Evidence map›Paper›PMID 8497045›Full record

ArticleJournal of virology1993

Human papillomavirus type 18 E7 protein requires intact Cys-X-X-Cys motifs for zinc binding, dimerization, and transformation but not for Rb binding.

M C McIntyre, M G Frattini, S R Grossman, L A Laimins

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of virology, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
5.8field-weighted citation impact, top 4% 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

55 citing papers in PubMed, 141 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

4 authors at 1 institution in 1 country.

M C McIntyreDepartment of Biochemistry and Molecular Biology, University of Chicago, Illinois 60637.
M G Frattini
S R Grossman
L A Laimins
University of Illinois Chicago · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human papillomavirus type 18 (HPV-18) E7 proteins bind zinc through Cys-X-X-Cys repeats located at the C terminus of the protein. In order to examine the role of these cysteine motifs in E7 function, we expressed the HPV-18 E7 protein in bacteria and found that purified E7 forms a dimer through interactions with zinc. Mutants with single mutations within the Cys-X-X-Cys motifs bound a reduced level of zinc in a zinc blot assay, while a double mutant lost all zinc-binding activity. When expressed in vivo, none of the mutants cooperated with an activated ras oncogene to transform primary rat embryo fibroblasts, but all mutants retained nearly wild-type Rb-binding activity. The results indicate that the cysteine motifs play an important role in transformation by HPV-18 E7 but do not contribute to Rb binding.

Indexed as

Cell Transformation, ViralDNA-Binding ProteinsRepetitive Sequences, Nucleic AcidAdenovirus E1A ProteinsAmino Acid SequenceAnimalsCells, CulturedConserved SequenceCysteineDNA Mutational AnalysisEdetic AcidEscherichia coliHalf-LifeModels, ChemicalMolecular Sequence DataOncogene Proteins, ViralAdenovirus E1A ProteinsCysteineDNA-Binding ProteinsE7 protein, Human papillomavirus type 18Edetic AcidOncogene Proteins, ViralRecombinant ProteinsRetinoblastoma ProteinRubidiumZinc

Identifiers

PMID8497045
PMCPMC237652
OpenAlexW1851271608

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.