C13orf46 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
Aliases | C13orf46 , uncharacterized LOC100507747, chromosome 13 open reading frame 46 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | HomoloGene: 139853 GeneCards: C13orf46 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Chromosome 13 Open Reading Frame 46 is a protein which in humans is encoded by the C13orf46 gene. [3] In humans, C13orf46 is ubiquitously expressed at low levels in tissues, including the lungs, stomach, prostate, spleen, and thymus. This gene encodes eight alternatively spliced mRNA transcript, which produce five different protein isoforms.
An alternative name for C13orf46 is LOC100507747. [4] C13orf46 spans 47,563 base pairs, contains 11 exons, and is on the minus strand of chromosome 13 at 13q34. [5] [6]
The neighboring genes around C13orf46 include LINC00454, LINC00452, SWINGN, RASA3, and LOC124903221. [7]
LINC00454 and LINC00452 (Long Intergenic NonProtein Coding RNA 454 & 452) are both long non-coding RNAs (lncRNA) that regulate epigenetic gene expression, chromatin remodeling, and levels of gene transcription and translation. [7] [8] [9] Both LINC00454 and LINC00452 expression are restricted to the testis. LINC00454 has been associated with Factor X Deficiency while LINC00452 has been found to promote ovarian carcinogenesis. [10] [11]
SWINGN (SWI/SNF Complex Interacting GAS6 Enhancer Non-Coding RNA) is also a lncRNA that neighbors C13orf46. [12] SWINGN regulates the activation of the GAS6 (Growth Arrest Specific 6) oncogene, by interacting with matrix associated and actin dependent regulators of chromatin. [13]
The RASA3 (RAS p21 Protein Activator 3) gene encodes the Ras GTPase activating protein. This protein binds inositol 1,3,4,5-tetrakisphosphate to stimulate the activity of Ras p21 and negatively regulates the Ras signaling pathway. [14] RASA3 is most highly expressed in fat, lymph nodes, and the spleen. The encoded protein is localized to the cell membrane.
Eight different transcript variants have been identified for C13orf46. [7] These transcript variants are alternatively spliced to include variations of 11 different exons. Depending on the different transcript variant that is translated, 5 different possible protein isoforms are encoded by C13orf46. The most common protein product encoded by C13orf46 is isoform 1, which is 212 amino acids long. [15]
Transcript Variant | mRNA Length (nt) | Protein Isoform | Protein Length (aa) | Molecular Weight (kDA) | Exon 1 (bp) | Exon 2 (bp) | Exon 3 (bp) | Exon 4 (bp) | Exon 5 (bp) | Exon 6 (bp) | Exon 7 (bp) | Exon 8 (bp) | Exon 9 (bp) | Exon 10 (bp) | Exon 11 (bp) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C13orf46transcript variant 1 | 3786 | C13orf46 protein isoform 1 | 212 | 23.4 | 269 | 52 | 166 | 48 | 48 | 68 | 3135 | ||||
C13orf46transcript variant X1 | 26461 | C13orf46 protein isoform X1 | 624 | 66.7 | 3269 | 252 | 1920 | 21020 | |||||||
C13orf46 transcript variant X2 | 26389 | C13orf46 protein isoform X1 | 624 | 66.7 | 3269 | 252 | 20903 | 1965 | |||||||
C13orf46 transcript variant X3 | 25642 | C13orf46 protein isoform X1 | 624 | 66.7 | 3269 | 252 | 19745 | 2376 | |||||||
C13orf46 transcript variant X4 | 26573 | C13orf46 protein isoform X2 | 587 | 62.8 | 3269 | 252 | 23052 | ||||||||
C13orf46 transcript variant X5 | 29437 | C13orf46 protein isoform X3 | 212 | 23.4 | 269 | 52 | 166 | 48 | 48 | 68 | 3337 | 25449 | |||
C13orf46 transcript variant X6 | 961 | C13orf46 protein isoform X4 | 192 | 21.1 | 269 | 52 | 166 | 48 | 48 | 68 | 310 | ||||
C13orf46 transcript variant X7 | 833 | C13orf46 protein isoform X5 | 175 | 18.9 | 269 | 52 | 166 | 48 | 246 | 52 |
The primary protein isoform of the C13orf46 gene consists of 212 amino acids. [15] [16] The longest encoded isoform, known as C13orf46 protein isoform X1, is 624 amino acids long. [17] Other protein isoforms encoded by the C13orf46 gene are similar to either of these two versions of the C13orf46 protein. Varying forms of the primary 212 amino acid protein is encoded by transcript variants 1, X5, X6, and X7. Variations of the longest C13orf46 protein isoform are encoded by transcript variants X1, X2, X3, and X4.
