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TK2 (thymidine kinase 2)

Gene
Entrez ID Entrez Gene ID - the GENE ID in NCBI Gene database.
7084
Gene nameGene Name - the full gene name approved by the HGNC.
Thymidine kinase 2
Gene symbolGene Symbol - the official gene symbol approved by the HGNC, which is a short abbreviated form of the gene name.
TK2
SynonymsGene synonyms aliases
MTDPS2, MTTK, PEOB3, SCA31, TK2-EXT
ChromosomeChromosome number
16
Chromosome locationChromosomal Location - indicates the cytogenetic location of the gene or region on the chromosome.
16q21
SummarySummary of gene provided in NCBI Entrez Gene.
This gene encodes a deoxyribonucleoside kinase that specifically phosphorylates thymidine, deoxycytidine, and deoxyuridine. The encoded enzyme localizes to the mitochondria and is required for mitochondrial DNA synthesis. Mutations in this gene are associ
SNPsSNP information provided by dbSNP.
SNP ID Visualize variation Clinical significance Consequence
rs137854429 G>T Pathogenic Non coding transcript variant, coding sequence variant, missense variant
rs137854430 A>T Pathogenic Non coding transcript variant, coding sequence variant, missense variant
rs137854431 G>A Pathogenic Non coding transcript variant, coding sequence variant, missense variant
rs137854432 G>C Pathogenic Intron variant, coding sequence variant, missense variant, non coding transcript variant, 5 prime UTR variant
rs137886900 G>A,C,T Uncertain-significance, pathogenic Synonymous variant, intron variant, coding sequence variant, missense variant, non coding transcript variant
miRNAmiRNA information provided by mirtarbase database.
miRTarBase ID miRNA Experiments Reference
MIRT017549 hsa-miR-335-5p Microarray 18185580
MIRT1425935 hsa-miR-129-3p CLIP-seq
MIRT1425936 hsa-miR-1908 CLIP-seq
MIRT1425937 hsa-miR-19a CLIP-seq
MIRT1425938 hsa-miR-19b CLIP-seq
Gene ontology (GO)Gene ontology information of associated ontologies with gene provided by GO database.
GO ID Ontology Definition Evidence Reference
GO:0004797 Function Thymidine kinase activity IEA
GO:0005524 Function ATP binding IEA
GO:0005737 Component Cytoplasm IBA 21873635
GO:0005759 Component Mitochondrial matrix TAS
GO:0006139 Process Nucleobase-containing compound metabolic process TAS 9079672
Other IDsOther ids provides unique ids of gene in databases such as OMIM, HGNC, ENSEMBLE.
MIM
HGNC
e!Ensembl
Protein
UniProt ID O00142
Protein name Thymidine kinase 2, mitochondrial (EC 2.7.1.21) (2'-deoxyuridine kinase TK2) (EC 2.7.1.74) (Deoxycytidine kinase TK2) (EC 2.7.1.-) (Mt-TK)
Protein function Phosphorylates thymidine, deoxycytidine, and deoxyuridine in the mitochondrial matrix (PubMed:11687801, PubMed:9989599). In non-replicating cells, where cytosolic dNTP synthesis is down-regulated, mtDNA synthesis depends solely on TK2 and DGUOK
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF01712 dNK
53 265
Deoxynucleoside kinase
Domain
Sequence
Sequence length 265
Interactions View interactions
PathwaysPathway information has different metabolic/signaling pathways associated with genes. Each record is hyperlinked to a complete information page which also includes links to the KEGG/Reactome pathway database.
