SIAH1 Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	WB
Recommend Dilution	Western blot (1-5 µg/ml).
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Immunogen	Synthetic peptide derived from the human SIAH-1 protein
Specificity	This antibody detects SIAH1 / E3 Ubiquitin Ligase. Antibody tested on human brain lysate.
Formulation	Phosphate buffered saline with 0.08 % sodium azide State: Purified State: Liquid purified Ig fraction
Concentration	lot specific
Conjugation	Unconjugated
Storage Condition	Store the product (in aliquots) at -20 °C. Can be shipped at 2 - 8 °C. Avoid repeated freezing and thawing.
Gene Name	siah E3 ubiquitin protein ligase 1
Database Link	Entrez Gene 6477 Human UniProt ID Q8IUQ4
Background	Seven in absentia homolog 1 (SIAH-1) is a member of the RING-finger-containing E3 ubiquitin ligases. Alpha-synuclein and synphilin-1 are substrates of SIAH-1. Both proteins are involved in the development of Parkinson's disease (PD). Mutations in Parkin, another E3 ubiquitin ligase which ubiquinates synphilin-1 and glycosylated alpha-synuclein, have been defined as a major cause of autosomal recessive PD. The role of SIAH-1 in PD is highlighted by the fact that SIAH-1 is a component of the Lewy bodies and plays a role in apoptosis caused by nitric oxide (NO) induced oxidative stress. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) a classic glycolytic enzyme, and multi-functional protein. GAPDH plays role as a mediator for cell death. GAPDH translocates to the nucleus under a variety of stressors/conditions, most of which are associated with oxidative stress. Sequential steps lead to nuclear translocation of GAPDH during cell death; 1] a catalytic cysteine in GAPDH (C150 in rat GAPDH) is S-nitrosylated by nitric oxide (NO) which is generated from inducible nitric oxide synthase (iNOS) and/or neuronal NOS (nNOS); 2] the modified GAPDH becomes capable of binding with Siah1, an E3 ubiquitin ligase, and stabilizes it;3] the GAPDH-Siah protein complex translocates to the nucleus, dependent on Siah1's nuclear localization signal, and degrades Siah1's substrates in the nucleus, which results in cytotoxicity.
Synonyms	Siah-1, Siah-1a, HUMSIAH
Reference Data

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