CLOCK Rabbit Polyclonal Antibody

About this product

CLOCK protein has been found to play a central role as a transcription factor in the circadian pacemaker. In Drosophila, newly synthesized CLOCK (CLK) is hypophosphorylated in the cytoplasm before entering the nucleus. Once in the nuclei, CLK is localized in nuclear foci and is later redistributed homogeneously. CYCLE (CYC) (also known as dBMAL for the BMAL1 ortholog in mammals) dimerizes with CLK via their respective PAS domains. This dimer then recruits co-activator CREB-binding protein (CBP) and is further phosphorylated. Once phosphorylated, this CLK-CYC complex binds to the E-box elements of the promoters of period (per) and timeless (tim) via its bHLH domain, causing the stimulation of gene expression of per and tim. A large molar excess of period (PER) and timeless (TIM) proteins causes formation of the PER-TIM heterodimer which prevents the CLK-CYC heterodimer from binding to the E-boxes of per and tim, essentially blocking per and tim transcription. CLK is hyperphosphorylated when doubletime (DBT) kinase interacts with the CLK-CYC complex in a PER reliant manner, destabilizing both CLK and PER, leading to the degradation of both proteins. Hypophosphorylated CLK then accumulates, binds to the E-boxes of per and tim and activates their transcription once again. This cycle of post-translational phosphorylation suggest that temporal phosphorylation of CLK helps in the timing mechanism of the circadian clock. CLOCK exhibits histone acetyl transferase (HAT) activity, which is enhanced by dimerization with BMAL1. Dr. Paolo Sassone-Corsi and colleagues demonstrated in vitro that CLOCK mediated HAT activity is necessary to rescue circadian rhythms in Clock mutants.

Specifications

Catalog number

R1511-2

Size / count

100 µL

Dry ice

No

Hazardous

No

Discontinued

No

CAS Number

9007-83-4

Product Name Alternative

bHLHe8 antibody Circadian locomoter output cycles kaput protein antibody Circadian locomoter output cycles protein kaput antibody Circadian Locomotor Output Cycles Kaput antibody Circadium Locomotor Output Cycles Kaput antibody Class E basic helix-loop-helix protein 8 antibody CLOCK antibody Clock circadian regulator antibody Clock homolog antibody Clock protein antibody CLOCK_HUMAN antibody hCLOCK antibody KIAA0334 antibody

Abbreviation

hCLOCK,bHLHe8

Swiss Prot

O15516 Human, O08785 Mouse, Q9WVS9 Rat

Cellular Locus

Cytoplasm, Nucleus

Host

Rabbit

Species Reactivity

Human, Mouse, Rat

Immunogen

Synthetic peptide within mouse CLOCK 829-855/855.

Isotype

IgG

Conjugation

Non-conjugated

Type

Rabbit polyclonal Antibody

Applications

WB, IF-Cell, IHC-P, FC

Positive Control

HeLa cell lysate, MCF7 cell lysate, HEK-293 cell lysate, NIH/3T3 cell lysate, PC-12 cell lysate, Human brain tissue lysate, Mouse brain tissue lysate, Rat kidney tissue lysate, PC-3M, SW480, Hela, 293, human kidney tissue, mouse testis tissue, mouse skeletal muscle tissue, human colon cancer tissue.

Concentration

1 mg/mL

Dilution

WB: 1:1,000-1:5,000 ;IF-Cell: 1:50-1:200 ;IHC-P: 1:50-1:200 ;FC: 1:50-1:100

Purity

Immunogen affinity purified.

Form

Liquid

Buffer

1*PBS (pH7.4), 0.2% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.

Molecular Weight

Predicted band size: 95 kDa

Storage Conditions

Store at +4°C after thawing. Aliquot store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

Recombinant Antibody

No