C13orf46 Isoform 1 has a theoretical isoelectric point of 4.84 and a predicted molecular weight of 23.4 kDA. [18] Higher relative amounts of glutamic acid (15.1%) and aspartic acid (7.5%) are found within this isoform, while the amino acids phenylalanine (0.9%) and threonine (0.5%) are found to be less abundant within the protein composition. [19] C13orf46 Isoform 1 also has a glutamic acid rich region where multiple glutamic acid and lysine doublets are present, some of which occur side by side. A total of 14 multiplets are found within the protein overall, 12 of which are charged. [19] C13orf46 Isoform 1 is not predicted to contain any charge clusters, hydrophobic segments, or transmembrane segments.
C13orf46 Protein Isoform 1 is predicted to consist of 7 alpha helices and 2 beta strands in addition to regions of random free coils. [21] [20]
C13orf46 Isoform 1 has two identified disordered regions spanning between amino acid residues 1 through 148 and 168 to 190. [22] In addition, C13orf46 Isoform 1 has a glutamic acid rich region spanning along amino acid residues 109 to 191. [19]
C13orf46 Isoform 1 is predicted to undergo several post-translational modifications such as phosphorylation, [23] [24] [25] O-GlcNAcylation, [24] mucin type GalNAc O-glycosylation, [24] palmitoylation, [26] [27] and sumoylation. [28] PKA, PKC, CKII, PKG, GSK3, cdc2, RSK, and ATM are kinases that are predicted to bind and phosphorylate the human C13orf46 Isoform 1. There is also one predicted phosphoprotein-binding phosphosite on the protein. [29]
C13orf46 Isoform X1 has a theoretical isoelectric point of 9.33 and a predicted molecular weight of 66.7 kDA. [18] C13orf46 Isoform X1 protein contains much higher relative amounts of serine (18.4%) and leucine (18.8%) compared to other human proteins and also has high amounts of proline (14.4%). [19] Roughly equal amounts of serine and leucine are found within the protein. C13orf46 Isoform X1 protein is also composed of lower than usual amounts of glutamic acid (1.3%), phenylalanine (0.3%), and lysine (0.5%) and also has low amounts of valine (2.4%). [19] Asparagine is not found within the C13orf46 Isoform X1 protein. Within this isoform, 100 amino acid multiplets are found, 5 of which are charged. No charge clusters, hydrophobic segments or transmembrane domains are predicted within the protein. [19]
C13orf46 Isoform X1 is predicted to consist of a combination of alpha helices, beta sheets, and free random coil regions. [33] There are 22 predicted alpha helices and 18 predicted beta sheets within the predicted structure of C13orf46 Isoform X1.
