Evidence map›Paper›PMID 12750888›Full record

ArticlePlanta2003

Molecular characterization and post-transcriptional regulation of ME1, a type-I ribosome-inactivating protein from Mirabilis expansa.

Ramarao Vepachedu, Harsh Pal Bais, Jorge M Vivanco

Abstract read
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In one paragraph

Article in Planta, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.5field-weighted citation impact, top 38% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 25 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Ramarao VepacheduDepartment of Horticulture and Landscape Architecture, Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins 80523-1173, USA.
Harsh Pal Bais
Jorge M Vivanco
Colorado State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ribosome-inactivating proteins (RIPs) are N-glycosidases that remove a specific adenine from the sarcin/ricin (S/R) loop of the large rRNA, thus arresting protein synthesis at the translocation step. In the present study, ME1, a type-1 RIP, was cloned and sequenced from storage roots of Mirabilis expansa (Ruiz & Pavon). The full-length cDNA sequence of ME1 has 1,129 nucleotides with an open reading frame of 951 nucleotides representing 317 amino acids. Nucleotide analysis revealed that the N-terminal region of ME1 was cleaved, and the mature protein started at amino acid 34. ME1 showed very close similarities to MAP and MAP-4 from Mirabilis jalapa. Southern blot analysis revealed the presence of two homologous genes for ME1 cDNA in M. expansa. Northern blot analysis showed high levels of ME1 transcripts in primary and storage roots. Interestingly, jasmonic acid induced ME1 transcript expression in cell suspension cultures of M. expansa; however, the production of ME1 protein was not enhanced as observed by Western blot analysis. Our data suggest that ME1 has the ability to depurinate its own mRNA, thus inhibiting its translation. These observations suggest a possible mechanism by which ME1 protein levels are post-transcriptionally regulated.

Indexed as

Amino Acid SequenceAnimalsBase SequenceBlotting, SouthernCells, CulturedCloning, MolecularDNA, ComplementaryGene Expression Regulation, PlantMirabilisMolecular Sequence DataPlant ProteinsPlant RootsProtein Processing, Post-TranslationalRabbitsReticulocytesRNA, MessengerDNA, ComplementaryPlant ProteinsRNA, Messenger

Identifiers

PMID12750888
OpenAlexW2105370788

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.