Proteome analysis of the circadian clock protein PERIOD2.
Proteins
; 90(6): 1315-1330, 2022 06.
Article
en En
| MEDLINE
| ID: mdl-35122331
ABSTRACT
Circadian rhythms are a series of endogenous autonomous 24-h oscillations generated by the circadian clock. At the molecular level, the circadian clock is based on a transcription-translation feedback loop, in which BMAL1 and CLOCK transcription factors of the positive arm activate the expression of CRYPTOCHROME (CRY) and PERIOD (PER) genes of the negative arm as well as the circadian clock-regulated genes. There are three PER proteins, of which PER2 shows the strongest oscillation at both stability and cellular localization level. Protein-protein interactions (PPIs) or interactome of the circadian clock proteins have been investigated using classical methods such as two-dimensional gel electrophoresis, immunoprecipitation-coupled mass spectrometry, and yeast-two hybrid assay where the dynamic and weak interactions are difficult to catch. To identify the interactome of PER2 we have adopted proximity-dependent labeling with biotin and mass spectrometry-based identification of labeled proteins (BioID). In addition to known interactions with such as CRY1 and CRY2, we have identified several new PPIs for PER2 and confirmed some of them using co-immunoprecipitation technique. This study characterizes the PER2 protein interactions in depth, and it also implies that using a fast BioID method with miniTurbo or TurboID coupled to other major circadian clock proteins might uncover other interactors in the clock that have yet to be discovered.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Proteínas Circadianas Period
/
Relojes Circadianos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Proteins
Asunto de la revista:
BIOQUIMICA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Turquía