Information report for Achn064521
Gene Details
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Functional Annotation
- TrEMBL: A0A2R6PDS8 — A0A2R6PDS8_ACTCH; Two-component response regulator like
- 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
- Beta vulgaris: Bv3_048080_hfrw.t1, Bv3_048080_hfrw.t2
- Cicer arietinum: XP_012573357.1, XP_004487801.1, XP_004508173.1, XP_004508172.1
- Citrullus lanatus: Cla021770
- Cucumis melo: MELO3C006693P1
- Cucumis sativus: Cucsa.252760.1
- Gossypium arboreum: Cotton_A_17803_BGI-A2_v1.0
- Gossypium hirsutum: Gh_Sca005214G03, Gh_A01G0217
- Juglans regia: WALNUT_00024805-RA, WALNUT_00003762-RA
- Populus trichocarpa: Potri.008G213500.1, Potri.010G001000.4, Potri.010G001000.2, Potri.010G001000.3
- Ricinus communis: 29889.m003245
- Vitis vinifera: GSVIVT01035051001
Sequences
CDS Sequence:
- >Achn064521|Actinidia_chinensis|ARR-B|Achn064521
ATGAAGGGCAAAAATGTAATCCAGTATTTTCCGTTAACAGCATCAAGTTCATTTTTGATTCATATAGATGGAGTGATAACAACCCTTGGTAGAACTCAACCTGAAATCCGGCTTACACAAGGGACTCAAGAGGCTTCACTCACCTATGTTCCAACCGTGTGGATTGCACAGCCACACCCATACAATCCCATTCTCGCGAGGCAGTGGCTCTTCACGCTTCTGCTTCATCTGCCTCAGTGTGTGGCAGTGACTGGAGGATATGATGGTCTTGATTTGGAGATGAACTTGAACGAAAATATACCTAGATCGGAAGTTGATGAATCTGGAGATGTGATTTTGCTTGCCTCTATTGCCATGGCAACAAATTTCAAGCATATCCCAAACTTTTTTGAAAAGAATAAAAAGAAAGAGGAAGAAGATGTTGTACGTCTCTTCATCATCCTGAATCTTATGGGGATGATCAAATCAAATGAGTCTTCTTCTGTTTTTGAGTTTCCGGCGGGTCTTAGGGTTCTTGCTGTTGATGATGATTCCAACTATCTCACACTACTCACAAGCATGCTTCACGATTGTCGTTATAAAGTCACTACATGTTCGCGGGCAAACGAAGCTTTATCGATCCTTCGACAAGGCAAAAGCAATTTCGATATTGTTATAAGTGAGGTACACATCCCCGATATGGATGGATTTCAACTCCTTGAGATCATTTGCTTGGAAATGGACCTTCCTGTTGTCATGATGTCCTCAGACGATGAAAATGGTGTTGTTTTCAAGTGTATTATGGATGGCGCTTGTGATTATTTAGTCAAGCCTGTTCGGATGGAGGATATAAAATTTTTATGGAAGCATGTGATCCGTAAGCAGAAAAATGGTGGTGTTAGGGTTTTAGAGGAATCGAAAAATGTGGATGATGTTGATATATTGTTGCACCAAAATCAGGTAAAAAATGTGGAGAATGTTTCGATAGATAACGAAAATCATGAAAGCTCAAATTATGTAACGGAAGAGGAAGAGGAAGGGAAAGAGAAGGATGATTCGGTGTCACTGAAAAAGCCACGAATGATTTGGACAGCCGAGCTCCATCAAAAATTCGTTGCTGCGGTGGATCAAATCGGCCTCAAAAATGCTGTTCCAAAGAAAATTTTAGATGTCATGAATTTTCCGGGTATTACAAGAGAAAATGTTGCCAGCCATCTTCAGAAATATCGGAACTATATTCGAAGAGTGGATGAGAATTTGCAAAATCAATGCAATTTCAATAAACTTCCAATGCACCCTCAAGAAAAAAATCCTGAATTGATTGCTCATTTTCCCAGTTACAACCTCCATAATCAAGTTACTTTCATTCAACCTACTCAAAGATCTTATGCAAACTTCAGCAACTATACTCCTCTAGTGAACCAGAATAACTTTTACAACTATGGGATGCTAGAATCAGGATTCGGAATTGGATCAGAGCAACTAAGCAATTCCAGCATAGGAGCGGACTTATCTCCAGAAGTTTCAACCACGATGGAATCGGATCAACCCATGTCAATAAATGATTTTTTCCAAGCTTCTGGTGAGCGGTATTTAGACAGATTCAACCCACCTGTTAATGTTAACAGAATCCATGGAAACTTGACAAGCTCTTTTATAATGCAAAGGCCATTTAAGATGCAGAGATTGAATGAAAATAAAAGCACTGAGGTTTTTACGGATGGGGCAGTATATCATCCTGTTTCTCTTTCGCCCCCAGAACTCTACGTTGAACAGTTTGATCACGAGGATGTGAATATTAGACCCTATAATGAGGTCAGTTCATGTGTTTACGTTTCGTCCATTAAAATTTGA
Protein Sequence:
- >Achn064521|Actinidia_chinensis|ARR-B|Achn064521
MKGKNVIQYFPLTASSSFLIHIDGVITTLGRTQPEIRLTQGTQEASLTYVPTVWIAQPHPYNPILARQWLFTLLLHLPQCVAVTGGYDGLDLEMNLNENIPRSEVDESGDVILLASIAMATNFKHIPNFFEKNKKKEEEDVVRLFIILNLMGMIKSNESSSVFEFPAGLRVLAVDDDSNYLTLLTSMLHDCRYKVTTCSRANEALSILRQGKSNFDIVISEVHIPDMDGFQLLEIICLEMDLPVVMMSSDDENGVVFKCIMDGACDYLVKPVRMEDIKFLWKHVIRKQKNGGVRVLEESKNVDDVDILLHQNQVKNVENVSIDNENHESSNYVTEEEEEGKEKDDSVSLKKPRMIWTAELHQKFVAAVDQIGLKNAVPKKILDVMNFPGITRENVASHLQKYRNYIRRVDENLQNQCNFNKLPMHPQEKNPELIAHFPSYNLHNQVTFIQPTQRSYANFSNYTPLVNQNNFYNYGMLESGFGIGSEQLSNSSIGADLSPEVSTTMESDQPMSINDFFQASGERYLDRFNPPVNVNRIHGNLTSSFIMQRPFKMQRLNENKSTEVFTDGAVYHPVSLSPPELYVEQFDHEDVNIRPYNEVSSCVYVSSIKI*