Gene Name	CMAHP
Gene ID	8418
Gene Full Name	cytidine monophospho-N-acetylneuraminic acid hydroxylase, pseudogene
Gene Alias	CMAH|CSAH
Transcripts	ENSG00000293489
Virus	HPV
Gene Type	pseudo
HGNC ID	HGNC:2098
OMIM ID	603209
Summary	Sialic acids are terminal components of the carbohydrate chains of glycoconjugates involved in ligand-receptor, cell-cell, and cell-pathogen interactions. The two most common forms of sialic acid found in mammalian cells are N-acetylneuraminic acid (Neu5Ac) and its hydroxylated derivative, N-glycolylneuraminic acid (Neu5Gc). Studies of sialic acid distribution show that Neu5Gc is not detectable in normal human tissues although it was an abundant sialic acid in other mammals. Neu5Gc is, in actuality, immunogenic in humans. The absense of Neu5Gc in humans is due to a deletion within the human gene CMAH encoding cytidine monophosphate-N-acetylneuraminic acid hydroxylase, an enzyme responsible for Neu5Gc biosynthesis. Sequences encoding the mouse, pig, and chimpanzee hydroxylase enzymes were obtained by cDNA cloning and found to be highly homologous. However, the homologous human cDNA differs from these cDNAs by a 92-bp deletion in the 5' region. This deletion, corresponding to exon 6 of the mouse hydroxylase gene, causes a frameshift mutation and premature termination of the polypeptide chain in human. It seems unlikely that the truncated human hydroxylase mRNA encodes for an active enzyme explaining why Neu5Gc is undetectable in normal human tissues. Human genomic DNA also shows evidence of this deletion which does not occur in the genomes of African great apes. Nonetheless, the CMAH gene maps to 6p21.32 in humans and great apes indicating that mutation of the CMAH gene occurred following human divergence from chimpanzees and bonobos. [provided by RefSeq, Jul 2008]

Integration Table: if previous studies reported that target gene was altered by virus integration events, the overlap between VISs in this literature and Cistrome factors was listed in this section

DVID	Chromosome	HM	TFBS	CA	Sum of Overlapped Records	Detail
5006765	chr6	25	7	0	32	View
5006766	chr6	26	7	0	33	View
5013627	chr6	14	6	1	21	View
5013628	chr6	116	7	2	125	View
5013629	chr6	42	5	0	47	View
5013630	chr6	191	64	7	262	View

Data ID	Experiment type	Sample number	Platform
C   GSE183048	Chip-seq	24	Illumina HiSeq 4000 (Homo sapiens)
GSE169622	Methylation profiling (Array)	9	Infinium MethylationEPIC
GSE65858	Expression array	270	Illumina HumanHT-12 V4.0 expression beadchip
GSE181805	Expression array	25	[HTA-2_0] Affymetrix Human Transcriptome Array 2.0 [transcript (gene) version]
GSE196215	RNA-seq	8	Illumina NovaSeq 6000 (Homo sapiens)
GSE138080	Expression array	35	Agilent-014850 Whole Human Genome Microarray 4x44K G4112F (Feature Number version)
GSE140662	Expression array	8	[HTA-2_0] Affymetrix Human Transcriptome Array 2.0 [transcript (gene) version]
GSE55542	Expression array	36	Agilent-039494 SurePrint G3 Human GE v2 8x60K Microarray 039381 (Probe Name version)
C   GSE143026	ATAC-seq;Chip-seq;RNA-seq	30	Illumina HiSeq 2500 (Homo sapiens)
TCGA_CESC	DNA methylation sequencing;RNA-seq	288	TCGA
GSE51993	Expression array	48	Illumina Human v2 MicroRNA expression beadchip;Illumina HumanHT-12 V4.0 expression beadchip
GSE55550	Expression array	155	Agilent-039494 SurePrint G3 Human GE v2 8x60K Microarray 039381 (Probe Name version)
GSE165883	RNA-seq	20	Illumina NextSeq 500 (Homo sapiens)

• Genome binding/occupancy profiling

When the gene can detect a peak in the dataset, a peak plot will be displayed.

> Dataset: GSE183048 - CMAHP peak across samples

Peak Plot

> Dataset: GSE143026 - CMAHP peak across samples

Peak Plot