Multiple Coagulation Factor Deficiency 2 (MCFD2) Human Recombinant Protein

This gene encodes a soluble luminal protein with two calmodulin-like EF-hand motifs at its C-terminus. This protein forms a complex with LAMN1 (lectin mannose binding protein 1; also known as ERGIC-53) that facilitates the transport of coagulation factors V (FV) and VIII (FVIII) from the endoplasmic reticulum to the Golgi apparatus via an endoplasmic reticulum Golgi intermediate compartment (ERGIC). Mutations in this gene cause combined deficiency of FV and FVIII (F5F8D); a rare autosomal recessive bleeding disorder characterized by mild to moderate bleeding and coordinate reduction in plasma FV and FVIII levels. This protein has also been shown to maintain stem cell potential in adult central nervous system and is a marker for testicular germ cell tumors. The 3' UTR of this gene contains a transposon-like human repeat element named 'THE 1'. A processed RNA pseudogene of this gene is on chromosome 6p22.1. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jun 2010]

MCFD2: The MCFD2-LMAN1 complex forms a specific cargo receptor for the ER-to-Golgi transport of selected proteins. Plays a role in the secretion of coagulation factors. Defects in MCFD2 are a cause of factor V and factor VIII combined deficiency type 2 (F5F8D2); also known as multiple coagulation factor deficiency 2 (MCFD2). F5F8D2 is a blood coagulation disorder characterized by bleeding symptoms similar to those in hemophilia or parahemophilia, that are caused by single deficiency of FV or FVIII, respectively. The most common symptoms are epistaxis, menorrhagia, and excessive bleeding during or after trauma. Plasma levels of coagulation factors V and VIII are in the range of 5 to 30% of normal. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Endoplasmic reticulum

Chromosomal Location of Human Ortholog: 2p21

Cellular Component: Golgi apparatus; endoplasmic reticulum; ER-Golgi intermediate compartment

Molecular Function: calcium ion binding

Biological Process: vesicle-mediated transport; protein transport; cellular protein metabolic process; protein amino acid N-linked glycosylation via asparagine; post-translational protein modification

Disease: Factor V And Factor Viii, Combined Deficiency Of, 2