Evidence map›Paper›PMID 15304544›Full record

ArticleNucleic acids research2004

An efficient one-step site-directed and site-saturation mutagenesis protocol.

Lei Zheng, Ulrich Baumann, Jean-Louis Reymond

Abstract readEvaluation Study
In one paragraph

Article in Nucleic acids research, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 616 papers.

0numbers the graph read from it
0cells of the map it votes in
616citing papers in PubMed
–field-weighted citation impact
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

616 citing papers in PubMed.

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  9. Structure of human aldehyde oxidase under tris(2-carboxyethyl)phosphine reducing conditions.Acta crystallographica. Section F, Structural biology communications · 2026
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  12. Structural proteomics reveals the functional docking interface of ferredoxin-NADPThe Plant journal : for cell and molecular biology · 2026
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556 more citing papers are in PubMed but not listed here.

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.

Lei ZhengDepartment of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, CH-3012 Berne, Switzerland.
Ulrich Baumann
Jean-Louis Reymond

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have developed a new primer design method based on the QuickChange site-directed mutagenesis protocol, which significantly improves the PCR amplification efficiency. This design method minimizes primer dimerization and ensures the priority of primer-template annealing over primer self-pairing during the PCR. Several different multiple mutations (up to 7 bases) were successfully performed with this partial overlapping primer design in a variety of vectors ranging from 4 to 12 kb in length. In comparison, all attempts failed when using complete-overlapping primer pairs as recommended in the standard QuickChange protocol. Our protocol was further extended to site-saturation mutagenesis by introducing randomized codons. Our data indicated no specific sequence selection during library construction, with the randomized positions resulting in average occurrence of each base in each position. This method should be useful to facilitate the preparation of high-quality site saturation libraries.

Indexed as

Mutagenesis, Site-DirectedDirected Molecular EvolutionDNA PrimersElectrophoresis, Agar GelGene LibraryPolymerase Chain ReactionProtein EngineeringDNA Primers

Identifiers

PMID15304544
PMCPMC514394

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.