Information report for Lsa005399
Gene Details
Functional Annotation
- Refseq: XP_023747092.1 — two-component response regulator ARR2-like isoform X1
- Swissprot: Q940D0 — ARR1_ARATH; Two-component response regulator ARR1
- TrEMBL: A0A2J6JLT7 — A0A2J6JLT7_LACSA; Two-component response regulator
- STRING: Solyc05g054390.2.1 — (Solanum lycopersicum)
- GO:0000160 — Biological Process — phosphorelay signal transduction system
- GO:0003677 — Molecular Function — DNA binding
- GO:0003700 — Molecular Function — transcription factor activity, sequence-specific 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: Achn103181
- Capsicum annuum: CA05g18380
- Citrullus lanatus: Cla021770
- Cucumis melo: MELO3C006693P1
- Cucumis sativus: Cucsa.252760.1
- Nicotiana benthamiana: Niben101Scf08782g02018.1, Niben101Scf02066g04005.1
- Nicotiana tabacum: XP_016481337.1, XP_016481338.1, XP_016486380.1
- Petunia inflata: Peinf101Scf02621g01040.1
- Salvia miltiorrhiza: SMil_00008695-RA_Salv
- Sesamum indicum: XP_011100814.1, XP_011100813.1, XP_011100812.1
- Solanum lycopersicum: Solyc05g054390.2.1
- Solanum tuberosum: PGSC0003DMP400040747
- Vitis vinifera: GSVIVT01035051001
Sequences
CDS Sequence:
- >Lsa005399|Lactuca_sativa|ARR-B|gnl|UG|Lsa#S58687962;PUT-187a-Lactuca_sativa-36813
ATGATGCTTGGTTCAAGTTGTGCTTCTTGGAAACCCGCCGGCGCCGGCGCCGGAACTGTACCTGACCAGTTTCCGGCAGGTCTCCGGGTGCTTGTTGTTGATGACGACCCGACTTGTCTCATGATTTTAGAGAAGATGCTAAAAAACTGCAATTATGAAGCAACGATATGCAATAGAGCTGAAATCGGTTTATCGTTATTGAGAGAAAACAAAAACGGACATGATATAGTTCTAAGCGATGTTCATATGCCGGACATGGATGGATTCAAACTCCTTGAACATATCGGACTCGAAATGGACCTCCCCGTTATCATGATGTCGGCCGACGACAGCAACAGTGTGGTCATGAAAGGCGTCACTCATGGCGCCTGTGATTATCTCATAAAACCTGTTCGTATCGAAGCTTTGCGTAATATATGGCAACATGTCGTACGAAAACGAAAACACGAATGGAAAGATTTCGAGCCGGAAGCAAGTCCCGACGTCGCCGCCGCTGATGCCGCTGACCAACACCAAAAAGTACCAGAAGATATTGACTATTCGTCATCGGCAAACGAAGAACGTAATTGGAAAAATTCAAAGCGGAAGAAAGATGATGAAGATGAAGCTGAAGCTGATGCAGAAGAACGAGACGAATCTTCTTCTTTGAAAAAACCTCGCGTCGTGTGGTCCGTCGAGCTTCATCAACAGTTCGTCGCCGCCGTTAATCAGCTCGGAATCGACAAAGCTGTCCCGAAGAGAATCCTGGAGCTGATGAACGTTCCCGGCCTAACTAGAGAAAACGTCGCCAGCCATCTTCAGAAATACCGGCTTTATCTCCGGCGACTCAGCTCTTCGCAGCATCTGGGGTCGACGTTCCTCGGCAGCCCTGATGGAGGCTTTGCGTCAATGACGTCATTCACCGCCGGCCAATTCCAATCGGCAGTTCTTGCTCGATCAAATAACACAAAATCTCCGATTTCTGTGCCGATGATGGATCAAAGAAACATATTTAATTTCGAAAATCCGAAATTACTTCATGGAATTCCAACAAATATGGAACCGAAACAATTCGTGGGTTTGCAACAATCACAGCAGCAGCAGCAGCTATCATATAATAATCAAATCCTGATTCCAGTCGGTGGTCAAACTCGGTCAAACGGAAACCGGCAACCTGGGAATTACCGAAACGACGACCTTTTGCAATATCCAGAGCAATTCAATCAAGATGACCTCCTAACAGCGATTCTTAAGCAGCAACAGCAAGAGGCGTTTGGATTGCCGGAAAATGAGTTTGGGTTTAACGGACACGGTTTGGATGATCTTCCGGTGTAA
Protein Sequence:
- >Lsa005399|Lactuca_sativa|ARR-B|gnl|UG|Lsa#S58687962;PUT-187a-Lactuca_sativa-36813
MMLGSSCASWKPAGAGAGTVPDQFPAGLRVLVVDDDPTCLMILEKMLKNCNYEATICNRAEIGLSLLRENKNGHDIVLSDVHMPDMDGFKLLEHIGLEMDLPVIMMSADDSNSVVMKGVTHGACDYLIKPVRIEALRNIWQHVVRKRKHEWKDFEPEASPDVAAADAADQHQKVPEDIDYSSSANEERNWKNSKRKKDDEDEAEADAEERDESSSLKKPRVVWSVELHQQFVAAVNQLGIDKAVPKRILELMNVPGLTRENVASHLQKYRLYLRRLSSSQHLGSTFLGSPDGGFASMTSFTAGQFQSAVLARSNNTKSPISVPMMDQRNIFNFENPKLLHGIPTNMEPKQFVGLQQSQQQQQLSYNNQILIPVGGQTRSNGNRQPGNYRNDDLLQYPEQFNQDDLLTAILKQQQQEAFGLPENEFGFNGHGLDDLPV