Sulfur normally exists as an eight-atom molecule, S8, while phosphorus exists as a four-atom molecule, P4

TLS Online TPP Program

#Id: 8193

#Section 3: Genetics, Cellular and Molecular Biology

Pex5 forms a multimeric complex with the Pex14 receptor located on the peroxisomal membrane. 

TLS Online TPP Program

#Id: 8192

#Section 3: Genetics, Cellular and Molecular Biology

Catalase, are synthesized as precursors with PTS1

Thiolase, are synthesized as precursors with PTS2

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#Id: 8191

#Section 3: Genetics, Cellular and Molecular Biology

PTS1 signals are recognized by the peroxin Pex5 receptor

PTS2 signals are recognized by the peroxin Pex7 receptor

Neither targeting sequence is cleaved after import.

TLS Online TPP Program

#Id: 8190

#Section 3: Genetics, Cellular and Molecular Biology

Peroxins

Catalyse peroxisomal protein import by ATP hydrolysis.

TLS Online TPP Program

#Id: 8189

#Section 3: Genetics, Cellular and Molecular Biology

C-terminal peroxisomal signal sequences Ser–Lys–Leu (PTS1)

N-terminal peroxisomal signal sequences slightly longer and partially hydrophobic (PTS2)

TLS Online TPP Program

#Id: 8188

#Section 3: Genetics, Cellular and Molecular Biology

Plasmalogens

• most abundant class of PL in myelin sheaths

• Analogous to PC

• Contain an unusual fatty alcohol that is attached through an ether linkage.