OMIA 000202-9823 : Coat colour, oculocutaneous albinism type I (OCA1), TYR-related in Sus scrofa

In other species: domestic cat , cattle , dog , rabbit , water buffalo , ass , Japanese medaka , American mink , humpback whale , domestic ferret , domestic guinea pig , Tufted capuchin , dark-spotted frog , Japanese wrinkled frog , Rice frog , lion , Mongolian gerbil , red fox , hamadryas baboon , red deer , Japanese raccoon dog , Japanese ratsnake

Possibly relevant human trait(s) and/or gene(s)s (MIM numbers): 203100 (trait) , 606952 (trait) , 606933 (gene)

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal Recessive

Considered a defect: no

Key variant known: no

Cross-species summary: Congenital lack of pigment in most parts of the body. Due to a non-functional form of the enzyme tyrosinase. Also known as Oculocutaneous albinism (OCA), Acromelanism and as the Himalayan coat-colour pattern

Species-specific description: There are no reports of albinism occurring naturally in pigs. This entry has been created because "transgenic" albino pigs have been produced by knocking out the TYR gene, using CRISPR/Cas9-mediated gene-targeted pigs via somatic cell nuclear transfer (Zhou et al., 2015): Genetically-modifed organism; GMO

Molecular basis: Zhou et al. (2015) "applied Cas9/sgRNAs to effectively direct gene editing in porcine fetal fibroblasts and then mutant cell colonies were used as donor to generate homozygous gene-targeted pigs through single round of SCNT. As a result, . . [they] successfully obtained 15 tyrosinase (TYR) biallelic mutant pigs. . . . They were all homozygous and no off-target mutagenesis was detected by comprehensive analysis. TYR (-/-) pigs showed typical albinism".

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
TYR tyrosinase Sus scrofa 9 NC_010451.4 (22517047..22604290) TYR Homologene, Ensembl, NCBI gene

References


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.
2021 Zhang, J., Khazalwa, E.M., Abkallo, H.M., Zhou, Y., Nie, X., Ruan, J., Zhao, C., Wang, J., Xu, J., Li, X., Zhao, S., Zuo, E., Steinaa, L., Xie, S. :
The advancements, challenges, and future implications of the CRISPR/Cas9 system in swine research. J Genet Genomics 48:347-360, 2021. Pubmed reference: 34144928. DOI: 10.1016/j.jgg.2021.03.015.
2015 Zhou, X., Xin, J., Fan, N., Zou, Q., Huang, J., Ouyang, Z., Zhao, Y., Zhao, B., Liu, Z., Lai, S., Yi, X., Guo, L., Esteban, M.A., Zeng, Y., Yang, H., Lai, L. :
Generation of CRISPR/Cas9-mediated gene-targeted pigs via somatic cell nuclear transfer. Cell Mol Life Sci 72:1175-84, 2015. Pubmed reference: 25274063. DOI: 10.1007/s00018-014-1744-7.

Edit History


  • Created by Frank Nicholas on 24 Apr 2015
  • Changed by Frank Nicholas on 24 Apr 2015
  • Changed by Frank Nicholas on 08 Aug 2017
  • Changed by Imke Tammen2 on 25 Jun 2021