KRT20 (keratin 20)

Gene

• Entrez ID: 54474
• Gene name: Keratin 20
• Gene symbol: KRT20
• Synonyms: CD20, CK-20, CK20, K20, KRT21
• Chromosome: 17
• Chromosome location: 17q21.2
• Summary: The protein encoded by this gene is a member of the keratin family. The keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into cytokeratins and hair keratins. The type I cytokeratin

miRNA

miRTarBase ID	miRNA	Experiments	Reference
MIRT1101200	hsa-miR-135a	CLIP-seq
MIRT1101201	hsa-miR-135b	CLIP-seq
MIRT1101202	hsa-miR-140-5p	CLIP-seq
MIRT1101203	hsa-miR-150	CLIP-seq
MIRT1101204	hsa-miR-299-5p	CLIP-seq
MIRT1101205	hsa-miR-3160-5p	CLIP-seq
MIRT1101206	hsa-miR-4473	CLIP-seq
MIRT1101207	hsa-miR-4796-3p	CLIP-seq
MIRT1101208	hsa-miR-512-3p	CLIP-seq
MIRT1101209	hsa-miR-520f	CLIP-seq
MIRT1101210	hsa-miR-633	CLIP-seq
MIRT2258852	hsa-miR-129-5p	CLIP-seq
MIRT2258853	hsa-miR-1301	CLIP-seq
MIRT2258854	hsa-miR-450b-5p	CLIP-seq
MIRT2258855	hsa-miR-4660	CLIP-seq
MIRT2258856	hsa-miR-4742-5p	CLIP-seq
MIRT2258857	hsa-miR-5047	CLIP-seq
MIRT2258858	hsa-miR-507	CLIP-seq
MIRT2258859	hsa-miR-557	CLIP-seq

Transcription factors

Transcription factor	Regulation	Reference
CDX1	Unknown	19188603

Gene ontology (GO)

GO ID	Ontology	Definition	Evidence	Reference
GO:0005200	Function	Structural constituent of cytoskeleton	NAS	8359595
GO:0005515	Function	Protein binding	IPI	16189514, 16608857, 21516116, 25416956, 29892012, 31515488, 32296183, 32814053
GO:0005737	Component	Cytoplasm	IDA	10973561
GO:0005829	Component	Cytosol	IDA
GO:0005829	Component	Cytosol	TAS
GO:0005882	Component	Intermediate filament	NAS	8359595
GO:0006915	Process	Apoptotic process	IEA
GO:0009267	Process	Cellular response to starvation	IEA
GO:0031424	Process	Keratinization	TAS
GO:0045109	Process	Intermediate filament organization	IMP	12857878
GO:0050708	Process	Regulation of protein secretion	IEA
GO:0070268	Process	Cornification	TAS

Other IDs

• MIM: 608218
• HGNC: 20412
• e!Ensembl: ENSG00000171431

Protein

• UniProt ID: P35900
• Protein name: Keratin, type I cytoskeletal 20 (Cytokeratin-20) (CK-20) (Keratin-20) (K20) (Protein IT)
• Protein function: Plays a significant role in maintaining keratin filament organization in intestinal epithelia. When phosphorylated, plays a role in the secretion of mucin in the small intestine (By similarity). {ECO:0000250, ECO:0000269|PubMed:12857878, ECO:000
• Family and domains:

  Pfam

  Accession	ID	Position in sequence	Description	Type
  PF00038	Filament	69 → 380	Intermediate filament protein	Coiled-coil

• Sequence:

  MDFSRRSFHRSLSSSLQAPVVSTVGMQRLGTTPSVYGGAGGRGIRISNSRHTVNYGSDLT
  GGGDLFVGNEKMAMQNLNDRLASYLEKVRTLEQSNSKLEVQIKQWYETNAPRAGRDYSAY
  YRQIEELRSQIKDAQLQNARCVLQIDNAKLAAEDFRLKYETERGIRLTVEADLQGLNKVF
  DDLTLHKTDLEIQIEELNKDLALLKKEHQEEVDGLHKHLGNTVNVEVDAAPGLNLGVIMN
  EMRQKYEVMAQKNLQEAKEQFERQTAVLQQQVTVNTEELKGTEVQLTELRRTSQSLEIEL
  QSHLSMKESLEHTLEETKARYSSQLANLQSLLSSLEAQLMQIRSNMERQNNEYHILLDIK
  TRLEQEIATYRRLLEGEDVKTTEYQLSTLEERDIKKTRKIKTVVQEVVDGKVVSSEVKEV
  EENI

