MeSH definition : Basic helix-loop-helix (bHLH) domain-containing proteins that contain intrinsic HISTONE
ACETYLTRANSFERASE activity and play important roles in CIRCADIAN RHYTHM regulation.
Clock proteins combine with Arntl proteins to form heterodimeric transcription factors
that are specific for E-BOX ELEMENTS and stimulate the transcription of several E-box
genes that are involved in cyclical regulation. This transcriptional activation also
sets into motion a time-dependent feedback loop which in turn down-regulates the expression
of clock proteins.;
Basic helix-loop-helix (bHLH) domain-containing proteins that contain intrinsic HISTONE
ACETYLTRANSFERASE activity and play important roles in CIRCADIAN RHYTHM regulation.
Clock proteins combine with Arntl proteins to form heterodimeric transcription factors
that are specific for E-BOX ELEMENTS and stimulate the transcription of several E-box
genes that are involved in cyclical regulation. This transcriptional activation also
sets into motion a time-dependent feedback loop which in turn down-regulates the expression
of clock proteins.