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AB5620

Anti-Proteasome Activator Subunit 4/PSME4 antibody

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(4 Publications)

Rabbit Polyclonal Proteasome Activator Subunit 4/PSME4 antibody. Suitable for WB, ICC/IF and reacts with Mouse, Human samples. Cited in 4 publications. Immunogen corresponding to Synthetic Peptide within Human PSME4 aa 1700-1750.

View Alternative Names

BLM10, KIAA0077, PSME4, Proteasome activator complex subunit 4, Proteasome activator PA200, Protein BLM10 homolog, Blm10, hBlm10

3 Images
Western blot - Anti-Proteasome Activator Subunit 4/PSME4 antibody (AB5620)
  • WB

Supplier Data

Western blot - Anti-Proteasome Activator Subunit 4/PSME4 antibody (AB5620)

All lanes:

Western blot - Anti-Proteasome Activator Subunit 4/PSME4 antibody (ab5620) at 1/2000 dilution

All lanes:

Mouse testis tissue lysate at 25 µg

Secondary

All lanes:

HRP-conjugated anti-rabbit

Predicted band size: 211 kDa

Observed band size: 160 kDa,200 kDa

true

Immunocytochemistry/ Immunofluorescence - Anti-Proteasome Activator Subunit 4/PSME4 antibody (AB5620)
  • ICC/IF

Unknown

Immunocytochemistry/ Immunofluorescence - Anti-Proteasome Activator Subunit 4/PSME4 antibody (AB5620)

ICC/IF image of ab5620 stained HeLa cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1% BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab5620, 5μg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43μM.

Western blot - Anti-Proteasome Activator Subunit 4/PSME4 antibody (AB5620)
  • WB

Supplier Data

Western blot - Anti-Proteasome Activator Subunit 4/PSME4 antibody (AB5620)

A 200 kDa band corresponding to PSME4 was observed in HeLa, Jurkat, and mouse testis. In addition, a 140 kDa band corresponding to an isoform of PSME4 was observed across the cell lines and tissues tested.

Blocking - 5% skimmed milk

All lanes:

Western blot - Anti-Proteasome Activator Subunit 4/PSME4 antibody (ab5620) at 1/250 dilution

Lane 1:

HeLa whole cell extract at 30 µg

Lane 2:

Jurkat whole cell extract at 30 µg

Lane 3:

Mouse testis tissue extract at 30 µg

Lane 4:

Mouse pancreas tissue extract at 30 µg

Lane 5:

Rat pancreas tissue extract at 30 µg

Secondary

All lanes:

Goat anti-Rabbit IgG (H+L) HRP conjugate at 1/4000 dilution

Predicted band size: 211 kDa

false

Key facts

Host species

Rabbit

Clonality

Polyclonal

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Human

Applications

ICC/IF, WB

applications

Immunogen

Synthetic Peptide within Human PSME4 aa 1700-1750. The exact immunogen used to generate this antibody is proprietary information.

Q14997

Reactivity data

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Properties and storage information

Form
Liquid
Purity
Whole antiserum
Storage buffer
Preservative: 0.05% Sodium azide
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Proteasome Activator Subunit 4 (PSME4) also known as PA200 is an important component in regulating protein degradation. It belongs to the family of proteasome activator subunits and has a molecular mass of approximately 230 kDa. PSME4 is mainly expressed in the nucleus of cells and modulates proteasome activity by binding to the proteasome core particle. Through facilitating protein breakdown PSME4 significantly influences various cellular processes including the elimination of oxidatively damaged proteins.
Biological function summary

PSME4 functions as part of a complex that enhances proteasome-mediated protein degradation. This complex formation improves the efficiency of protein processing by recruiting specific substrates for degradation. PSME4 is involved in DNA repair processes and plays a role in spermatogenesis contributing to proper cell cycle progression and genomic stability. The protein's activity in these biological functions demonstrates its importance in maintaining cellular homeostasis.

Pathways

PSME4 is intricately involved in the ubiquitin-proteasome pathway and the DNA damage response pathway which are essential for maintaining protein quality control and genomic integrity. PSME4 interacts with other proteins such as RAD23B facilitating the repair of damaged DNA. By integrating into these pathways PSME4 ensures the proper execution of critical cellular processes and responds to stress-related signals.

Alterations in PSME4 expression or function have connections to cancer progression and neurodegenerative diseases. In cancer PSME4 may influence tumor growth and resistance to therapy through its role in DNA repair and protein turnover. Additionally in neurodegenerative conditions like Alzheimer's disease PSME4-associated proteasome dysfunction contributes to the accumulation of toxic protein aggregates. Understanding PSME4 interactions with proteins like p53 in cancer or tau in neurodegeneration offers insights into potential therapeutic targets.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Associated component of the proteasome that specifically recognizes acetylated histones and promotes ATP- and ubiquitin-independent degradation of core histones during spermatogenesis and DNA damage response. Recognizes and binds acetylated histones via its bromodomain-like (BRDL) region and activates the proteasome by opening the gated channel for substrate entry. Binds to the core proteasome via its C-terminus, which occupies the same binding sites as the proteasomal ATPases, opening the closed structure of the proteasome via an active gating mechanism. Component of the spermatoproteasome, a form of the proteasome specifically found in testis : binds to acetylated histones and promotes degradation of histones, thereby participating actively to the exchange of histones during spermatogenesis. Also involved in DNA damage response in somatic cells, by promoting degradation of histones following DNA double-strand breaks.
See full target information PSME4

Publications (4)

Recent publications for all applications. Explore the full list and refine your search

The Journal of neuroscience : the official journal of the Society for Neuroscience 43:1310-1320 PubMed36717228

2023

Postsynaptic NMDA Receptor Expression Is Required for Visual Corticocollicular Projection Refinement in the Mouse Superior Colliculus.

Applications

Unspecified application

Species

Unspecified reactive species

Kristy O Johnson,Leeor Harel,Jason W Triplett

Archives of biochemistry and biophysics 523:181-90 PubMed22564544

2012

Differential roles of proteasome and immunoproteasome regulators Pa28αβ, Pa28γ and Pa200 in the degradation of oxidized proteins.

Applications

WB

Species

Mouse

Andrew M Pickering,Kelvin J A Davies

American journal of physiology. Endocrinology and 295:E595-604 PubMed18577697

2008

Disassociation between the effects of amino acids and insulin on signaling, ubiquitin ligases, and protein turnover in human muscle.

Applications

WB

Species

Human

P L Greenhaff,L G Karagounis,N Peirce,E J Simpson,M Hazell,R Layfield,H Wackerhage,K Smith,P Atherton,A Selby,M J Rennie

FEBS letters 581:5543-7 PubMed17991438

2007

Effects of aging and dietary restriction on ubiquitination, sumoylation, and the proteasome in the spleen.

Applications

Unspecified application

Species

Unspecified reactive species

Le Zhang,Feng Li,Edgardo Dimayuga,Jeffrey Craddock,Jeffrey N Keller
View all publications

Product promise

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