Evidence map›Paper›PMID 38896106›Full record

ArticleCurrent protocols2024

Expression and Purification of Human U1-70K (snRNP70) and its BAD Domains Using an E. coli Expression System.

Trenton M Paul, Shariq Jamal, Ethan Ekpenyong, Peter Prevelige, Talia E Fargason, Zihan Zhang, Jun Zhang

Abstract read
In one paragraph

Article in Current protocols, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Trenton M PaulDepartment of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama.
Shariq JamalDepartment of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama.
Ethan EkpenyongDepartment of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama.
Peter PreveligeDepartment of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama.
Talia E FargasonDepartment of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama.
Zihan ZhangDepartment of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama.ORCID https://orcid.org/0000-0003-1362-4229
Jun ZhangDepartment of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama.ORCID https://orcid.org/0000-0002-5842-7424

Funding

The central roles of SRSF1 in early-stage spliceosome assemblyR35GM147091 · NIGMS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Jun Zhang · 2022 to 2026
$2.0M
NIGMS NIH HHS R35 GM147091
6 · The paper itself

Abstract

U1-70K (snRNP70) serves as an indispensable protein component within the U1 complex, assuming a pivotal role in both constitutive and alternative RNA splicing processes. Notably, U1-70K engages in interactions with SR proteins, instigating the assembly of the spliceosome. This protein undergoes regulation through phosphorylation at multiple sites. Of significant interest, U1-70K has been implicated in Alzheimer's disease, in which it tends to form detergent-insoluble aggregates. Even though it was identified more than three decades ago, our understanding of U1-70K remains notably constrained, primarily due to challenges such as low levels of recombinant expression, susceptibility to protein degradation, and insolubility. In endeavoring to address these limitations, we devised a multifaceted approach encompassing codon optimization, strategic purification, and a solubilization protocol. This methodology has enabled us to achieve a high yield of full-length, soluble U1-70K, paving the way for its comprehensive biophysical and biochemical characterization. Furthermore, we provide a detailed protocol for the preparation of phosphorylated U1-70K. This set of protocols promises to be a valuable resource for scientists exploring the intricate web of U1-70K-related mechanisms in the context of RNA splicing and its implications in neurodegenerative disorders and other disorders and biological processes. © 2024 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Expression and purification of full-length U1-70K from E. coli Support Protocol 1: Making chemically competent BL21 Star pRARE/pBB535 cells Basic Protocol 2: Phosphorylation of full-length U1-70K using SRPK1 Support Protocol 2: Purification of SRPK1 Basic Protocol 3: Expression and purification of U1-70K BAD1 from E. coli Basic Protocol 4: Phosphorylation of U1-70K BAD1 using SRPK1 Basic Protocol 5: Expression and purification of U1-70K BAD2 from E. coli.

Indexed as

Escherichia coliRibonucleoprotein, U1 Small NuclearGene ExpressionHumansPhosphorylationProtein DomainsRecombinant ProteinsRecombinant ProteinsRibonucleoprotein, U1 Small NuclearSNRNP70 protein, humanBAD domainprotein solubilityRNA splicingsnRNP70U1‐70K

Identifiers

PMID38896106
PMCPMC11189609

What Socratic 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 Socratic graph.