Mycobacterial porin

MspA
Identifiers
Symbol MspA
Pfam PF09203
InterPro IPR015286
SCOP 1uun
SUPERFAMILY 1uun
TCDB 1.B.24
OPM superfamily 268
OPM protein 1uun

MspA porin is a membrane porin produced by Mycobacteria, allowing hydrophilic nutrients to enter the bacterium. The protein forms a tightly interconnected octamer with eight-fold rotation symmetry that resembles a goblet and contains a central channel. Each protein subunit contains a beta-sandwich of immunoglobulin-like topology and a beta-ribbon arm that forms an oligomeric transmembrane beta-barrel.[1]

References

  1. Schulz GE, Faller M, Niederweis M (2004). "The structure of a mycobacterial outer-membrane channel". Science. 303 (5661): 1189–92. doi:10.1126/science.1094114. PMID 14976314.


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