TMEM229B
Encyclopedia
TMEM229B is a human gene
Gene
A gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...

 which encodes a transmembrane protein
Transmembrane protein
A transmembrane protein is a protein that goes from one side of a membrane through to the other side of the membrane. Many TPs function as gateways or "loading docks" to deny or permit the transport of specific substances across the biological membrane, to get into the cell, or out of the cell as...

 of unknown function. This gene has eight aliases including C14orf83, FLJ33387, Q8NBD8, Hs.509707, Hs.712258, IPR010540, and CN083_HUMAN. The TMEM229B protein contains a domain of unknown function, part of the domain family DUF1113, spanning from amino acid
Amino acid
Amino acids are molecules containing an amine group, a carboxylic acid group and a side-chain that varies between different amino acids. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen...

s 87 to 135.

Features of the TMEM229B gene

The TMEM229B gene is located on the reverse strand of chromosome 14 at location 14q24.1 and spanning the chromosomal region from 67,936,983—67,982,021. Covering a total of 45,038 base pairs (bp) along the chromosome, the TMEM229B gene has a total of 3 exons in it's primary unspliced transcript mRNA of 4,068 bp. There are a total of 7 transcript variants for TMEM229B ranging in mRNA size from 519 bp to 5008 bp. The TMEM229B gene is flanked by phosphatidylinotisol glycan anchor class H (PIGH
PIGH
Phosphatidylinositol N-acetylglucosaminyltransferase subunit H is an enzyme that in humans is encoded by the PIGH gene. The PIGH gene is located on the reverse strand of chromosome 14 in humans, and is neighbored by TMEM229B.-Further reading:...

), a protein associated with the endoplasmic reticulum specifically GPI-anchor biosynthesis, and PLEK2 on its left. See Figure 1.0.

Expressed Sequence Tag
Expressed sequence tag
An expressed sequence tag or EST is a short sub-sequence of a cDNA sequence. They may be used to identify gene transcripts, and are instrumental in gene discovery and gene sequence determination. The identification of ESTs has proceeded rapidly, with approximately 65.9 million ESTs now available in...

 mapping of TMEM229B gene expression indicates that it is ubiquitously expressed throughout the body. TMEM229B is more heavily expressed in the parathyroid, skin, and thyroid
Thyroid
The thyroid gland or simply, the thyroid , in vertebrate anatomy, is one of the largest endocrine glands. The thyroid gland is found in the neck, below the thyroid cartilage...

 tissues, and moderately expressed in bone marrow, trachea, spleen, eye, brain, pancreas, mammary gland, intestine, liver, thymus, lymph node, ovarian, muscle, lung, blood, and kidney tissues. Expression of the TMEM229B gene increases in several disease states including amelanotic skin melanoma, B-cell neoplasm, breast carcinoma, Burkitt’s lymphoma, colorectal adenocarcinoma, carcinoma, cutaneous T cell lymphoma, esophageal carcinoma, gastric carcinoma, glioblastoma, liver carcinoma, lymphoma, melanoma, small cell lung carcinoma, T-cell acute lymphoblastic leukemia, thyroid carcinoma and Wilms tumor as found in several microarray
Microarray
A microarray is a multiplex lab-on-a-chip. It is a 2D array on a solid substrate that assays large amounts of biological material using high-throughput screening methods.Types of microarrays include:...

 experiments. Over-expression of the TMEM229B gene has not been linked as a causal factor in any of these disease states.

Features of the TMEM229B protein

The translated TMEM229B protein is a total of 167 amino acids long, with a predicted molecular weight of 19,531 Daltons
Daltons
Daltons Weekly is a newspaper published in England. It is published every Thursday.Established during the late 1860s by Herbert Dalton, Daltons Weekly was initially a single broadsheet listing 'Accommodation for Gentleman' in the then fashionable middle class suburbs around Vauxhall in South London...

.
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