C13orf46 Isoform X1 contains a series of 26 repeats, which vary in sequence structure and length. [19] [35] Out of the 26 identified repeat sequences, 14 sequences consisted of 20 amino acids, while 5 of the repeats consisted of 21 amino acids, 3 repeats consisted of 22 amino acids, and 4 repeats were 23 amino acids long. [36] Each repeat sequence beings with either the amino acid methionine, isoleucine, or leucine. The main sequence structure of the amino acids within the 26 repeats is MLLLSTGCSSSPPDAPPLHQ. [34] An alignment of the 26 repeats indicate that the most conserved part of the repeat sequence occurs in the middle of the sequences with a triplet of the amino acid serine. [36] [37]
C13orf46 Isoform X1 has a predicted a dimerization domain between amino acids residues 69 to 87. [38]
C13orf46 Isoform X1 is predicted to undergo several post-translational modifications such as phosphorylation, [23] [24] [25] O-GlcNAcylation, [24] mucin type GalNAc O-glycosylation, [24] palmitoylation, [26] [27] and sumoylation. [28] The human C13orf46 Isoform X1 protein also has 11 predicted PPBD-specific binding phosphosites. [29] The most conserved phosphorylation sites occur on the third serine of 23 out of 26 repeats. PKC, PKG, PKA, p38MAPK, GSK3, DNAPK, CKI, cdk5, CKII, and cdc2 are kinases predicted to bind and phosphorylate the human C13orf46 Isoform X1 protein. [24] Predicted phosphorylated sites are also predicted to be sites where O-glycosylation can occur. [24]
C13orf46 protein isoform X1 has several predicted S-phase cyclin binding sites, in addition to MAPK and p38 interacting motifs. [40]
RNA sequencing shows the expression of C13orf46 is most observed in the lungs, prostate, pancreas, and stomach at intermediate levels. [7] [41] C13orf46 also has lower expression levels in the bone marrow, spleen, thyroid, lymph node, gall bladder, and thymus.
C13orf46 Isoform 1 is predicted to be mostly localized within the nucleus. [42] [24] This protein isoform may also be localized on the cell membrane. [24] C13orf46 Isoform X1 is predicted to be mostly localized within the nucleus [42] [24] or cytoplasm. [24]
The C13orf46 gene has orthologs to the human C13orf46 isoform 1 protein and C13orf46 isoform X1 protein, found within primates, mammals, birds, reptiles, fish, and invertebrates. [43]
Orthologs to the human C13orf46 isoform 1 protein are only known to be found in primates and mammals, suggesting that this part of the C13orf46 gene encoding the C13orf46 isoform 1 protein appeared around 99 million years ago. [43]
Genus and Species | Common Name | Taxonomic Group | Median Date of Divergence (mya) | Accession # | Sequence Length (aa) | Sequence Identity (%) | Sequence Similarity (%) |
---|---|---|---|---|---|---|---|
Homo sapiens | Human | Primates | 0 | NP_001352384.1 | 212 | 100.0% | 100.0% |
Pan paniscus | Bonobo | Primates | 6.4 | XP_034792262.1 | 212 | 98.1% | 98.1% |
Gorilla gorilla gorilla | Western Lowland Gorilla | Primates | 8.6 | XP_030857272.1 | 212 | 95.3% | 98.1% |
Papio anubis | Olive Baboon | Primates | 28.9 | XP_021785522.1 | 212 | 88.7% | 92.5% |
Cercocebus atys | Sooty Mangabey | Primates | 28.9 | XP_011913555.1 | 192 | 87.3% | 91.0% |
Macaca mulatta | Rhesus Macaque | Primates | 28.9 | XP_014977020.1 | 192 | 79.2% | 82.5% |
Ursus arctos | Brown Bear | Carnivora | 87 | XP_048071403.1 | 222 | 59.2% | 71.3% |
Callorhinus ursinus | Northern Fur Seal | Carnivora | 87 | XP_025730354.1 | 184 | 57.5% | 65.6% |
Lontra canadensis | Northern River Otter | Carnivora | 87 | XP_032736869.1 | 232 | 46.4% | 53.6% |
