Product Details

Full Product Name

Rabbit anti-Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) ISU1 Polyclonal antibody

Uniprot No.

Q03020

Target Names

ISU1

Alternative Names

ISU1 antibody; NUA1 antibody; YPL135W antibody; Iron sulfur cluster assembly protein 1 antibody; mitochondrial antibody; Iron sulfur cluster scaffold protein 1 antibody

Raised in

Rabbit

Species Reactivity

Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)

Immunogen

Recombinant Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) ISU1 protein

Immunogen Species

Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)

Conjugate

Non-conjugated

Clonality

Polyclonal

Isotype

IgG

Purification Method

Antigen Affinity Purified

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4

Form

Liquid

Tested Applications

ELISA, WB (ensure identification of antigen)

Protocols

ELISA Protocol

Troubleshooting and FAQs

Antibody FAQs

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Value-added Deliverables

① 200ug * antigen (positive control);
② 1ml * Pre-immune serum (negative control);

Quality Guarantee

① Antibody purity can be guaranteed above 90% by SDS-PAGE detection;
② ELISA titer can be guaranteed 1: 64,000;
③ WB validation with antigen can be guaranteed positive;

Lead Time

Made-to-order (14-16 weeks)

Target Background

Function

Scaffold protein for the de novo synthesis of iron-sulfur (Fe-S) clusters within mitochondria, which is required for maturation of both mitochondrial and cytoplasmic [2Fe-2S] and [4Fe-4S] proteins. First, a [2Fe-2S] cluster is transiently assembled on the scaffold proteins ISU1 and ISU2. In a second step, the cluster is released from ISU1/ISU2, transferred to glutaredoxin GRX5, followed by the formation of mitochondrial [2Fe-2S] proteins, the synthesis of [4Fe-4S] clusters and their target-specific insertion into the recipient apoproteins. Cluster assembly on ISU1/ISU2 depends on the function of the cysteine desulfurase complex NFS1-ISD11, which serves as the sulfur donor for cluster synthesis, the iron-binding protein frataxin (YFH1) as the putative iron donor, and the electron transfer chain comprised of ferredoxin reductase ARH1 and ferredoxin YAH1, which receive their electrons from NADH. Fe-S cluster release from ISU1/ISU2 is achieved by interaction with the Hsp70 chaperone SSQ1, assisted by the DnaJ-like co-chaperone JAC1 and the nucleotide exchange factor MGE1. ISU1 is the major isoform in yeast, while ISU2 is not detectable in cells grown to stationary phase. Also involved in production of a sulfur precursor required for thiolation of cytoplasmic tRNAs.

Gene References into Functions

Isu is a substrate of the Lon-type protease and that it is protected from degradation by Nfs1, the sulfur donor for Fe-S cluster assembly, as well as by Jac1, the J-protein Hsp70 cochaperone that functions in cluster transfer from Isu. Nfs1 and Jac1 variants known to be defective in interaction with Isu were also defective in protecting Isu from degradation. PMID: 26842892
The eukaryotic forms are critical for Fe-S cluster assembly whereas prokaryotic forms are more dispensable. We found that a key to this difference is a single amino acid in the scaffold protein Isu1 at position 141. PMID: 25996596
Fe/S cluster synthesis on Isu1 requires the ferredoxin Yah1 PMID: 25358379
In frataxin-deleted strains expressing the bypass mutant Isu1, cell growth and iron homeostasis are restored to close to normal. PMID: 24433162
The present paper reported that a single amino acid substitution in the mature form of Isu1 restored many deficient functions in yfh1 or frataxin-depleted yeast cells. PMID: 21936771
The studies indicate that the Isu proteins and the iron-sulfur pathway can donate iron to Sod2p. PMID: 19561359

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Subcellular Location

Mitochondrion matrix.

Protein Families

NifU family

Database Links

KEGG: sce:YPL135W

STRING: 4932.YPL135W

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