MATCAP2

The MATCAP2 gene is located at 7p14.2.^[8] The genomic DNA is 65,976 base pairs long,^[6] while the longest mRNA that it produces is 4463 bases long.

It can be transcribed into 15 transcript variants, which in turn can produce 13 different isoforms of the protein.^[9]

MATCAP2 is surrounded by the following genes on chromosome 7:^[6]

• EEPD1
• MARK2P7
• ANLN
• LOC111365168
• AOAH

The gene encoded for the MATCAP2 protein is 65,975 nucleotides long, from nucleotides 36324150 to 36390125, with seven exons.

MATCAP2 is a lysine and arginine semi-enriched protein.^[12] MATCAP2 is semi-enriched in positively charged lysine and arginine groups, and positively and negatively charged lysine, arginine, glutamic acid and aspartic acid groups.^[12] However, MATCAP2 is semi-depleted in non-polar alanine, glycine and proline groups.^[12]

The charge distribution analysis shows that there are no negative or mixed charge clusters.^[12] However, there is one positive charge cluster from amino acids 12 to 36.^[12]

LOC23366 contains a protein domain of unknown function called DUF1704.^[13] It also contains a region of low complexity from position 120 to position 150 in the protein,^[14] and an arginine-rich area from position 12 to position 51.^[15]

Using ElDorado by Genomatrix, a promoter region sequence was found.^[16] The most likely promoter for MATCAP2 starts at 36389926 and goes to 36391149, with a length of 1224.^[16]

MATCAP2 is predicted to undergo phosphorylation at several serines, threonines, and tyrosines throughout its structure.^[17] Phosphorylation at these sites is a form of gene regulation. Phosphorylation results in a conformational change in the structure of many enzymes and receptors. This causes them to become activated or deactivated.

Using a database called Mfold, a stem-loop formation for the 5' UTR region shows that there is a lack of conservation, meaning there is some precedence that these stems and loops are not used for translation regulation.^[18] The ΔG value was -12.90 kcal/mol with three loops.^[18] Using the same database, a stem-loop formation for the 3' UTR region shows that there is conservation, meaning there is some precedence that they are used for translation regulation.^[18] The ΔG value was -636.80 kcal/mol.^[18]

MATCAP2 has a tertiary structure with alpha helices and beta sheets.^[19]

There are three proteins likely to be interacting proteins with MATCAP2. These proteins are ELAVL1,^[20] vata,^[21] and glym.^[21] These interactions have experimental evidence from the sources provided.

Using an EST profile from NCBI, MATCAP2 has strong expression in cervical tumors and bladder carcinoma.^[22]