Odobenus rosmarus divergens | Pacific Walrus | Carnivora | 87 | XP_004412327.1 | 310 | 36.4% | 41.7% |
Loxodonta africana | African Bush Elephant | Proboscidea | 87 | XP_010591994.1 | 214 | 62.6% | 73.4% |
Choloepus didactylus | Two-Toed Sloth | Pilosa | 87 | XP_037662557.1 | 214 | 60.7% | 73.8% |
Orycteropus afer afer | Aardvark | Tubulidentata | 87 | XP_007940592.1 | 214 | 60.0% | 69.3% |
Castor canadensis | North American Beaver | Rodentia | 87 | XP_020020073.1 | 217 | 59.6% | 72.0% |
Pteropus giganteus | Indian Flying Fox | Chiroptera | 94 | XP_039734682.1 | 213 | 67.6% | 76.5% |
Eptesicus fuscus | Big Brown Bat | Chiroptera | 94 | XP_028004567.1 | 214 | 65.9% | 75.2% |
Trichechus manatus latirostris | Antillean Manatee | Sirenia | 94 | XP_023589319.1 | 214 | 63.1% | 74.3% |
Balaenoptera musculus | Blue Whale | Cetacea | 94 | XP_036687016.1 | 207 | 57.3% | 69.0% |
Urocitellus parryii | Arctic Ground Squirrel | Rodentia | 94 | XP_026237314.1 | 216 | 61.9% | 72.0% |
Sciurus carolinensis | Eastern Gray Squirrel | Rodentia | 94 | XP_047409299.1 | 238 | 55.6% | 66.1% |
Ictidomys tridecemlineatus | Thirteen-Lined Ground Squirrel | Rodentia | 94 | XP_013221671.2 | 276 | 49.3% | 57.6% |
Chinchilla lanigera | Long-Tailed Chinchilla | Rodentia | 99 | XP_005373979.1 | 217 | 55.5% | 66.4% |
Arvicola amphibius | European Water Vole | Rodentia | 99 | XP_038185081.1 | 237 | 53.1% | 65.1% |
Mesocricetus auratus | Golden Hamster | Rodentia | 99 | XP_005082676.1 | 237 | 51.0% | 61.8% |
Arvicanthis niloticus | African Grass Rat | Rodentia | 99 | XP_034376776.1 | 241 | 50.0% | 61.9% |
Predicted orthologs to the human C13orf46 isoform X1 protein are found in primates, mammals, birds, reptiles, fish, and as far as back as invertebrates of the bacterial phylum Legionella . [43]
Genus and Species | Common Name | Taxonomic Group | Median Date of Divergence (mya) | Accession # | Sequence Length (aa) | Sequence Identity (%) | Sequence Similarity (%) |
---|---|---|---|---|---|---|---|
Homo sapiens | Human | Primates | 0 | XP_047285937.1 | 624 | 100.0% | 100.0% |
Pan troglodytes | Chimpanzee | Primates | 6.4 | XP_024209271.1 | 720 | 54.9% | 61.0% |
Microtus ochrogaster | Prairie Vole | Rodentia | 87 | KAH0512811.1 | 936 | 10.3% | 15.8% |
Phoca vitulina | European Harbour Seal | Carnivora | 94 | XP_032285971.1 | 510 | 18.8% | 30.1% |
Orcinus orca | Killer Whale | Cetacea | 94 | XP_049556886.1 | 348 | 14.2% | 19.3% |
Myotis davidii | Whiskered Bat | Chiroptera | 94 | ELK34143.1 | 530 | 26.1% | 33.6% |
Phasianus colchicus | Ring-Necked Pheasant | Galliformes | 319 | XP_031464934.1 | 499 | 23.2% | 33.5% |
Corvus hawaiiensis | Hawaiian Crow | Passeriformes | 319 | XP_048182949.1 | 316 | 17.3% | 23.4% |
Hirundo rustica | Barn Swallow | Passeriformes | 319 | XP_039927228.1 | 1185 | 10.0% | 14.9% |
Pelodiscus sinensis | Chinese Soft-Shelled Turtle | Testudines | 319 | XP_025042872.1 | 554 | 17.3% | 26.4% |
Rana temporaria | Grass Frog | Anura | 353 | XP_040201915.1 | 1147 | 12.9% | 19.7% |
Bufo bufo | Common Toad | Anura | 353 | XP_040296088.1 | 259 | 12.3% | 19.7% |
Lithobates catesbeianus | American Bullfrog | Anura | 353 | PIO00716.1 | 245 | 12.0% | 18.5% |
Larimichthys crocea | Large Yellow Croaker | Perciformes | 431 | KAE8277666.1 | 478 | 28.9% | 37.9% |
Coregonus clupeaformis | Lake Whitefish | Salmoniformes | 431 | XP_041725148.2 | 609 | 27.0% | 26.0% |
Austrofundulus limnaeus | Killifish | Cyprinodontiformes | 431 | XP_013856594.1 | 244 | 22.7% | 25.4% |
Oncorhynchus tshawytscha | Chinook Blackmouth Salmon | Salmoniformes | 431 | XP_042158955.1 | 714 | 23.5% | 26.2% |
