Sandbox Reserved 1689: Difference between revisions

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The PB1 subunit constitutes the stereotypical right-handed model of RdRp, including the fingers, palm, and thumb of the hand. Motifs A-E are contained within the PB1 domain: motifs A, C, D, and E are all in the palm, and motifs B and F are in the fingers. The PB2 domain interacts with the PB1 thumb and C-terminus extension, conferring flexibility and stability to the overall complex. The PA domain spans the backside of PB1 and is responsible for the endonuclease activity of the RdRp.  
The PB1 subunit constitutes the stereotypical right-handed model of RdRp, including the fingers, palm, and thumb of the hand. Motifs A-E are contained within the PB1 domain: motifs A, C, D, and E are all in the palm, and motifs B and F are in the fingers. The PB2 domain interacts with the PB1 thumb and C-terminus extension, conferring flexibility and stability to the overall complex. The PA domain spans the backside of PB1 and is responsible for the endonuclease activity of the RdRp.  


The PB2 also contains the cap-binding domain necessary for cap-snatching. PB2 recognizes host primers and captures host RNA, allowing PA's endonuclease domain to cleave primers away.  
SCENE coloring different motifs
SCENE of this site
 
The PB2 also contains the cap-binding domain necessary for cap-snatching. PB2 recognizes host primers and captures host RNA, allowing PA's endonuclease domain to cleave primers away for use with vRNA.
 
SCENE highlighting this site


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