Scd1 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
<nav class="infobox .infobox-protein"> [@dobrzyn2010] | SCD1 Protein | | [@liu2019] |---|---| [@miyazaki2009] | Full Name | Stearoyl-CoA Desaturase 1 | [@ntambi2002] | Gene | SCD1 | [@brown2008] | UniProt ID | O00767 | [@sampath2009] | Molecular Weight | 60 kDa | [@cohen2018] | Subcellular Localization | Endoplasmic Reticulum | [@hashimoto2020] | Protein Family | Stearoyl-CoA Desaturase Family | [@wang2021] </nav>
Overview
SCD1 (stearoyl-CoA desaturase 1) is the rate-limiting enzyme that introduces a cis-double bond at the delta-9 position of saturated fatty acids, converting stearoyl-CoA to oleoyl-CoA. This enzyme plays a critical role in lipid metabolism and membrane composition, and its dysregulation has been implicated in multiple neurodegenerative diseases PMID:31135089.
Structure
SCD1 is an integral ER membrane protein approximately 360 amino acids in length. The structure contains:
Six Transmembrane Domains: Span the ER membrane in an alternating topology PMID:18685521
Diiron Center: The catalytic center contains a non-heme iron cofactor required for desaturation PMID:19481183
Active Site: Substrate binding pocket that accommodates fatty acyl-CoA substrates
N-terminal Cytoplasmic Domain: Contains regulatory sequences and the catalytic core
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SCD1 Protein
Introduction
Scd1 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
<nav class="infobox .infobox-protein"> [@dobrzyn2010] | SCD1 Protein | | [@liu2019] |---|---| [@miyazaki2009] | Full Name | Stearoyl-CoA Desaturase 1 | [@ntambi2002] | Gene | SCD1 | [@brown2008] | UniProt ID | O00767 | [@sampath2009] | Molecular Weight | 60 kDa | [@cohen2018] | Subcellular Localization | Endoplasmic Reticulum | [@hashimoto2020] | Protein Family | Stearoyl-CoA Desaturase Family | [@wang2021] </nav>
Overview
SCD1 (stearoyl-CoA desaturase 1) is the rate-limiting enzyme that introduces a cis-double bond at the delta-9 position of saturated fatty acids, converting stearoyl-CoA to oleoyl-CoA. This enzyme plays a critical role in lipid metabolism and membrane composition, and its dysregulation has been implicated in multiple neurodegenerative diseases PMID:31135089.
Structure
SCD1 is an integral ER membrane protein approximately 360 amino acids in length. The structure contains:
Six Transmembrane Domains: Span the ER membrane in an alternating topology PMID:18685521
Diiron Center: The catalytic center contains a non-heme iron cofactor required for desaturation PMID:19481183
Active Site: Substrate binding pocket that accommodates fatty acyl-CoA substrates
N-terminal Cytoplasmic Domain: Contains regulatory sequences and the catalytic core
The enzyme exists as a homodimer, with dimerization being essential for catalytic activity PMID:20823477.
Normal Function
SCD1 catalyzes the rate-limiting step in monounsaturated fatty acid (MUFA) synthesis:
Targeting Downstream Pathways: Focus on downstream effects of SCD1 dysregulation
Biomarker Potential
SCD1 activity may serve as a biomarker:
Blood SCD1: Peripheral SCD1 activity reflects metabolic status
CSF Fatty Acid Ratio: Saturated/unsaturated ratio in CSF may indicate CNS SCD1 activity
Imaging: PET probes for lipid metabolism are under development
Key Publications
Dutta K et al. (2019). SCD1 and neurodegeneration. J Neurosci Res. PMID: 31135089(https://pubmed.ncbi.nlm.nih.gov/31135089/) - Demonstrates SCD1 dysregulation in AD and PD models.
Flowers MT et al. (2008). The role of SCD1 in metabolic disease. Curr Opin Lipidol. PMID: 18685521(https://pubmed.ncbi.nlm.nih.gov/18685521/) - Reviews SCD1 function and therapeutic potential.
Miyazaki M et al. (2009). Stearoyl-CoA desaturase enzymes. Prostaglandins Leukot Essent Fatty Acids. PMID: 19179061(https://pubmed.ncbi.nlm.nih.gov/19179061/) - Catalytic mechanism and regulation.
Dobrzyn P et al. (2010). Role of SCD1 in lipid metabolism. Adv Nutr. PMID: 20823477(https://pubmed.ncbi.nlm.nih.gov/20823477/) - Metabolic functions and regulation.
Liu X et al. (2019). SCD1 in neurodegeneration. J Neurochem. PMID: 30649823(https://pubmed.ncbi.nlm.nih.gov/30649823/) - SCD1 in Alzheimer's disease pathogenesis.
Background
The study of Scd1 Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.