Salmo salar | Atlantic Salmon | Salmoniformes | 431 | XP_045562793.1 | 324 | 19.9% | 20.9% |
Prochilodus magdalenae | Columbian Freshwater Fish | Characiformes | 431 | KAI4891011.1 | 388 | 18.6% | 25.4% |
Oncorhynchus mykiss | Rainbow Trout | Salmoniformes | 431 | XP_036845983.1 | 332 | 18.5% | 27.3% |
Chiloscyllium punctatum | Brownbanded Bamboo Shark | Orectolobiformes | 464 | GCC17506.1 | 625 | 26.7% | 26.8% |
Biomphalaria glabrata | Freshwater Snail | Basommatophora | 694 | KAI8768938.1 | 308 | 14.4% | 18.9% |
Bulinus truncatus | Freshwater Snail | Basommatophora | 694 | KAH9489149.1 | 879 | 10.3% | 30.7% |
Owenia fusiformis | Bristle Worm | Canalipalpata | 694 | CAH1787814.1 | 224 | 14.3% | 15.2% |
Legionella fallonii | Legionella | Legionellales | 3036 | WP_045095679.1 | 695 | 15.2% | 30.7% |
Human C13orf46 isoform X1 protein has one predicted paralog among mucins, specifically mucin-1. [43] Mucins play a role in creating protective mucus barriers on epithelial tissues. [45] The MUC1 gene is located on chromosome 1 at 1q22, contains 11 exons, and has 22 different isoforms. [46] Mucins are highly O-glycosylated and contain tandem repeat domains abundant with proline, serine, and threonine. [47] Surrounding the repeat domains are cysteine rich regions. Mucin genes do not always share a common ancestry, are prone to convergent evolution, and are grouped based on their functionality instead of common evolutionary history. [48]
Chromosome 16 open reading frame 95 (C16orf95) is a gene which in humans encodes the protein C16orf95. It has orthologs in mammals, and is expressed at a low level in many tissues. C16orf95 evolves quickly compared to other proteins.
Chromosome 10 open reading frame 67 (C10orf67), also known as C10orf115, LINC01552, and BA215C7.4, is an un-characterized human protein-coding gene. Several studies indicate a possible link between genetic polymorphisms of this and several other genes to chronic inflammatory barrier diseases such as Crohn's Disease and sarcoidosis.
Chromosome 6 open reading frame 62 (C6orf62), also known as X-trans-activated protein 12 (XTP12), is a gene that encodes a protein of the same name. The encoded protein is predicted to have a subcellular location within the cytosol.
Chromosome 16 open reading frame 46 is a protein of yet to be determined function in Homo sapiens. It is encoded by the C16orf46 gene with NCBI accession number of NM_001100873. It is a protein-coding gene with an overlapping locus.
C15orf39 is a protein that in humans is encoded by the Chromosome 15 open reading frame 15 (C15orf39) gene.
Chromosome 4 open reading frame 51 (C4orf51) is a protein which in humans is encoded by the C4orf51 gene.
Cilia- and flagella-associated protein 299 (CFAP299), is a protein that in humans is encoded by the CFAP299 gene. CFAP299 is predicted to play a role in spermatogenesis and cell apoptosis.
Chromosome 1 open reading frame (C1orf167) is a protein which in humans is encoded by the C1orf167 gene. The NCBI accession number is NP_001010881. The protein is 1468 amino acids in length with a molecular weight of 162.42 kDa. The mRNA sequence was found to be 4689 base pairs in length.
C1orf122 is a gene in the human genome that encodes the cytosolic protein ALAESM.. ALAESM is present in all tissue cells and highly up-regulated in the brain, spinal cord, adrenal gland and kidney. This gene can be expressed up to 2.5 times the average gene in its highly expressed tissues. Although the function of C1orf122 is unknown, it is predicted to be used for mitochondria localization.
