title: CCDC90B
text: # CCDC90B
  
  Coiled coil domain containing 90B, also known as CCDC90B, is a protein encoded by the CCDC90B gene.
  
  ## Gene
  
  CCDC90B is located on chromosome 11 in humans. It is neighbored by:
  
  * PCF11, a mammalian pre-mRNA cleavage complex 2 protein
  * ANKRD42, ankyrin repeat protein involved with calcium ion bonding
  * BC070093
  * DLG2, a member of the membrane-associated guanylate kinase (MAGUK) family
  
  ## Protein
  
  ### Structure
  
  This protein is characterized by the presence of a domain of unknown function, DUF1640. This domain is a characteristic of the entire protein with the exception of the first twenty-three amino acid residues - MNSRQAWRLFLSQGRGDRWVSRP - which are a mitochondrial targeting site and cleaved.
  
  The protein has seven predicted alpha helices, a characteristic of coiled-coil proteins.
  
  ### Predicted Properties
  
  Molecular Weight: 26.72 kDa
  
  Isoelectric point: 7.5
  
  Transmembrane Helices: None
  
  Post-translation modifications:
  
         Chloroplast transit peptides: None
         Signal pepties: None
         C-mannosylation sites: None
         N-glycosylation sites: None
         Mitochondrial targeting: Yes
            Cleaved site: MNSRQAWRLFLSQGRGDRWVSRP
  
  ### Cellular Location
  
  CCDC90B is presumably a mitochondrial protein. It is predicted to contain at least three specific phosphorylation sites: Protein Kinase C Phosphorylation sites, Casein Kinase II Phosphorylation sites, and cAMP/cGMP Dependent Phosphorylation sites.
  
  