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Sequence of this protein is as follows: MWSGRKLGSS GGWFLRVLGP GGCNTKAARP LISSAVYVKN QLSGTLQIKP GVFNEYRTIW FKSYRTIFSC LNRIKSFRYP WARLYSTSQT TVDSGEVKTF LALAHKWWDE QGVYAPLHSM NDLRVPFIRD NLLKTIPNHQ PGKPLLGMKI LDVGCGGGLL TEPLGRLGAS VIGIDPVDEN IKTAQCHKSF DPVLDKRIEY RVCSLEEIVE ETAETFDAVV ASEVVEHVID LETFLQCCCQ VLKPGGSLFI TTINKTQLSY ALGIVFSEQI AGIVPKGTHT WEKFVSPETL ESILESNGLS VQTVVGMLYN PFSGYWHWSE NTSLNYAAHA VKSRVQEHPA SAEFVLKGET EELQANACTN PAVHEKLKK
Ubiquinone, also known as coenzyme Q, or Q, is a critical component of the electron transport pathways of both eukaryotes and prokaryotes. This lipid consists of a hydrophobic isoprenoid tail and a quinone head group. The tail varies in length depending on the organism, but its purpose is to anchor coenzyme Q to the membrane. The quinone head group is responsible for the activity of coenzyme Q in the respiratory chain. The S. cerevisiae COQ3 gene encodes an O-methyltransferase required for 2 steps in the biosynthetic pathway of coenzyme Q. This enzyme methylates an early coenzyme Q intermediate, 3,4-dihydroxy-5-polyprenylbenzoic acid, as well as the final intermediate in the pathway, converting demethyl-ubiquinone to coenzyme Q. The COQ3 gene product is also capable of methylating the distinct prokaryotic early intermediate 2-hydroxy-6-polyprenyl phenol.
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Protein Aliases: 2-polyprenyl-6-hydroxyphenol methylase; 2-polyprenyl-6-hydroxyphenyl methylase; 3,4-dihydroxy-5-hexaprenylbenzoate methyltransferase; 3-demethylubiquinol 3-O-methyltransferase; 3-demethylubiquinone-10 3-methyltransferase; coenzyme Q3 homolog, methyltransferase; coenzyme Q3 methyltransferase; DHHB methyltransferase; DHHB-MT; DHHB-MTase; dihydroxyhexaprenylbenzoate methyltransferase; hexaprenyldihydroxybenzoate methyltransferase, mitochondrial; methyltransferase COQ3; Polyprenyldihydroxybenzoate methyltransferase; Ubiquinone biosynthesis O-methyltransferase, mitochondrial
Gene Aliases: bA9819.1; COQ3; DHHBMT; DHHBMTASE; UG0215E05
UniProt ID: (Human) Q9NZJ6
Entrez Gene ID: (Human) 51805
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