Information report for DCAR_003001
Gene Details
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Functional Annotation
- Refseq: XP_017227759.1 — PREDICTED: two-component response regulator ARR12
- Swissprot: A2X1N2 — ORR24_ORYSI; Two-component response regulator ORR24
- TrEMBL: A0A166HSS2 — A0A166HSS2_DAUCS; Uncharacterized protein
- STRING: XP_002515447.1 — (Ricinus communis)
- GO:0000160 — Biological Process — phosphorelay signal transduction system
- GO:0003677 — Molecular Function — DNA binding
Family Introduction
- The Arabidopsis genome codes for 22 response regulators (ARRs), 12 of which contain a Myb-like DNA binding domain called ARRM (type B). The remainder (type A) possess no apparent functional unit other than a signal receiver domain containing two aspartate and one lysine residues (DDK) at invariant positions, and their genes are transcriptionally induced by cytokinins without de novo protein synthesis. The type B members, ARR1 and ARR2, bind DNA in a sequence-specific manner and work as transcriptional activators.
- Here we present evidence that ARR1 mediates a cytokinin signal, probably through its NH2-terminal signal receiver domain, and transactivates ARR6, which is immediately responsive to cytokinins. A paralogous response regulator, ARR2, shows almost identical characteristics to ARR1, suggesting a functional overlap. Residual cytokinin responses observed with the arr1-1 mutant may have been provided by ARR2. In addition to ARR6, other type A member genes, including ARR4, ARR5, ARR7, ARR8, and ARR9, were also activated by DEX at various levels in 35S::ARR1DDK::GR plants, suggesting that all the immediate cytokinin-responsive genes belonging to this group are directly activated by ARR1. Also, other cytokinin-responsive genes whose promoter regions contain the ARR1 recognition sequences are possibly transactivated by ARR1. A screening for ARR1 target genes using transgenic 35S::ARR1-DDK::GR plants will shed light on the whole view of the early cytokinin signal transduction pathway. We conclude that ARR1 is a principal transcription factor-type response regulator that is involved in an early step of cytokinin signal transduction, possibly as a partner of the sensor histidine kinase CRE1.
Literature and News
Gene Resources
Homologs
- Actinidia chinensis: Achn096741
- Citrus sinensis: orange1.1g006057m, orange1.1g005465m
- Juglans regia: WALNUT_00002718-RA
- Manihot esculenta: Manes.16G127500.1.p, Manes.03G010500.1.p, Manes.03G010500.2.p
- Medicago truncatula: Medtr3g106220.1
- Populus trichocarpa: Potri.006G262100.3, Potri.006G262100.4, Potri.006G262100.2, Potri.006G262100.1, Potri.018G021300.2, Potri.018G021300.5, Potri.018G021300.3, Potri.018G021300.6, Potri.018G021300.4, Potri.018G021300.1
- Ricinus communis: 29848.m004559
- Vitis vinifera: GSVIVT01035903001
- Ziziphus jujuba: XP_015884775.1
Sequences
CDS Sequence:
- >DCAR_003001|Daucus_carota|ARR-B|DCAR_003001
ATGACAGTAGATGACAAAATTGATGGTGAAAAAGAGCAATTCCCTGTGGGCATGAGAGTTCTTGCTGTTGATGATGACCCCACTTGTCTTAGGCTCTTGGATACTTTGCTCAGGCGCTGCCAGTACAATGTAACGACCACGAGTCAAGCAGTAGTGGCATTGCAGATGTTAAGGGAAAACAAGAACAAGTTCGACTTAGTTATCAGTGATGTCCATATGCCTGACATGGACGGTTTCAAGCTGCTAGAGCTTGTGGGACTTGAGATGGACTTACCTGTCATAATGTTGTCTGCATATGGTGATACGGAGCTTGTAATGAAAGGTATCAGTCATGGAGCTTCTGATTATTTGCTGAAACCTATTAGAATTGAAGAGCTAAAGAATATATGGCAACATGTAATTAGACGAAAGAAGCTTGAACCAAAGGATTCAAAAAATTCTGATAAGCCTTGTGTCGACTCTGGAGATTCTAGAGAAGGGTTTCAAGGGATCGGAGAACCTGAGCCAAACGGAAAAAATAACAGAAAAAGGAAGGACCAAAATGAGGACGACGATGAAGAGCGTGATGAGAATGGACAGAATGATGATGATCCCTCTATGCAAAAGAAACCTCGGGTTGTGTGGTCTGTAGAGCTGCATCGCAAATTTGTTGCAGCTGTGAATCAGCTAGGTCTAGATAAGGCTGTGCCGAAAAGAATTTTGGATTTGATGAATGTGGAAAATCTTAGTAGGGAGAATAAATATAGGTTATACCTGAAAAGAATCAGTTGCGTAACAAGCCAGCAAGCTAATATGGCTGCAGCTTTAGGAAATGCAGATTCTGCTTTTTTGCGAATGGCCTCTCTAAATGCACTTGGAAATCTTCCTACTATGGATAGTTCTGGGCAGTTTCAGAGTGTAGCTTTTAATTCCTTTTCCCCCAGTAGCGTGCTTGGTAGGTTGAACTCTCCTGCAGGTTTGGGAATTCGTAGCCTCTCTTCTTCAGGAGCGGTTCAATTTGGTCTTGCTCAGAATTCAAGCAGCTCCATAAATGGTACTGCTAATTTTCACTCAGCTCCACAAACAGGAAATCAGAATGGAATACTTTATGGCATGCCAATGTCAACTGAAATACATCAGTTGCCACATAGCAACAATGTAAATTATGGAGTGCTCCCAGTTACCGAATCAATGATTTATACCAATTCCATTAGTTCTTTGGATGGAAAAGTAAATGTCACTGGCCTAAGCAACAGTCAATATTCTGCTTCAGATGGTTTCTCAGATGTGAAAATACATGTTGGTAGTTCAAGCAACGCTTGTTTTGGTATGCCAAATAACTCCCTAGTGGTAGATGGACACCACCTACATTCCCAGGGATTAGGTGGTTCGGTAAATCAATCTCTAGCAACAGCCAACTCCTTGAATTCAGGTTTTTCTTTTCAAATGCCAGATATAGAAAGACGTGGTACTTGGCCAAGTGCTGTTCAGTCATTAGGCGACCAAACAAATTTGCACAGATCAAATGACTGTTTTAGACATACCAGTCCAAGTATTCTGAGAGATAACAGCCTTTTAGTGCCCTTAAATATTGGAAGTGATCCTCATGATGCTTCTTCCTTCACACTAAGACCAACACATGTGCCAGATGGTAACATTGATCTCTTACAATGCCAATCAGCGAGCAGCAACACCCTACAGGGCTGGGGGGACAGTAAACAAGATGCAGTTCCTCATCAGACAAATCTTATAAGCAGCTCAGTGAACTCCTGGCTACCGCAAGGTGTTTCAAGTTCATTCGACCCAAGGTTCAGTAGGTTATTACAAGTGCAGTGTTTATGCCAAGAACTACGTGACATGTCAGATGCAATGGAGTTGGTGTTGATATCAATAACTTCTCTTGAGGCTAATGCTTGGATCAGTGTGACTTTTGCTGATCTGCAGCCGGGACCTCTAACTGCTTAA
Protein Sequence:
- >DCAR_003001|Daucus_carota|ARR-B|DCAR_003001
MTVDDKIDGEKEQFPVGMRVLAVDDDPTCLRLLDTLLRRCQYNVTTTSQAVVALQMLRENKNKFDLVISDVHMPDMDGFKLLELVGLEMDLPVIMLSAYGDTELVMKGISHGASDYLLKPIRIEELKNIWQHVIRRKKLEPKDSKNSDKPCVDSGDSREGFQGIGEPEPNGKNNRKRKDQNEDDDEERDENGQNDDDPSMQKKPRVVWSVELHRKFVAAVNQLGLDKAVPKRILDLMNVENLSRENKYRLYLKRISCVTSQQANMAAALGNADSAFLRMASLNALGNLPTMDSSGQFQSVAFNSFSPSSVLGRLNSPAGLGIRSLSSSGAVQFGLAQNSSSSINGTANFHSAPQTGNQNGILYGMPMSTEIHQLPHSNNVNYGVLPVTESMIYTNSISSLDGKVNVTGLSNSQYSASDGFSDVKIHVGSSSNACFGMPNNSLVVDGHHLHSQGLGGSVNQSLATANSLNSGFSFQMPDIERRGTWPSAVQSLGDQTNLHRSNDCFRHTSPSILRDNSLLVPLNIGSDPHDASSFTLRPTHVPDGNIDLLQCQSASSNTLQGWGDSKQDAVPHQTNLISSSVNSWLPQGVSSSFDPRFSRLLQVQCLCQELRDMSDAMELVLISITSLEANAWISVTFADLQPGPLTA*