EIF2S1 Antibody (YA5308)

Cat. No.: HY-P85616: Data Sheet User Guide for Antibodies
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EIF2S1 Antibody (YA5308) is a Mouse-derived and non-conjugated monoclonal antibody, targeting to EIF2S1.

For research use only. We do not sell to patients.

Size		Stock
50 μL		Get quote
100 μL		Get quote

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WB: Western Blot;
IHC-P: Immunohistochemistry-Paraffin;
IHC-F: Immunohistochemistry-Frozen;
ICC/IF: Immunocytochemistry/Immunofluorescence;
IF-Tissue: Immunofluorescence-Tissue;
mIHC: Multiplex Immunohistochemical;
IP: Immunoprecipitation;
ChIP: Chromatin Immunoprecipitation;
FC: Flow Cytometry;
ELISA: Enzyme Linked Immunosorbent Assay

Product Detail
Background
Documentation
References

Description

EIF2S1 Antibody (YA5308) is a Mouse-derived and non-conjugated monoclonal antibody, targeting to EIF2S1.

Host

Mouse

Clonality

Monoclonal

Molecular Weight

Observed band size: 38 kDa

Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.

Species Reactivity

Human, Mouse, Rat

SwissProt ID

P05198

Gene ID

1965 [NCBI]

Immunogen

Purified recombinant human eIF2α protein fragments expressed in E.coli.

Application &
Dilution Ratio

Application	Dilution Ratio
WB WB: Western Blot	1:1000
ICC/IF ICC/IF: Immunocytochemistry/Immunofluorescence	1:200
ICC/IF ICC/IF: Immunocytochemistry/Immunofluorescence	1:50-200

Purity	affinity chromatography.	Conjugation	Non-conjugated
Modification	Unmodified

Appearance

Liquid

Formulation

Supplied in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.

Storage & Stability

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

Shipping

Shipping with blue ice.

Background

Function：Member of the eIF2 complex that functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA (PubMed:16289705, PubMed:38340717). This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S pre-initiation complex (43S PIC) (PubMed:16289705). Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF2 and release of an eIF2-GDP binary complex (PubMed:16289705). In order for eIF2 to recycle and catalyze another round of initiation, the GDP bound to eIF2 must exchange with GTP by way of a reaction catalyzed by eIF2B (PubMed:16289705). EIF2S1/eIF2-alpha is a key component of the integrated stress response (ISR), required for adaptation to various stress: phosphorylation by metabolic-stress sensing protein kinases (EIF2AK1/HRI, EIF2AK2/PKR, EIF2AK3/PERK and EIF2AK4/GCN2) in response to stress converts EIF2S1/eIF2-alpha in a global protein synthesis inhibitor, leading to an attenuation of cap-dependent translation, while concomitantly initiating the preferential translation of ISR-specific mRNAs, such as the transcriptional activators ATF4 and QRICH1, and hence allowing ATF4- and QRICH1-mediated reprogramming (PubMed:19131336, PubMed:33384352, PubMed:38340717). EIF2S1/eIF2-alpha also acts as an activator of mitophagy in response to mitochondrial damage: phosphorylation by EIF2AK1/HRI promotes relocalization to the mitochondrial surface, thereby triggering PRKN-independent mitophagy (PubMed:38340717)

Subcellular Localization：Cytoplasm, Stress granule; Cytoplasm, cytosol; Mitochondrion

Expression：
Induction:Up-regulated upon endoplasmic reticulum stress

Subunit：Eukaryotic translation initiation factor 2 eIF2 is a heterotrimeric complex composed of an alpha (EIF2S1), a beta (EIF2S2) and a gamma (EIF2S3) chain (PubMed:23063529, PubMed:31048492, PubMed:31836389, PubMed:35031321). eIF2 is member of the 43S pre-initiation complex (43S PIC). eIF2 forms a complex with at least CELF1/CUGBP1, CALR, CALR3, EIF2S1, EIF2S2, HSP90B1 and HSPA5 (By similarity). Interaction with METAP2 protects EIF2S1 from inhibitory phosphorylation (By similarity). Interacts with ABCF1 isoform 2 (PubMed:17894550). Associates with ribosomes (PubMed:17894550). Interacts with DDX3X in an RNA-independent manner (PubMed:18596238). Interacts with CDC123 (PubMed:31836389, PubMed:35031321)

Synonyms

Dmel\CG6376; Dmel_CG6376; drosE2F1; E; Sev-CycE; 3A; E; var; 3-93E; E2-promoter binding facto; E2F 1; E2F transcription factor 1; E2F-1; E2f-PA; E2f-PB; E2f-PC; E2F1; E2f1 E2F transcription factor 1; E2F1_HUMAN; Evar; 3; 164; KIAA4009; l; 3; 07172; l; 3; j3B1; l; 3; j3C2; l; 3; rM729; mKIAA4009; OTTHUMP00000030661; PBR3; PRB binding protein E2F 1; PRB-binding protein E2F-1; RBAP 1; RBAP-1; RBAP1; RBBP-3; RBBP3; RBP 3; RBP3; Retinoblastoma-associated protein 1; Retinoblastoma-binding protein 3; Transcription factor E2F1.

Documentation

User Guide for Antibodies (1077 KB)

References

[1]. /biology-dictionary/nci-h460-cell.html [Content Brief]