Protein
DEAD-box ATP-dependent RNA helicase CshB
Organism
Bacillus cereus (strain ATCC 14579 / DSM 31 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NRRL B-3711)
Function
Probable DEAD-box RNA helicase. May work in conjunction with the cold shock proteins to ensure proper initiation of transcription at low and optimal temperatures. Unwinds dsRNA in both 5'- and 3'-directions and shows RNA-dependent ATPase activity (By similarity). Probably has a somewhat redundant function with CshA, as cshA can partially complement the growth effects of a cshB deletion.
Similarity
Belongs to the DEAD box helicase family. CshB subfamily.
Sequence
MTQQTFTQYDFKPFLIDAVRELRFTEPTGIQQKIFPVVKKGVSVIGQSQTGSGKTHAYLLPTLNRINASREEVQLVITAPTRELAQQIYEEIVKLTKFCAEDQMITARCLIGGTDKQRSIEKLKKQPHIVVGTPGRIKDLVEEQALFVHKANTIIVDEADLMLDMGFIHDVDKIAARMPKNLQMLVFSATIPQKLKPFLKKYMENPEHIHINPKQVAAGNIEHYLVPSKHRNKIDLVHKMLLQFKPYLAVVFTNTKKMADQVADGLMERGLKVGRIHGDLSPRDRKKMMKQIRDLEFQYIVATDLAARGIDIQGISHVINYQPPSDLDFFVHRVARTARAGHSGIAVTIYDPANEEALDSLEKQRHIEFKHVDLRGDEWADLGERRRRKSRKKPNDELDVMATKVIKKPKKVKPNYKRKLATERDKVKRKYSNKKR