 
KEGG
 
Reactome
  Pyrimidine metabolism
Drug metabolism - other enzymes
Metabolic pathways
Nucleotide metabolism
  Pyrimidine salvage
Associated diseases
Causal
Disease name Disease term dbSNP ID References
Cardiomyopathy Cardiomyopathies rs267607003, rs267607002, rs267607004, rs63750743, rs121908333, rs121908334, rs104894655, rs121434420, rs121434421, rs193922674, rs111517471, rs121908987, rs193922384, rs121909374, rs121909377, rs2856655, rs587776700, rs397514444, rs387906397, rs137854607, rs28935197, rs199473684, rs121964858, rs74315379, rs74315380, rs104894724, rs104894727, rs104894728, rs104894729, rs104894730, rs121917760, rs267607125, rs104894503, rs267607155, rs267607156, rs121918597, rs121918600, rs28933979, rs121918070, rs76992529, rs111033559, rs111033560, rs104894368, rs104894369, rs104894370, rs121913624, rs3218713, rs121913625, rs121913626, rs121913627, rs121913628, rs121913629, rs121913630, rs121913631, rs121913632, rs3218714, rs121913637, rs121913638, rs121913641, rs121913642, rs121913651, rs267606911, rs267606908, rs730880850, rs61046466, rs57520892, rs28933091, rs28933092, rs28933093, rs121913008, rs121913003, rs121912996, rs121912997, rs193922680, rs387906875, rs199474703, rs199476315, rs199476316, rs199476317, rs199476321, rs199476311, rs193922683, rs193922668, rs386134243, rs267607578, rs36211723, rs193922390, rs193922672, rs193922697, rs387907267, rs45546039, rs387907218, rs397515870, rs397515893, rs397515894, rs397515903, rs397515905, rs375882485, rs397515907, rs397515912, rs397515916, rs397515925, rs397515926, rs397515934, rs397515937, rs397515943, rs397515944, rs397515947, rs397515954, rs112738974, rs111729952, rs397515960, rs397515963, rs397515973, rs397515974, rs397515977, rs376395543, rs397515979, rs397515982, rs397515990, rs397515991, rs397515992, rs397516005, rs113358486, rs397516006, rs397516007, rs397516008, rs373746463, rs397516019, rs397516023, rs397516029, rs397516031, rs397516037, rs397516040, rs397516042, rs397516044, rs397516049, rs397516057, rs397516059, rs397516068, rs397516070, rs397516072, rs397516073, rs397516074, rs397516076, rs397516077, rs397516080, rs397516082, rs397516083, rs397516088, rs397516089, rs397516103, rs397516123, rs397516127, rs371898076, rs397516132, rs397516142, rs3218716, rs397516154, rs397516161, rs397516165, rs397516170, rs397516178, rs397516179, rs397516187, rs397516201, rs397516202, rs145213771, rs397516207, rs397516209, rs397516212, rs397516248, rs397516252, rs397516254, rs397516258, rs397516260, rs45516091, rs397516264, rs397516269, rs397516347, rs397516349, rs397516352, rs397516353, rs397516355, rs397516356, rs397516357, rs397516364, rs397516370, rs397516371, rs397516373, rs397516386, rs397516406, rs397516454, rs397516456, rs397516461, rs397516463, rs397516464, rs45525839, rs397516471, rs45578238, rs111377893, rs397516607, rs62636495, rs397516784, rs397516881, rs397516913, rs397516915, rs397516927, rs397516940, rs397516943, rs397516945, rs397516955, rs397516956, rs397516973, rs397516986, rs397516989, rs372827156, rs397516992, rs397516993, rs397516994, rs397516997, rs397517003, rs397517008, rs397517010, rs397517012, rs397517021, rs397517065, rs397517547, rs397517576, rs397517580, rs397517584, rs397517586, rs397517587, rs397517589, rs397517601, rs397517620, rs397517624, rs397517626, rs397517628, rs72646831, rs397517633, rs397517643, rs72646846, rs397517664, rs397517679, rs397517689, rs397517695, rs397517696, rs397517698, rs397517721, rs397517735, rs397517741, rs397517749, rs397517750, rs397517758, rs397517776, rs397517787, rs397517830, rs397517887, rs397517888, rs397517889, rs58013325, rs397517895, rs56984562, rs267607646, rs58917027, rs267607594, rs397517904, rs61195471, rs60682848, rs267607573, rs397517908, rs58978449, rs397517909, rs267607593, rs397517911, rs56816490, rs397517915, rs267607554, rs397514742, rs886041395, rs397515482, rs267607490, rs58999456, rs267607555, rs61672878, rs267607618, rs267607577, rs57730570, rs267607582, rs267607581, rs61444459, rs59270054, rs61661343, rs267607570, rs59026483, rs267607571, rs59332535, rs199473161, rs398123262, rs869320740, rs606231324, rs587782927, rs201754030, rs58389804, rs587782958, rs587782961, rs587782962, rs587782986, rs138049878, rs376897125, rs368765949, rs111569862, rs727504247, rs727503537, rs727504535, rs727504550, rs727504679, rs727503546, rs730880365, rs727504646, rs727505014, rs727505288, rs727503557, rs727503559, rs730880343, rs727