Protein Information

Name RIB1
Synonyms HP RNase; Ribonuclease; Ribonuclease A; Pancreatic ribonuclease; Pancreatic ribonuclease precursor; RIB 1; RIB1; RNASE1…

Compound Information

Name kinetin
CAS

Reference List

PubMed Abstract RScore(About this table)
8580766 Andersen BR, Jin G, Chen R, Ertl JR, Chen CM: Transcriptional regulation of hydroxypyruvate reductase gene expression by cytokinin in etiolated pumpkin cotyledons. Planta. 1996;198(1):1-5.


An antisense HPR RNA was prepared for RNase protection analysis of HPR-mRNA expression patterns in the cotyledons of dark-grown pumpkin seedlings.
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16657437 Shibaoka H, Thimann KV: Antagonisms between Kinetin and Amino Acids: Experiments on the Mode of Action of Cytokinins. Plant Physiol. 1970 Aug;46(2):212-220.

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3695590 Srivastava BI: Polyamine changes during senescence and tumorogenesis in plants. Mech Ageing Dev. 1987 Sep 14;40(1):17-30.

No significant consistent changes in the amounts of above polyamines, except perhaps decline in spermidine, were noted during senescence of intact or excised first seedling leaves of barley and this spermidine decline was suppressed during retardation of senescence of excised leaves by 10 mg/l kinetin in the dark.
Both spermine and spermidine (approx. 10 mM) inhibited RNase and DNase activities but stimulated phosphodiesterase activity (assayed with bis-p-nitrophenyl phosphate as substrate) in crude soluble extracts from barley leaves.
1(0,0,0,1) Details
16661914 Keith B, Foster NA, Bonettemaker M, Srivastava LM: In Vitro Gibberellin A (4) Binding to Extracts of Cucumber Hypocotyls. Plant Physiol. 1981 Aug;68(2):344-348.

Binding assays performed with cytosol that had been preheated or incubated with protease, DNase, RNase, or phospholipase A or C indicated that heat and protease treatments disrupted the binding, which suggests that binding occurred to a protein.
Equilibrium dialysis of a protein-enriched fraction prepared by ammonium sulfate precipitation also indicated binding of [(3) H] GA (4) to macromolecular components. [(3) H] GA (4) binding was pH-sensitive, saturable, reversible, and significantly affected by biologically active gibberellins, but not by inactive gibberellins or other plant hormones such as indoleacetic acid, abscisic acid, or kinetin.
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16658594 Arad SM, Mizrahi Y, Richmond AE: Leaf Water Content and Hormone Effects on Ribonuclease Activity. Plant Physiol. 1973 Nov;52(5):510-512.

Under drought, the pattern of hormonal effects was inverted, with kinetin enhancing RNase activity over and above the activity assayed in abscisic acid-treated leaves.
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16659546 Arad SM, Richmond AE: Leaf Cell Water and Enzyme Activity. Plant Physiol. 1976 Apr;57(4):656-658.

The familiar pattern of effects of these hormones on leaf RNase as well as leaf chlorophyll content was inverted, kinetin effected a relative increase in RNase activity and a decrease in leaf chlorophyll, whereas abscisic acid effected a relative decrease in RNase activity and maintained chlorophyll content.
9(0,0,1,4) Details
15908237 Lobachevska O, Kyjak N, Khorkavtsiv O, Dovgalyuk A, Kit N, Klyuchivska O, Stoika R, Ripetsky R, Cove D: Influence of metabolic stress on the inheritance of cell determination in the moss, Pottia intermedia. Cell Biol Int. 2005 Mar;29(3):181-6.

Chronic metabolic stress caused by long-term growth of autotrophic aposporous protonema on mineral medium with 0.25% of casamino acids and on Murashiga-Skoog (MS) medium with sucrose and phytohormones, as well as by transitory action of high kinetin concentration, have a much stronger influence on the expression of apogamy, than short-term stress treatments with RNase and Pb (2+).
6(0,0,1,1) Details
822281 Beljanski M, Da Cunha MI: Particular small size RNA and RNA fragments from different origins as tumor inducing agents in Datura stramonium. Mol Biol Rep. 1976 Jul;2(6):497-506.

Particular RNA fragments obtained by action of pancreatic ribonuclease on purified RNAs originating from species totally unrelated to Agrobacterium tumefaciens (Escherichia coli, rabbit, monkey) are capable of inducing the formation of transplantable tumorous tissue when introduced at wounded sites in inverted stems of Datura stramonium maintained under axenic conditions on a medium containing auxin and kinetin.
6(0,0,1,1) Details
16659810 Puri J, Tal M: Abnormal Stomatal Behavior and Hormonal Imbalance in flacca, a Wilty Mutant of Tomato: IV. Plant Physiol. 1977 Feb;59(2):173-177.

In addition, ABA caused an increase of the soluble to ribosomal RNA ratio toward the normal value in mutant plants.Contrary to ABA, kinetin increased RNase activity in the mutant under normal humidity and decreased it under high humidity.A similar incorporation of labeled uridine into RNA in normal, mutant, and ABA-treated mutant plants under normal humidity suggests that the difference between mutant and normal plants in respect to total, soluble, and ribosomal RNA results not from a different rate of RNA synthesis but from a different rate of RNA degradation, i.e.
Under normal humidity, RNase activity was much higher in mutant plants in which abscisic acid (ABA) and water content were lower than in the normal plant.
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11115890 Poupart J, Waddell CS: The rib1 mutant is resistant to indole-3-butyric acid, an endogenous auxin in Arabidopsis. Plant Physiol. 2000 Dec;124(4):1739-51.


We propose models in which RIB1 has a function in either IBA transport or response.
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7697294 Yabe N, Takahashi T, Komeda Y: Analysis of tissue-specific expression of Arabidopsis thaliana HSP90-family gene HSP81. Plant Cell Physiol. 1994 Dec;35(8):1207-19.

Northern blot analysis and RNase protection analysis, using gene specific probes, showed that HSP81-2 and -3 mRNA were present in all tissues and abundant in roots, floral bud clusters, and flowers at 22 degrees C.
Exogenous application of various chemicals such as ABA, GA3, kinetin, IAA, NaCl, and mannitol revealed that 10 mM IAA and 0.1 M NaCl significantly enhanced the accumulation of HSP81-2 and -3 transcripts.
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