| Modification Notes |
SUHW4 (suppressor of hairy wing homolog 4), also known as ZNF280D (zinc finger protein 280D) or ZNF634 (zinc finger protein 634), is a 979 amino acid nuclear protein that may function as a transcription factor. SUHW4 contains five C2H2-type zinc fingers and exists as five alternatively spliced isoforms. The gene that encodes SUHW4 contains 103,911 bases and maps to human chromosome 15q21.3. Encoding more than 700 genes, chromosome 15 is made up of approximately 106 million base pairs and is about 3% of the human genome. Angelman and Prader-Willi syndromes are associated with loss of function or deletion of genes in the 15q11-q13 region. In the case of Angelman syndrome, this loss is due to inactivity of the maternal 15q11-q13 encoded UBE3A gene in the brain by either chromosomal deletion or mutation. In cases of Prader-Willi syndrome, there is a partial or complete deletion of this region from the paternal copy of chromosome 15. Tay-Sachs disease and Marfan syndrome are also associated with chromosome 15 through the HEXA gene and the FBN1 gene, respectively. |