WTAP

The Wilms tumor suppressor gene WT1 appears to play a role in both transcriptional and posttranscriptional regulation of certain cellular genes. This gene encodes a WT1-associating protein, which is a ubiquitously expressed nuclear protein. Like WT1 protein, this protein is localized throughout the nucleoplasm as well as in speckles and partially colocalizes with splicing factors. Alternative splicing of this gene results in three transcript variants, two of which encode the same isoform. [provided by RefSeq]

WTAP

Associated component of the WMM complex, a complex that mediates N6-methyladenosine (m6A) methylation of RNAs, a modification that plays a role in the efficiency of mRNA splicing and RNA processing (PubMed:29507755).
Required for accumulation of METTL3 and METTL14 to nuclear speckle (PubMed:24316715, PubMed:24407421, PubMed:24981863).
Acts as a mRNA splicing regulator (PubMed:12444081).
Regulates G2/M cell-cycle transition by binding to the 3' UTR of CCNA2, which enhances its stability (PubMed:17088532).
Impairs WT1 DNA-binding ability and inhibits expression of WT1 target genes (PubMed:17095724).

Biological Process cell cycle Source:UniProtKB-KW
Biological Process mRNA methylation Source:UniProtKB3 Publications
Biological Process mRNA processing Source:UniProtKB-KW
Biological Process regulation of alternative mRNA splicing, via spliceosome Source:UniProtKB1 Publication
Biological Process RNA splicing Source:UniProtKB-KW

Nucleus speckle
Nucleus, nucleoplasm
Cytoplasm
Mainly nuclear with some fraction located in the cytoplasm. ZC3H13 is required to anchor component of the MACOM subcomplex, such as VIRMA, in the nucleus.