3ogk

Structural highlights

Function

[SKP1A_ARATH] Involved in ubiquitination and subsequent proteasomal degradation of target proteins. Together with CUL1, RBX1 and a F-box protein, it forms a SCF E3 ubiquitin ligase complex. The functional specificity of this complex depends of the type of F-box protein. In the SCF complex, it serves as an adapter that links the F-box protein to CUL1. SCF(UFO) is required for vegetative and floral organ development as well as for male gametogenesis. SCF(TIR1) is involved in auxin signaling pathway. SCF(COI1) regulates responses to jasmonates. SCF(EID1) and SCF(AFR) are implicated in phytochrome A light signaling. SCF(ADO1), SCF(ADO2), SCF(ADO3) are related to the circadian clock. SCF(ORE9) seems to be involved in senescence. SCF(EBF1/EBF2) may regulate ethylene signaling. Plays a role during embryogenesis and early postembryonic development, especially during cell elongation and division. Contributes to the correct chromosome segregation during tetrad formation.^{[1] [2] [3] [4] [5] [6]} [COI1_ARATH] Required for jasmonate-regulated plant fertility and defense processes, and for coronatine and/or other elicitors perceptions/responses. Seems to not be required for meiosis. Required for the regulation of some genes induced by wounding, but not for all. Component of SCF(COI1) E3 ubiquitin ligase complexes, which may mediate the ubiquitination and subsequent proteasomal degradation of target proteins (probably including the ribulose bisphosphate carboxylase small chain 1B RBCS-1B and the histone deacetylase HDA6). These SCF complexes play crucial roles in regulating response to jasmonate, and their interactions with the COP9 signalosome (CSN) appear to be important for their activity. Interacts with TIFY10A and inositol pentakisphosphate to form a high-affinity jasmonates coreceptor. Involved in the regulation of plant gene expression during plant-pathogen interactions with Pseudomonas syringae and Alternaria brassicicola.^{[7] [8] [9] [10] [11] [12] [13] [14] [15]}

References

1. ↑ Zhao D, Yang M, Solava J, Ma H. The ASK1 gene regulates development and interacts with the UFO gene to control floral organ identity in Arabidopsis. Dev Genet. 1999 Sep;25(3):209-23. PMID:10528262 doi:<209::AID-DVG4>3.0.CO;2-O 10.1002/(SICI)1520-6408(1999)25:3<209::AID-DVG4>3.0.CO;2-O
2. ↑ Gray WM, del Pozo JC, Walker L, Hobbie L, Risseeuw E, Banks T, Crosby WL, Yang M, Ma H, Estelle M. Identification of an SCF ubiquitin-ligase complex required for auxin response in Arabidopsis thaliana. Genes Dev. 1999 Jul 1;13(13):1678-91. PMID:10398681
3. ↑ Yang M, Hu Y, Lodhi M, McCombie WR, Ma H. The Arabidopsis SKP1-LIKE1 gene is essential for male meiosis and may control homologue separation. Proc Natl Acad Sci U S A. 1999 Sep 28;96(20):11416-21. PMID:10500191
4. ↑ Zhao D, Yu Q, Chen M, Ma H. The ASK1 gene regulates B function gene expression in cooperation with UFO and LEAFY in Arabidopsis. Development. 2001 Jul;128(14):2735-46. PMID:11526079
5. ↑ Zhao D, Ni W, Feng B, Han T, Petrasek MG, Ma H. Members of the Arabidopsis-SKP1-like gene family exhibit a variety of expression patterns and may play diverse roles in Arabidopsis. Plant Physiol. 2003 Sep;133(1):203-17. PMID:12970487
6. ↑ Liu F, Ni W, Griffith ME, Huang Z, Chang C, Peng W, Ma H, Xie D. The ASK1 and ASK2 genes are essential for Arabidopsis early development. Plant Cell. 2004 Jan;16(1):5-20. Epub 2003 Dec 19. PMID:14688296 doi:10.1105/tpc.017772
7. ↑ Xie DX, Feys BF, James S, Nieto-Rostro M, Turner JG. COI1: an Arabidopsis gene required for jasmonate-regulated defense and fertility. Science. 1998 May 15;280(5366):1091-4. PMID:9582125
8. ↑ Feys B, Benedetti CE, Penfold CN, Turner JG. Arabidopsis Mutants Selected for Resistance to the Phytotoxin Coronatine Are Male Sterile, Insensitive to Methyl Jasmonate, and Resistant to a Bacterial Pathogen. Plant Cell. 1994 May;6(5):751-759. PMID:12244256 doi:10.1105/tpc.6.5.751
9. ↑ Reymond P, Weber H, Damond M, Farmer EE. Differential gene expression in response to mechanical wounding and insect feeding in Arabidopsis. Plant Cell. 2000 May;12(5):707-20. PMID:10810145
10. ↑ Ellis C, Turner JG. A conditionally fertile coi1 allele indicates cross-talk between plant hormone signalling pathways in Arabidopsis thaliana seeds and young seedlings. Planta. 2002 Aug;215(4):549-56. Epub 2002 Jul 4. PMID:12172836 doi:10.1007/s00425-002-0787-4
11. ↑ Xu L, Liu F, Lechner E, Genschik P, Crosby WL, Ma H, Peng W, Huang D, Xie D. The SCF(COI1) ubiquitin-ligase complexes are required for jasmonate response in Arabidopsis. Plant Cell. 2002 Aug;14(8):1919-35. PMID:12172031
12. ↑ Devoto A, Nieto-Rostro M, Xie D, Ellis C, Harmston R, Patrick E, Davis J, Sherratt L, Coleman M, Turner JG. COI1 links jasmonate signalling and fertility to the SCF ubiquitin-ligase complex in Arabidopsis. Plant J. 2002 Nov;32(4):457-66. PMID:12445118
13. ↑ Feng S, Ma L, Wang X, Xie D, Dinesh-Kumar SP, Wei N, Deng XW. The COP9 signalosome interacts physically with SCF COI1 and modulates jasmonate responses. Plant Cell. 2003 May;15(5):1083-94. PMID:12724535
14. ↑ van Wees SC, Chang HS, Zhu T, Glazebrook J. Characterization of the early response of Arabidopsis to Alternaria brassicicola infection using expression profiling. Plant Physiol. 2003 Jun;132(2):606-17. Epub 2003 May 15. PMID:12805591 doi:10.1104/pp.103.022186
15. ↑ He P, Chintamanani S, Chen Z, Zhu L, Kunkel BN, Alfano JR, Tang X, Zhou JM. Activation of a COI1-dependent pathway in Arabidopsis by Pseudomonas syringae type III effectors and coronatine. Plant J. 2004 Feb;37(4):589-602. PMID:14756769
16. ↑ Sheard LB, Tan X, Mao H, Withers J, Ben-Nissan G, Hinds TR, Kobayashi Y, Hsu FF, Sharon M, Browse J, He SY, Rizo J, Howe GA, Zheng N. Jasmonate perception by inositol-phosphate-potentiated COI1-JAZ co-receptor. Nature. 2010 Nov 18;468(7322):400-5. Epub 2010 Oct 6. PMID:20927106 doi:10.1038/nature09430