Protein
Negative elongation factor B
Function
Essential component of the NELF complex, a complex that negatively regulates the elongation of transcription by RNA polymerase II (Pol II) (PubMed:25773599). The NELF complex, which acts via an association with the DSIF complex and causes transcriptional pausing, is counteracted by the P-TEFb kinase complex (By similarity). May be able to induce chromatin unfolding (By similarity). Essential for early embryogenesis; plays an important role in maintaining the undifferentiated state of embryonic stem cells (ESCs) by preventing unscheduled expression of developmental genes (PubMed:19340312). Plays a key role in establishing the responsiveness of stem cells to developmental cues; facilitates plasticity and cell fate commitment in ESCs by establishing the appropriate expression level of signaling molecules (PubMed:25773599). Supports the transcription of genes involved in energy metabolism in cardiomyocytes; facilitates the association of transcription initiation factors with the promoters of the metabolism-related genes (PubMed:24656816).
Similarity
Belongs to the NELF-B family.
Sequence
MFAGLQDLGVANGEDLKETLTNCTEPLKAIEQFQTENGVLLPSLQSALPFLDLHGTPRLEFHQSVFDELRDKLLERVSAIASEGKAEERYKKLEDLLEKSFSLVKMPSLQPVVMCVMKHLPKVPEKKLKLVMADKELYRACAVEVKRQIWQDNQALFGDEVSPLLKQYILEKESALFSTELSVLHNFFSPSPKTRRQGEVVQKLTQMVGKNVKLYDMVLQFLRTLFLRTRNVHYCTLRAELLMSLHDLDVSDICTVDPCHKFTWCLDACIRERFVDSKRARELQGFLDGVKKGQEQVLGDLSMILCDPFAINTLSLSTIRHLQELVSQETLPRDSPDLLLLLRLLALGQGAWDLIDSQVFKEPKMEAELITKFLPMLMSLVVDDFTFNVDQKLPAEEKASVTYPNTLPESFTKFLQEQRMACEVGLYYVLHITKQRNKNALLRLLPGLVETFGDLAFSDIFLHLLTGSLVLLADEFALEDFCSSLFDGFFLTASPRKENVHRHVLRLLLHLHARVAPSKLEALQKALEPTGQSGEAVKELYSQLGEKLEQLDHRKPSPTQAAETPALDLPLPSVPAPATL