PEX16 Antibody – Mouse Monoclonal

The protein encoded by this gene is an integral peroxisomal membrane protein. An inactivating nonsense mutation localized to this gene was observed in a patient with Zellweger syndrome of the complementation group CGD/CG9. Expression of this gene product morphologically and biochemically restores the formation of new peroxisomes, suggesting a role in peroxisome organization and biogenesis. Alternative splicing has been observed for this gene and two variants have been described. [provided by RefSeq, Jul 2008]

PEX16: Required for peroxisome membrane biogenesis. May play a role in early stages of peroxisome assembly. Can recruit other peroxisomal proteins, such as PEX3 and PMP34, to de novo peroxisomes derived from the endoplasmic reticulum (ER). May function as receptor for PEX3. Defects in PEX16 are the cause of peroxisome biogenesis disorder complementation group 9 (PBD-CG9); also known as PBD-CGD. PBD refers to a group of peroxisomal disorders arising from a failure of protein import into the peroxisomal membrane or matrix. The PBD group is comprised of four disorders: Zellweger syndrome (ZWS), neonatal adrenoleukodystrophy (NALD), infantile Refsum disease (IRD), and classical rhizomelic chondrodysplasia punctata (RCDP). ZWS, NALD and IRD are distinct from RCDP and constitute a clinical continuum of overlapping phenotypes known as the Zellweger spectrum. The PBD group is genetically heterogeneous with at least 14 distinct genetic groups as concluded from complementation studies. Defects in PEX16 are a cause of Zellweger syndrome (ZWS). ZWS is a fatal peroxisome biogenesis disorder characterized by dysmorphic facial features, hepatomegaly, ocular abnormalities, renal cysts, hearing impairment, profound psychomotor retardation, severe hypotonia and neonatal seizures. Death occurs within the first year of life. Belongs to the peroxin-16 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 11p11.2

Cellular Component: peroxisomal membrane; integral to peroxisomal membrane; endoplasmic reticulum membrane; membrane; endoplasmic reticulum; peroxisome

Molecular Function: protein C-terminus binding; protein binding

Biological Process: ER-dependent peroxisome biogenesis; peroxisome organization and biogenesis; protein targeting to peroxisome; protein import into peroxisome matrix; protein to membrane docking; peroxisome membrane biogenesis; protein import into peroxisome membrane

Disease: Peroxisome Biogenesis Disorder 8b; Peroxisome Biogenesis Disorder 8a (zellweger)