of cytokinin signaling." To J.P.C., Haberer G., Ferreira F.J., Deruere J., Mason M.G., Schaller G.E., Alonso J.M., Ecker J.R., Kieber J.J. Plant Cell 16:658-671(2004) [PubMed: 14973166] [Abstract] Cited for: FUNCTION.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AB008487 mRNA. Translation: BAA34726.1. AB010915 mRNA. Translation: BAA31143.1. AF057282 mRNA. Translation: AAC26636.1. AC007067 Genomic DNA. Translation: AAD39568.1.
PIR	T48851.
RefSeq	NP_172517.1.
UniGene	At.22981
3D structure databases
ModBase	Search...
Protein-protein interaction databases
IntAct	O82798.
Genome annotation databases
GeneID	837587.
GenomeReviews	Gene locus AT1G10470 in contig CT485782_GR.
KEGG	ath:AT1G10470.
Organism-specific databases
GeneFarm	4121. 418.
TAIR	At1g10470.
Gene expression databases
ArrayExpress	O82798.
GermOnline	AT1G10470. Arabidopsis thaliana.
Family and domain databases
InterPro	IPR001789. Sig_transdc_resp-reg_receiver. [Graphical view]
Pfam	PF00072. Response_reg. 1 hit. [Graphical view]
ProDom	PD000039. Response_reg. 1 hit. [Graphical view] [Entries sharing at least one domain]
SMART	SM00448. REC. 1 hit. [Graphical view]
PROSITE	PS50110. RESPONSE_REGULATORY. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

ARR4_ARATH

Accession

Primary (citable) accession number: O82798

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 16, 2004
Last sequence update:	November 1, 1998
Last modified:	November 25, 2008
This is version 59 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)