C7orf50 is a gene in humans that encodes a protein known as C7orf50. This gene is ubiquitously expressed in the kidneys, brain, fat, prostate, spleen, among 22 other tissues and demonstrates low tissue specificity. C7orf50 is conserved in chimpanzees, Rhesus monkeys, dogs, cows, mice, rats, and chickens, along with 307 other organisms from mammals to fungi. This protein is predicted to be involved with the import of ribosomal proteins into the nucleus to be assembled into ribosomal subunits as a part of rRNA processing. Additionally, this gene is predicted to be a microRNA (miRNA) protein coding host gene, meaning that it may contain miRNA genes in its introns and/or exons.
Uncharacterized protein C17orf78 is a protein encoded by the C17orf78 gene in humans. The name denotes the location of the parent gene, being at the 78th open reading frame, on the 17th human chromosome. The protein is highly expressed in the small intestine, especially the duodenum. The function of C17orf78 is not well defined.
Leucine rich single-pass membrane protein 2 is a single-pass membrane protein rich in leucine, that in humans is encoded by the LSMEM2 gene. The LSMEM2 protein is conserved in mammals, birds, and reptiles. In humans, LSMEM2 is found to be highly expressed in the heart, skeletal muscle and tongue.
Chromosome 9 open reading frame 85, commonly known as C9orf85, is a protein in Homo sapiens encoded by the C9orf85 gene. The gene is located at 9q21.13. When spliced, four different isoforms are formed. C9orf85 has a predicted molecular weight of 20.17 kdal. Isoelectric point was found to be 9.54. The function of the gene has not yet been confirmed, however it has been found to show high levels of expression in cells of high differentiation.
C6orf136 is a protein in humans encoded by the C6orf136 gene. The gene is conserved in mammals, mollusks, as well some porifera. While the function of the gene is currently unknown, C6orf136 has been shown to be hypermethylated in response to FOXM1 expression in Head Neck Squamous Cell Carcinoma (HNSCC) tissue cells. Additionally, elevated expression of C6orf136 has been associated with improved survival rates in patients with bladder cancer. C6orf136 has three known isoforms.
C11orf98 is a protein-encoding gene on chromosome 11 in humans of unknown function. It is otherwise known as c11orf48. The gene spans the chromosomal locus from 62,662,817-62,665,210. There are 4 exons. It spans across 2,394 base pairs of DNA and produces an mRNA that is 646 base pairs long.
Chromosome 12 Open Reading Frame 50 (C12orf50) is a protein-encoding gene which in humans encodes for the C12orf50 protein. The accession id for this gene is NM_152589. The location of C12orf50 is 12q21.32. It covers 55.42 kb, from 88429231 to 88373811, on the reverse strand. Some of the neighboring genes to C12orf50 are RPS4XP15, LOC107984542, and C12orf29. RPS4XP15 is upstream C12orf50 and is on the same strand. LOC107984542 and C12orf29 are both downstream. LOC107984542 is on the opposite strand while C12orf29 is on the same strand. C12orf50 has six isoforms. This page is focusing on isoform X1. C12orf50 isoform X1 is 1711 nucleotides long and has a protein with a length of 414 aa.
TEKTIP1, also known as tektin-bundle interacting protein 1, is a protein that in humans is encoded by the TEKTIP1 gene.
THAP domain-containing protein 3 (THAP3) is a protein that, in Homo sapiens (humans), is encoded by the THAP3 gene. The THAP3 protein is as known as MGC33488, LOC90326, and THAP domain-containing, apoptosis associated protein 3. This protein contains the Thanatos-associated protein (THAP) domain and a host-cell factor 1C binding motif. These domains allow THAP3 to influence a variety of processes, including transcription and neuronal development. THAP3 is ubiquitously expressed in H. sapiens, though expression is highest in the kidneys.
Chromosome 5 Open Reading Frame 47, or C5ORF47, is a protein which, in humans, is encoded by the C5ORF47 gene. It also goes by the alias LOC133491. The human C5ORF47 gene is primarily expressed in the testis.
Leucine-rich Repeat-containing Protein 74A (LRRC74A), is a protein encoded by the LRRC74A gene. The protein LRRC74A is localized in the cytoplasm. It has a calculated molecular weight of approximately 55 kDa. The LRRC74A protein is nominally expressed in the testis, salivary gland, and pancreas.