Q4990

QBP1

≥95% (HPLC)

• Sinónimos: L-Seryl-L-asparaginyl-L-tryptophyl-L-lysyl-L-tryptophyl-L-tryptophyl-L-prolylglycyl-L-isoleucyl-L-phenylalanyl-L-aspartic acid trifluoroacetate salt
• Fórmula empírica (notación de Hill): C₇₂H₉₀N₁₆O₁₆ · xC₂HF₃O₂
• Número de CAS: 274914-75-9
• Peso molecular: 1435.58 (free base basis)
• Código UNSPSC: 12352203
• ID de la sustancia en PubChem: 329823866
• NACRES: NA.25

Propiedades

• Nivel de calidad: 100
• Ensayo: ≥95% (HPLC)
• Formulario: powder
• color: white
• solubilidad: H₂O: >1 mg/mL
• temp. de almacenamiento: −20°C
• cadena SMILES: OC(=O)C(F)(F)F.CC[C@H](C)[C@H](NC(=O)CNC(=O)[C@@H]1CCCN1C(=O)[C@H](Cc2c[nH]c3ccccc23)NC(=O)[C@H](Cc4c[nH]c5ccccc45)NC(=O)[C@H](CCCCN)NC(=O)[C@H](Cc6c[nH]c7ccccc67)NC(=O)[C@H](CC(N)=O)NC(=O)[C@@H](N)CO)C(=O)N[C@@H](Cc8ccccc8)C(=O)N[C@@H](CC(O)=O)C(O)=O
• InChI: 1S/C72H90N16O16.C2HF3O2/c1-3-39(2)62(70(101)84-52(28-40-16-5-4-6-17-40)65(96)86-57(72(103)104)33-61(92)93)87-60(91)37-79-69(100)58-25-15-27-88(58)71(102)56(31-43-36-78-50-23-12-9-20-46(43)50)85-67(98)54(30-42-35-77-49-22-11-8-19-45(42)49)82-64(95)51(24-13-14-26-73)80-66(97)53(29-41-34-76-48-21-10-7-18-44(41)48)83-68(99)55(32-59(75)90)81-63(94)47(74)38-89;3-2(4,5)1(6)7/h4-12,16-23,34-36,39,47,51-58,62,76-78,89H,3,13-15,24-33,37-38,73-74H2,1-2H3,(H2,75,90)(H,79,100)(H,80,97)(H,81,94)(H,82,95)(H,83,99)(H,84,101)(H,85,98)(H,86,96)(H,87,91)(H,92,93)(H,103,104);(H,6,7)/t39-,47-,51-,52-,53-,54-,55-,56-,57-,58-,62-;/m0./s1
• Clave InChI: VSUBSHMCMRUEAG-IQVZWRNHSA-N

Descripción

Aplicación

QBP1, an oligopeptide inhibitor of polyglutamine protein aggregation, may be used to study the physicochemical processes of polyglutamine-dependent protein misfolding, aggregation and precipitation. QBP1 may be used to study the role polyglutamine protein aggregation in causing or aggravating polyglutamine diseases including neurodegenerative diseases such as Huntington′s dentatorubral pallidoluysian atrophy, spinobulbar muscular atrophy, and spinocerebellar ataxia.[1][2]

Acciones bioquímicas o fisiológicas

QBP1 is an inhibitor of polyglutamine protein aggregation and cell death.

QBP1 is an inhibitor of polyglutamine protein aggregation and cell death. QBP1 inhibits polyglutamine aggregation in COS-7 cells at a concentration of 25 μM, as shown by complete inhibition of thioredoxin-Q₆₂ aggregation assayed by turbidity at 405 nm. QBP1 reduces cell death of these cells by 50% and increases median life span from 5.5-52 days in Drosophilla melanogaster that expresses the expanded polyglutamine; can be shortened to 8 amino acids (Trp-Ley-Trp-Trp-Pro-Gly-Ile-Phe) without the loss of ability to inhibit polyglutamine aggregation. Several inherited neurodegenerative diseases, Huntington′s dentatorubral pallidoluysian atrophy, spinobulbar muscular atrophy, and spinocerebellar ataxia are caused by the expanded CAG repeats in the coding region of the gene, leading to accumulation of polyglutamine.

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 2
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable