TEX55 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
Aliases | TEX55, TSCPA, chromosome 3 open reading frame 30, testis expressed 55, C3orf30 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | MGI: 1921913; HomoloGene: 17614; GeneCards: TEX55; OMA: TEX55 - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Testis expressed 55 (TEX55) is a human protein that is encoded by the C3orf30 gene located on the forward strand of human chromosome three, open reading frame 30 (3q13.32). [5] [6] TEX55 ( accession number: NM_152539.3) is also known as Testis-specific conserved, cAMP-dependent type II PK anchoring protein (TSCPA), and uncharacterized protein C3orf30. [6]
The TEX55 gene is 13,893 bp and spans from base pair 119,146,151 to 119,160,042. [6] This gene is flanked by immunoglobulin superfamily member 11 and Uroplakin1B. [5]
The promoter region of TEX55 has multiple SRY box-6 and SOX/SRY-sex/testis determining and related HMG box transcription factor binding sites, as well as an X-linked zinc finger binding site. This indicates that the sex chromosomes may play a role in post-translational modification and expression. [7]
The TEX55 protein has no known human paralogs. [8]
TEX55 has orthologs in many mammals including, bats, dolphins, and even aardvarks. [8] According to BLAST the TEX55 protein cannot be found outside of clade Mammalia. [8] The most distant ortholog, found using BLAST, was in the aardvark, which is thought to have diverged an estimated 105 MYA. [9] However, according to GeneCard, distant orthologs have also been found in chickens, lizards (Anolis carolinensis), and zebrafish. [6]
The mRNA of TEX55 is 1800 base pairs long and has three exons. [6] According to GeneCard, the TEX55 mRNA has 3 theoretical splice forms, but only the one containing all three exons have been studied and characterized. [6] The 5’ UTR of the mRNA has an RFX1 binding site, which binds to a stem-loop structure just upstream of the start codon, used to activate transcription. [7] [10]
The translated protein of the TEX 55 mRNA is 536 AA, a predicted molecular weight of 60 kD, had an isoelectric point of 5.51, and is highly conserved at the C-terminus. [11] Tex55 has a slightly high amount of Glutamine and a slightly low amount of Leucine, which compared to the protein database swp23s.q. [11] Multiple sequence alignment of TEX55 and 20 mammalian orthologs show that there are 28 residues, concentrated in the C-terminus, that are conserved between all proteins. [8] [12] The highly conserved residues are outlined in the conceptual translation and multiple sequence analysis. Through function-region analysis, researchers found that this protein may act as an anchoring protein of cAMP-dependent type-II PK, and might be an A-kinase anchoring proteins. [13] [14]
Analysis of the sumoylation sites indicate that Lys 14 has a high probability of being sumoylated. [17] The TEX55 protein has a high number of potential phosphorylation/O-glycosylation sites. [18] [19]
All secondary structure prediction analysis indicate that the C-terminus of Tex 55 has a high probability of being an
alpha-helix, and indicate that there is little to no amount of beta-sheets. Secondary structure analysis tools predict that the majority of the Tex 55 protein is coiled domains, and alpha-helices.
Tertiary structures of TEX55 was generated using Phyre2. The C-terminus, which is highly conserved, was calculated to have a 30 residue alpha-helix that has relatively high confidence (82.3%). The highly conserved, high-confidence, alpha-helix is colored in red in the 3D structure image of TEX55 to the above. The overall tertiary structure of TEX55 is globular.
Tex55 has two motifs according to GeneCard: EF-Hand Calcium Binding Domain 10 and Uroplakin 1B, both of which are found in the middle of the protein. [6] Uroplakin 1B is known to regulate cell development, activation, growth, and motility. [20] This could indicate why abnormalities in TEX55 expression leads to sperm with altered morphology. [13] [21]
Analysis the cellular localization probability of Tex55 and its orthologs indicate that it is most likely located in the nucleus of the cell. Below is a list of orthologs and the probability of finding that protein in the specified cellular location. [22]
Organism | Nucleus | Cytoplasm | Cytoskeletal | Golgi | Mitochondria | Plasma Membrane |
---|---|---|---|---|---|---|
Human | 43.5% | 34.8% | 13.0% | 0% | 8.7% | 0% |
Vampire Bat | 60.9% | 17.4% | 13.0% | 4.3% | 0% | 4.3% |
Tree Shrew | 82.6% | 17.4% | 0% | 0% | 8.7% | 0% |
Cat | 73.9% | 17.4% | 0% | 0% | 8.7% | 0% |
Southern White Rhino | 65.2% | 17.4% | 4.3% | 0% | 8.7% | 4.3% |
Lemur | 56.5% | 30.4% | 13.0% | 0% | 0% | 0% |
Beluga Whale | 52.2% | 26.1% | 13.0% | 0% | 4.3% | 4.3% |
Expression of TEX55 mRNA can be found in most tissues in the human body, from the brain to the prostate. [5] However, the protein produced by this mRNA has been shown to be produced mainly in the testis of mammals, according to NCBI. [5] Analysis done by the Human Protein Atlas indicates that the TEX55 protein can be found not only in the testis, but also the bronchus, fallopian tubes, and endometrium. [23]
Being produced mainly in the testis of mammals, researchers believe that the protein product of TEX55 plays a role in spermatogenesis. [13] It has been shown that individuals with Cryptorchidism and Sertoli-cell-only syndrome, which are both associated with sterility, do not produce this protein in their testis. [13] Microarray analysis of individuals with Teratozoospermia, a condition that is characterized by ~96% of sperm morphology being altered, indicates that TEX55 expression is reduced by ~20%. [21] [24] In clinical research, the TEX55 protein products have been detected in mice starting at 38 days old, then up regulated for at least 6 month. [13]
TEX55 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
Aliases | TEX55, TSCPA, chromosome 3 open reading frame 30, testis expressed 55, C3orf30 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | MGI: 1921913; HomoloGene: 17614; GeneCards: TEX55; OMA: TEX55 - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Testis expressed 55 (TEX55) is a human protein that is encoded by the C3orf30 gene located on the forward strand of human chromosome three, open reading frame 30 (3q13.32). [5] [6] TEX55 ( accession number: NM_152539.3) is also known as Testis-specific conserved, cAMP-dependent type II PK anchoring protein (TSCPA), and uncharacterized protein C3orf30. [6]
The TEX55 gene is 13,893 bp and spans from base pair 119,146,151 to 119,160,042. [6] This gene is flanked by immunoglobulin superfamily member 11 and Uroplakin1B. [5]
The promoter region of TEX55 has multiple SRY box-6 and SOX/SRY-sex/testis determining and related HMG box transcription factor binding sites, as well as an X-linked zinc finger binding site. This indicates that the sex chromosomes may play a role in post-translational modification and expression. [7]
The TEX55 protein has no known human paralogs. [8]
TEX55 has orthologs in many mammals including, bats, dolphins, and even aardvarks. [8] According to BLAST the TEX55 protein cannot be found outside of clade Mammalia. [8] The most distant ortholog, found using BLAST, was in the aardvark, which is thought to have diverged an estimated 105 MYA. [9] However, according to GeneCard, distant orthologs have also been found in chickens, lizards (Anolis carolinensis), and zebrafish. [6]
The mRNA of TEX55 is 1800 base pairs long and has three exons. [6] According to GeneCard, the TEX55 mRNA has 3 theoretical splice forms, but only the one containing all three exons have been studied and characterized. [6] The 5’ UTR of the mRNA has an RFX1 binding site, which binds to a stem-loop structure just upstream of the start codon, used to activate transcription. [7] [10]
The translated protein of the TEX 55 mRNA is 536 AA, a predicted molecular weight of 60 kD, had an isoelectric point of 5.51, and is highly conserved at the C-terminus. [11] Tex55 has a slightly high amount of Glutamine and a slightly low amount of Leucine, which compared to the protein database swp23s.q. [11] Multiple sequence alignment of TEX55 and 20 mammalian orthologs show that there are 28 residues, concentrated in the C-terminus, that are conserved between all proteins. [8] [12] The highly conserved residues are outlined in the conceptual translation and multiple sequence analysis. Through function-region analysis, researchers found that this protein may act as an anchoring protein of cAMP-dependent type-II PK, and might be an A-kinase anchoring proteins. [13] [14]
Analysis of the sumoylation sites indicate that Lys 14 has a high probability of being sumoylated. [17] The TEX55 protein has a high number of potential phosphorylation/O-glycosylation sites. [18] [19]
All secondary structure prediction analysis indicate that the C-terminus of Tex 55 has a high probability of being an
alpha-helix, and indicate that there is little to no amount of beta-sheets. Secondary structure analysis tools predict that the majority of the Tex 55 protein is coiled domains, and alpha-helices.
Tertiary structures of TEX55 was generated using Phyre2. The C-terminus, which is highly conserved, was calculated to have a 30 residue alpha-helix that has relatively high confidence (82.3%). The highly conserved, high-confidence, alpha-helix is colored in red in the 3D structure image of TEX55 to the above. The overall tertiary structure of TEX55 is globular.
Tex55 has two motifs according to GeneCard: EF-Hand Calcium Binding Domain 10 and Uroplakin 1B, both of which are found in the middle of the protein. [6] Uroplakin 1B is known to regulate cell development, activation, growth, and motility. [20] This could indicate why abnormalities in TEX55 expression leads to sperm with altered morphology. [13] [21]
Analysis the cellular localization probability of Tex55 and its orthologs indicate that it is most likely located in the nucleus of the cell. Below is a list of orthologs and the probability of finding that protein in the specified cellular location. [22]
Organism | Nucleus | Cytoplasm | Cytoskeletal | Golgi | Mitochondria | Plasma Membrane |
---|---|---|---|---|---|---|
Human | 43.5% | 34.8% | 13.0% | 0% | 8.7% | 0% |
Vampire Bat | 60.9% | 17.4% | 13.0% | 4.3% | 0% | 4.3% |
Tree Shrew | 82.6% | 17.4% | 0% | 0% | 8.7% | 0% |
Cat | 73.9% | 17.4% | 0% | 0% | 8.7% | 0% |
Southern White Rhino | 65.2% | 17.4% | 4.3% | 0% | 8.7% | 4.3% |
Lemur | 56.5% | 30.4% | 13.0% | 0% | 0% | 0% |
Beluga Whale | 52.2% | 26.1% | 13.0% | 0% | 4.3% | 4.3% |
Expression of TEX55 mRNA can be found in most tissues in the human body, from the brain to the prostate. [5] However, the protein produced by this mRNA has been shown to be produced mainly in the testis of mammals, according to NCBI. [5] Analysis done by the Human Protein Atlas indicates that the TEX55 protein can be found not only in the testis, but also the bronchus, fallopian tubes, and endometrium. [23]
Being produced mainly in the testis of mammals, researchers believe that the protein product of TEX55 plays a role in spermatogenesis. [13] It has been shown that individuals with Cryptorchidism and Sertoli-cell-only syndrome, which are both associated with sterility, do not produce this protein in their testis. [13] Microarray analysis of individuals with Teratozoospermia, a condition that is characterized by ~96% of sperm morphology being altered, indicates that TEX55 expression is reduced by ~20%. [21] [24] In clinical research, the TEX55 protein products have been detected in mice starting at 38 days old, then up regulated for at least 6 month. [13]