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- ******************************************
- * Synaptophysin / synaptoporin signature *
- ******************************************
-
- Synaptophysin and synaptoporin [1] are structurally related proteins, found in
- the membrane of synaptic vesicles, which may function as ionic or solute
- channels. These two glycoproteins seem to span the membrane four times. Both
- their N- and C-termini sequences seem to be cytoplasmically located.
-
- As a signature pattern for this family of proteins we selected a highly
- conserved region located in the beginning of the first intravesicular loop
- just after the first transmembrane domain. This region contains a cysteine
- residue that may be involved in a disulfide bond.
-
- -Consensus pattern: L-S-V-[DE]-C-x-N-K-T
- [C may be involved in a disulfide bond]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: December 1991 / First entry.
-
- [ 1] Knaus P., Marqueze-Pouey B., Scherer H., Betz H.
- Neuron 5:453-462(1990).
-