503615, rs727504825, rs727503565, rs727504655, rs727505352, rs727504466, rs727504531, rs727503567, rs371678190, rs727503586, rs727505319, rs727503547, rs727505076, rs727505224, rs727503552, rs727504856, rs727504782, rs727504660, rs557312035, rs727505284, rs727504851, rs727504589, rs727504499, rs727504843, rs727504452, rs727503697, rs150974575, rs727504498, rs727503598, rs727503602, rs727503607, rs727504801, rs727504738, rs727505115, rs727505283, rs727505109, rs727504271, rs727504321, rs727504289, rs727503172, rs727503180, rs727503182, rs727504265, rs727504334, rs727503192, rs397515932, rs727504287, rs200411226, rs727503204, rs727504269, rs367947846, rs730880335, rs727502897, rs727503166, rs111683277, rs727503195, rs727503203, rs727503212, rs727503738, rs727504381, rs727504356, rs727503261, rs727504238, rs148808089, rs45544633, rs727503246, rs397516171, rs727503253, rs202141173, rs727504310, rs727503258, rs727503260, rs727504320, rs727504240, rs727503263, rs727503269, rs727503278, rs727504432, rs727504243, rs727504285, rs727503499, rs727503504, rs727504242, rs727504379, rs727504389, rs727504275, rs727504557, rs727502994, rs727504184, rs730880336, rs730880362, rs730880199, rs730880246, rs72648265, rs730880243, rs730880242, rs730880241, rs574660186, rs730880245, rs730880082, rs730880092, rs730880093, rs730880055, rs397515939, rs730881119, rs397516020, rs730880675, rs730880719, rs730880672, rs730880671, rs730880718, rs730880666, rs730880717, rs730880655, rs730880715, rs730880654, rs730880714, rs730880651, rs730880648, rs730880713, rs730880546, rs730880695, rs730880533, rs730880531, rs730880639, rs730880689, rs730880686, rs730880629, rs368121566, rs375607980, rs730880704, rs730880698, rs730880750, rs730880748, rs730880875, rs730880845, rs1565623093, rs786204339, rs786204336, rs786204392, rs786204388, rs786204950, rs786204951, rs794727381, rs760576804, rs112188483, rs794728597, rs794728606, rs794728593, rs59564495, rs190140598, rs794728826, rs794728803, rs794728106, rs149701627, rs1554108152, rs770873593, rs794728124, rs141026028, rs794728094, rs794729098, rs794729116, rs764817683, rs751288871, rs201405287, rs794729137, rs794729133, rs766209297, rs767987619, rs769220833, rs794729120, rs112240298, rs748382770, rs794729365, rs794729301, rs757451467, rs794729359, rs794729354, rs794729353, rs794729285, rs794729284, rs794729338, rs794729332, rs368452607, rs794729278, rs794729325, rs794729324, rs754866489, rs794729265, rs751502842, rs794729320, rs794729380, rs748313513, rs797046064, rs863225113, rs863225106, rs761507504, rs864622224, rs1057515421, rs751039219, rs869025555, rs869025546, rs869025554, rs869025559, rs869025545, rs869025558, rs869025557, rs200797552, rs869025550, rs869025549, rs869025544, rs869025552, rs869025548, rs869025556, rs770029258, rs869025523, rs869025398, rs869025399, rs869025395, rs869025365, rs869025469, rs869025483, rs749838192, rs869312028, rs869312037, rs869312038, rs869312039, rs869312040, rs869312041, rs869312042, rs869312044, rs869312046, rs373040154, rs869312047, rs869312048, rs869312049, rs869312050, rs869312051, rs869312052, rs869312054, rs869312055, rs777602537, rs869312056, rs869312057, rs869312058, rs869312059, rs869312060, rs770038577, rs869312061, rs869312062, rs869312063, rs869312064, rs869312065, rs869312066, rs869312067, rs869312068, rs869312069, rs771562210, rs869312070, rs869312071, rs759231562, rs869312072, rs869312073, rs764243269, rs768345594, rs869312074, rs869312075, rs869312076, rs869312077, rs869312078, rs869312079, rs869312080, rs772121356, rs869312081, rs869312082, rs72648250, rs869312083, rs869312084, rs869312085, rs869312086, rs869312087, rs869312100, rs779129892, rs756367933, rs869312102, rs869312103, rs869312104, rs869312105, rs869312106, rs770767998, rs869312107, rs775186117, rs869312108, rs869312109, rs869312110, rs869312111, rs755261062, rs869312112, rs763824247, rs869312113, rs869312114, rs869312115, rs869312116, rs774604740, rs869312117, rs779996703, rs869312118, rs869312119, rs869312120, rs869312121, rs869312122, rs869312045, rs753948675, rs878854371, rs794728589, rs876657650, rs727503512, rs876658027, rs876657672, rs876657671, rs868494032, rs876657670, rs780512337, rs876657669, rs876657668, rs876657666, rs876657665, rs876657664, rs876657663, rs148894066, rs876657634, rs869248137, rs876657705, rs876657704, rs727503213, rs869025496, rs876657662, rs876657884, rs36211715, rs878855234, rs879255521, rs879255639, rs886038928, rs751746401, rs886039030, rs869038795, rs886039343, rs2069544, rs1114167341, rs1114167340, rs886041322, rs886042331, rs886043718, rs747662439, rs886043924, rs773840992, rs886044536, rs1057517903, rs754354190, rs779650200, rs902082118, rs1057518920, rs1057519457, rs1057523045, rs370072439, rs1064792916, rs1060500495, rs1060500575, rs926741242, rs774763657, rs746877365, rs1060500610, rs1060501484, rs1060501479, rs1064792928, rs1060501443, rs1060499604, rs1064793814, rs1064796347, rs977277400, rs1064793429, rs745811346, rs1064794350, rs1555142963, rs1064793983, rs769665204, rs751261054, rs769139957, rs1131691873, rs1131691655, rs1131691673, rs1464253797, rs1408345511, rs1553603152, rs1554398705, rs1322596650, rs1553539995, rs1553611989, rs749961489, rs1444727212, rs1243301263, rs971618751, rs1553662326, rs1389777522, rs764985774, rs1554108287, rs1554105911, rs1249913357, rs1554108012, rs111806457, rs1402879259, rs748416758, rs794727046, rs1425855043, rs869178171, rs1432810664, rs749465164, rs878898365, rs1419374180, rs770878165, rs1553503113, rs1553691320, rs1553577362, rs1553603456, rs1417036453, rs1553741321, rs1553479603, rs1553607425, rs974671846, rs1420159591, rs745688425, rs1554875409, rs1555144459, rs1555338080, rs1555338574, rs1555148035, rs200889953, rs1401116572, rs1285329277, rs974510652, rs1263987728, rs1555122928, rs992189342, rs1555142971, rs1553261855, rs1553265647, rs1553488049, rs1553644307, rs1553663867, rs1553940122, rs28763965, rs758891557, rs762110595, rs1555436118, rs1555435531, rs565910322, rs376766195, rs1562168768, rs763443331, rs1562169661, rs1370579526, rs1561703922, rs1564773559, rs1559003939, rs1559598775, rs1559415567, rs1559877046, rs776970935, rs553526525, rs1561698362, rs1561694696, rs1561702640, rs730880751, rs1060505018, rs766330686, rs1565631430, rs1565050320, rs876657767, rs1565053085, rs1565053147, rs1557778277, rs1557776329, rs886039136, rs771262904, rs727504314, rs1563000044, rs541612157, rs766265889, rs1558988204, rs1559051231, rs1559262463, rs1559448864, rs1559469421, rs1559556267, rs1559746821, rs1559873786, rs1561323791, rs1561445221, rs1561686893, rs1561698714, rs1561702549, rs1565623439, rs1565623713, rs1565626367, rs1565627110, rs1565627145, rs397515889, rs1565628520, rs774316050, rs1592798444, rs1565590309, rs1566967399, rs1569552936, rs1559712733, rs1561690319, rs1561701721, rs869125101, rs1595843553, rs1576018303, rs746115846, rs777315336, rs1431206462, rs1572358674, rs1477669354, rs1575584918, rs1575614351, rs72648222, rs1575799625, rs1576014673, rs1576147786, rs747469275, rs1581805658, rs1227662860, rs1585169831, rs1592729525, rs762753884, rs1596155145, rs1572358821, rs991187915, rs1575649368, rs1060500562, rs1450218521, rs775256998, rs1572332762, rs1571627006, rs1575253896, rs1575616801, rs1575775337, rs1575948935, rs1574083547, rs1574087037, rs1589632398, rs1585171818, rs1603365762, rs768079285, rs1575663327, rs1575796530, rs1574659116, rs267607001, rs1567093598, rs1572359848, rs1060500505, rs1575512482, rs1575872984, rs1161735211, rs1576141328, rs906494713, rs1576685753, rs1266489077, rs1581813564, rs778808038, rs397516363, rs1596386673, rs1575610911, rs727503266, rs1603377936, rs777702465, rs1708504899, rs2054381012, rs1575285509, rs1695435412, rs1699247877, rs879139686, rs2060187635, rs761380979, rs1464886350, rs1956192035, rs752522753, rs1205836993, rs2095894178
Developmental delay Gross motor development delay rs28941770, rs199469464, rs281865469, rs143747297, rs398123009, rs587777428, rs786205133, rs606231459, rs797044854, rs797045027, rs864309504, rs878853160, rs886039902, rs886042046, rs886041291, rs886041382, rs1057518991, rs1057518699, rs753254213, rs748294403, rs762552974, rs1135401795, rs1553121073, rs1553122926, rs1364690005, rs1554086554, rs1554210415, rs1554168326, rs1554776342, rs1553873247, rs1567860112, rs779009256, rs1557447255, rs1564568350, rs780011005, rs1597464953, rs1200336864, rs1569513017, rs1587459606, rs1570332505, rs748888652, rs1575155995, rs2087029320, rs1589669105, rs1601769604, rs1184981709, rs749201074
Developmental regression Developmental regression rs1224421127
External ophthalmoplegia External Ophthalmoplegia rs1569484022
Unknown
Disease name Disease term dbSNP ID References
Amyotrophy Generalized amyotrophy
Bulbar palsy Bulbar palsy
Cerebellar atrophy Cerebellar atrophy
Cerebral atrophy Cerebral atrophy

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