Functional Information from PDB Data
site_id | CPS |
Number of Residues | 1 |
Details | C-TERMINAL PROTEOLYTIC PROCESSING STOP. SEE REMARK FOR THE NPS SITE ABOVE. |
site_id | NPS |
Number of Residues | 1 |
Details | N-TERMINAL PROTEOLYTIC PROCESSING STOP. THE COORDINATES OF CYTB IS THAT OF THE INACTIVE PROTOXIN, WHICH EXISTS AS A DIMER IN THE CRYSTAL AND IN SOLUTION. THE N-TERMINAL ARMS OF TWO MONOMERS ARE INTERTWINED IN FORMING THE CENTRAL PAIR OF STRANDS IN A 12-STRANDED SHEET OF THE DIMER. PROTEOLYTIC PROCESSING CLEAVES THIS PAIR OF STRANDS TO RELEASE THE ACTIVE TOXIN AS A MONOMER, WHICH EXTENDS FROM THE NPS SITE TO THE CPS SITE WHEN PROTEINASE K IS USED FOR THE PROCESSING. |