Evidence map›Paper›PMID 18824233›Full record

ArticleProtein expression and purification2009

High-throughput T7 LIC vector for introducing C-terminal poly-histidine tags with variable lengths without extra sequences.

Jonas Lee, Sung-Hou Kim

Open access · greenAbstract read
In one paragraph

Article in Protein expression and purification, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Tagging Recombinant Proteins to Enhance Solubility and Aid Purification.Methods in molecular biology (Clifton, N.J.) · 2023
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  16. Cleavable C-terminal His-tag vectors for structure determination.Journal of structural and functional genomics · 2010
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  17. Crystallization and preliminary X-ray analysis of neoagarobiose hydrolase from Saccharophagus degradans 2-40.Acta crystallographica. Section F, Structural biology and crystallization communications · 2009
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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

2 authors at 2 institutions in 1 country.

Jonas LeeDepartment of Chemistry, University of California, Berkeley, California 94720-5230, USA.
Sung-Hou Kim
Lawrence Berkeley National Laboratory · USUniversity of California, Berkeley · US

Funding

Target Selection, Structure Analysis and Data ManagementP50GM062412 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI KIM, SUNG-HOU · 2000 to 2005
$32.5M
NIGMS NIH HHS GM 62412NIGMS NIH HHS P50 GM062412
6 · The paper itself

Abstract

Immobilized metal ion affinity chromatography (IMAC) has become one of the most popular protein purification methods for recombinant proteins with a hexa-histidine tag (His-tag) placed at the C- or N-terminus of proteins. Nevertheless, there are always difficult proteins that show weak binding to the metal chelating resin and thus low purity. These difficulties are often overcome by increasing the His-tag to 8 or 10 histidines. Despite their success, there are only few expression vectors available to easily clone and test different His-tag lengths. Therefore, we have modified Escherichia coli T7 expression vector pET21a to accommodate ligation-independent cloning (LIC) that will allow easy and efficient parallel cloning of target genes with different His-tag lengths using a single insert. Unlike most LIC vectors available commercially, our vectors will not translate unwanted extra sequences by engineering the N-terminal linker to anneal before the open reading frame, and the C-terminal linker to anneal as a His-tag.

Indexed as

Cloning, MolecularGenetic VectorsHistidineBacteriophage T7Base SequenceChromatography, AffinityEscherichia coliMolecular Sequence DataOligopeptidesProtein BiosynthesisRecombinant Fusion ProteinsSolubilityHis-His-His-His-His-HisHistidineOligopeptidespolyhistidineRecombinant Fusion Proteins

Identifiers

PMID18824233
PMCPMC2613293
OpenAlexW2062751709

What OpenQuestion holds

Textmetadata
LicenceTDM
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.