Evidence map›Paper›PMID 28000673›Full record

ArticleScientific reports2016

The Crystal Structure of Monovalent Streptavidin.

Min Zhang, Sangita Biswas, Wenbin Deng, Hongjun Yu

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

6 citing papers in PubMed, 11 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 2 institutions in 2 countries.

Min ZhangMedical College, Hubei University of Arts and Science, Xiangyang, Hubei, China.
Sangita BiswasDepartment of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, CA, USA.
Wenbin DengDepartment of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, CA, USA.
Hongjun YuDepartment of Biology, Brookhaven National Lab, NY, USA.
University of California, Davis · USBrookhaven National Laboratory · US

Funding

Regenerating CNS white matter using induced pluripotent stem cellsR01HD087566 · NICHD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI DENG, WENBIN · 2016 to 2020
$1.5M
NICHD NIH HHS R01 HD087566
6 · The paper itself

Abstract

The strong interaction between streptavidin (SA) and biotin is widely utilized in biotechnological applications. A SA variant, monovalent SA, was developed with a single and high affinity biotin-binding site within the intact tetramer. However, its structural characterization remains undetermined. Here, we seek to determine the crystal structure of monovalent SA at 1.7-Å resolution. We show that, in contrast to its 'close-state' in the only wild-type subunit, the L3,4 loops of three Dead SA subunits are free from crystal packing and remain in an 'open state', stabilized by a consistent H-bonding network involving S52. This H-bonding network also applies to the previously reported open state of the wild-type apo-SA. These results suggest that specific substitutions (N23A/S27D/S45A) at biotin-binding sites stabilize the open state of SA L3,4 loop, thereby further reducing biotin-binding affinity. The general features of the 'open state' SA among different SA variants may facilitate its rational design. The structural information of monovalent SA will be valuable for its applications across a wide range of biotechnological areas.

Indexed as

Binding SitesBiotinCrystallography, X-RayModels, MolecularProtein ConformationStreptavidinStreptomycesBiotinStreptavidin

Identifiers

PMID28000673
PMCPMC5175265
OpenAlexW2560961264

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.