Organism
Mycobacterium smegmatis (strain ATCC 700084 / mc(2)155)
Function
A backup porin induced when MspA, the major porin, is deleted. It probably forms a water-filled channel which favors the permeation of cations. There are about 2400 porins in wild-type, 800 in an mspA deletion and 150 in a double mspA-mspC deletion.
Similarity
Belongs to the mycobacterial porin (TC 1.B.24) family.
Sequence
MRYLVMMFALLVSVTLVSPRPANAVDNQLSVVDGQGRTLTVQQAETFLNGVFPLDRNRLTREWFHSGRATYHVAGPGADEFEGTLELGYQVGFPWSLGVGINFSYTTPNILIDGGDITQPPFGLDTIITPNLFPGVSISADLGNGPGIQEVATFSVDVKGAKGAVAVSNAHGTVTGAAGGVLLRPFARLIASTGDSVTTYGEPWNMN