Send to

Choose Destination
See comment in PubMed Commons below
Proc Natl Acad Sci U S A. 1984 Dec;81(23):7298-302.

Nucleotide sequence of cDNA and derived amino acid sequence of human complement component C9.


The nucleotide sequence coding for the ninth component of human complement (C9) has been determined and the corresponding amino acid sequence has been derived. A human liver cDNA library was screened by the colony-hybridization technique using two radiolabeled oligonucleotide probes that correspond to known regions of the C9 amino acid sequence. Two recombinant plasmids were isolated and their cDNA inserts were sequenced. The derived protein sequence consists of 537 amino acids in a single polypeptide chain. A profile of the hydropathic index versus sequence number indicates that the amino-terminal half of C9 is predominantly hydrophilic in character whereas the carboxyl-terminal section of this protein is more hydrophobic. The amphipathic organization of the primary structure of C9 is consistent with the known potential of polymerized C9 to penetrate lipid bilayers, causing the formation of transmembrane channels.

[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Support Center