8x7v

Structural highlights

Disease

NALP5_HUMAN NLRP5 variants have been found in a spectrum of phenotypes characterized by aberrant methylation of multiple imprinted loci, a condition known as multi-locus imprinting defect or multi-locus imprinting disturbance (MLID). MLID-related phenotype spectrum ranges from intrauterine death to different types of imprinting disorders, including Beckwith-Wiedemann syndrome (BWS), Silver-Russell syndrome (SRS), and non-specific developmental and behavioral manifestations. MLID has also been observed in individuals without overt clinical manifestations. Recurrent pregnancy loss has been reported in healthy women carrying NLRP5 variants.^{[1] [2] [3]} The disease is caused by variants affecting the gene represented in this entry.

Function

MALE_ECOLI Involved in the high-affinity maltose membrane transport system MalEFGK. Initial receptor for the active transport of and chemotaxis toward maltooligosaccharides.NALP5_HUMAN As a member of the subcortical maternal complex (SCMC), plays an essential role for zygotes to progress beyond the first embryonic cell divisions via regulation of actin dynamics (By similarity). Required for the formation of F-actin cytoplasmic lattices (CPL) in oocytes, which in turn are responsible for symmetric division of zygotes via the regulation of mitotic spindle formation and positioning (By similarity). Required for the localization of cortical granules to the cortex of oocytes, via association with the cortical actin scaffold (By similarity). Required for cortical actin clearance prior to oocyte exocytosis (By similarity). Involved in regulating post-fertilization Ca(2+) release and endoplasmic reticulum (ER) storage via regulation of ER localization (By similarity). May be involved in the localization of mitochondria to the cytoplasm and perinuclear region in oocytes and early stage embryos, independent of its role in CPL formation (By similarity).[UniProtKB:Q9R1M5]

References

1. ↑ Docherty LE, Rezwan FI, Poole RL, Turner CL, Kivuva E, Maher ER, Smithson SF, Hamilton-Shield JP, Patalan M, Gizewska M, Peregud-Pogorzelski J, Beygo J, Buiting K, Horsthemke B, Soellner L, Begemann M, Eggermann T, Baple E, Mansour S, Temple IK, Mackay DJ. Mutations in NLRP5 are associated with reproductive wastage and multilocus imprinting disorders in humans. Nat Commun. 2015 Sep 1;6:8086. PMID:26323243 doi:10.1038/ncomms9086
2. ↑ Soellner L, Kraft F, Sauer S, Begemann M, Kurth I, Elbracht M, Eggermann T. Search for cis-acting factors and maternal effect variants in Silver-Russell patients with ICR1 hypomethylation and their mothers. Eur J Hum Genet. 2019 Jan;27(1):42-48. PMID:30218098 doi:10.1038/s41431-018-0269-1
3. ↑ Sparago A, Verma A, Patricelli MG, Pignata L, Russo S, Calzari L, De Francesco N, Del Prete R, Palumbo O, Carella M, Mackay DJG, Rezwan FI, Angelini C, Cerrato F, Cubellis MV, Riccio A. The phenotypic variations of multi-locus imprinting disturbances associated with maternal-effect variants of NLRP5 range from overt imprinting disorder to apparently healthy phenotype. Clin Epigenetics. 2019 Dec 11;11(1):190. PMID:31829238 doi:10.1186/s13148-019-0760-8