• Sequence length: 424

Pathways

KEGG:

Estrogen signaling pathway
Staphylococcus aureus infection

Reactome:

Keratinization
Formation of the cornified envelope

Associated diseases

Causal
Disease name	Disease term	dbSNP ID	References
Adenocarcinoma	Adenocarcinoma, Adenocarcinoma, Basal Cell, Adenocarcinoma, Oxyphilic, Adenocarcinoma, Tubular	rs121913530, rs886039394, rs121913474	15378696
Carcinoma	Carcinoma, Cribriform, Carcinoma, Granular Cell	rs121912654, rs555607708, rs786202962, rs1564055259	15378696
Colorectal cancer	Colorectal Carcinoma	rs137854568, rs137854573, rs137854575, rs387906234, rs1801155, rs121908380, rs121908702, rs267606674, rs4939827, rs794729661, rs121909055, rs281865417, rs267606884, rs28934575, rs587776769, rs104893815, rs587776800, rs63750198, rs63751109, rs863223312, rs63750710, rs63751615, rs63750206, rs63750781, rs63750899, rs63750691, rs63750217, rs121912965, rs63749939, rs63751194, rs63750693, rs63750540, rs63751221, rs193922370, rs80359596, rs397514632, rs483352909, rs200495564, rs397514684, rs397516436, rs398122386, rs79512956, rs74953290, rs587779001, rs63750677, rs63749837, rs267607816, rs63751715, rs267607819, rs267607815, rs267607822, rs63749906, rs587778883, rs63750472, rs63751012, rs63750715, rs63750580, rs267607706, rs267607709, rs267607710, rs587778894, rs63750749, rs63750483, rs63751015, rs63751153, rs63751094, rs63751118, rs63750316, rs63749981, rs587778906, rs267607821, rs587778908, rs63750020, rs587778909, rs63750713, rs267607825, rs63751592, rs281864936, rs587778913, rs587778914, rs63749795, rs63750855, rs63749916, rs63749923, rs63751472, rs63751689, rs267607832, rs267607837, rs267607836, rs587778923, rs63750028, rs587778928, rs587778929, rs587778930, rs63751277, rs587778933, rs267607842, rs267607843, rs63750192, rs587778934, rs63750193, rs587778937, rs587778938, rs267607845, rs63751244, rs63751393, rs63751460, rs267607849, rs267607853, rs267607856, rs267607850, rs63751657, rs267607854, rs267607852, rs587778942, rs63750309, rs63750587, rs63749863, rs63751486, rs63750016, rs63749868, rs63750375, rs63750035, rs63750604, rs63750386, rs63750150, rs63750486, rs63751428, rs267607866, rs63749986, rs63751594, rs63750152, rs63750850, rs267607867, rs267607868, rs63751632, rs267607871, rs63751892, rs587778956, rs63750469, rs587778958, rs63749792, rs267607875, rs63751255, rs281864938, rs63751202, rs63750726, rs63751310, rs63749900, rs587778964, rs267607879, rs267607878, rs587778966, rs267607883, rs267607887, rs63750061, rs63750663, rs587778968, rs587778971, rs63750809, rs63749867, rs63750864, rs587778972, rs63751275, rs267607718, rs267607722, rs63750769, rs267607717, rs587778973, rs267607716, rs267607720, rs63749995, rs63750859, rs587778975, rs63750114, rs587778976, rs63750603, rs267607889, rs267607723, rs63750561, rs63750499, rs63751642, rs63751022, rs587778981, rs63750971, rs267607898, rs267607906, rs267607903, rs587778989, rs587778992, rs267607894, rs267607901, rs267607892, rs63750437, rs587778997, rs587778998, rs63750005, rs63750641, rs63751421, rs11541859, rs63750266, rs111052004, rs267607726, rs267607727, rs63750453, rs267607734, rs267607735, rs63751665, rs267607736, rs267607732, rs63749816, rs63750539, rs267607739, rs587779006, rs587779008, rs267607745, rs267607742, rs63751595, rs267607743, rs587779010, rs587779012, rs63750057, rs63749818, rs63751124, rs587779014, rs587779015, rs63749820, rs63751302, rs267607750, rs267607751, rs267607749, rs63750891, rs63749959, rs63749804, rs267607765, rs267607760, rs587779021, rs267607759, rs63750515, rs587779023, rs63751021, rs63751480, rs267607772, rs267607773, rs587779024, rs63751653, rs587779027, rs267607767, rs587779029, rs63750706, rs63750385, rs267607774, rs267607778, rs267607780, rs587779034, rs63751711, rs267607784, rs587779035, rs63750823, rs63750822, rs267607787, rs63750303, rs63749839, rs63749827, rs267607789, rs267607790, rs267607791, rs267607786, rs267607771, rs267607795, rs267607794, rs267607788, rs267607799, rs267607801, rs587779045, rs63750034, rs587779047, rs63750216, rs63751707, rs63751598, rs267607803, rs267607777, rs63750144, rs267607805, rs63750547, rs63750489, rs63750993, rs587779054, rs63751259, rs63749926, rs63750796, rs587779058, rs63750745, rs63750582, rs180177084, rs587779866, rs200389141, rs587779950, rs587780104, rs587780183, rs587778536, rs587780683, rs587781554, rs267607712, rs587777627, rs587783057, rs730881734, rs41542214, rs730881273, rs786203456, rs786201990, rs786202767, rs748005072, rs786204317, rs786204318, rs797045117, rs63750549, rs863225383, rs863225384, rs863225373, rs863225376, rs863225377, rs863225378, rs863225379, rs863225380, rs863225381, rs63750059, rs267607823, rs864622457, rs869312767, rs869312753, rs876661059, rs876658915, rs876658923, rs876660860, rs876660822, rs876660458, rs876660214, rs876658657, rs876658247, rs876659226, rs876658821, rs876660589, rs876659068, rs876659681, rs876659608, rs878853794, rs878853778, rs878853780, rs878853785, rs886039423, rs886039424, rs1057517543, rs1057517541, rs756843954, rs1057517617, rs1057517558, rs1057519256, rs1060500689, rs764085979, rs1060500707, rs1060500699, rs1060500706, rs1060500703, rs1064795341, rs1064793607, rs1064794348, rs1064795441, rs1064794373, rs1064793172, rs1064794122, rs1064795515, rs1064794331, rs63750978, rs1114167435, rs1553641362, rs63751448, rs1553648029, rs1553648058, rs587778903, rs1553653237, rs1553664353, rs267607744, rs1553647995, rs1553648047, rs1553653084, rs1553663750, rs1553664436, rs1553488015, rs1553637293, rs63750310, rs63750443, rs63751596, rs1553646681, rs550890395, rs1064796057, rs1553642079, rs1553648023, rs587782087, rs746536721, rs1553653037, rs1248251121, rs1553646602, rs1434898623, rs1553665683, rs1553648068, rs1553645331, rs1553644123, rs1553658246, rs1553651299, rs1553648149, rs1553663159, rs1302248679, rs1553664119, rs1553658009, rs1553665977, rs1416171624, rs1553663834, rs1553664617, rs1553664702, rs1553647969, rs1553648040, rs1437454428, rs1553641273, rs63751101, rs1553646764, rs1553648225, rs1554082118, rs1553648201, rs1553149467, rs1553638868, rs1553665866, rs376736188, rs1553642707, rs1553645226, rs1553652883, rs63751435, rs1553653115, rs1553653195, rs63750300, rs1553662622, rs1553658104, rs1553648220, rs1559544064, rs63750584, rs267608083, rs1559551570, rs1559575107, rs1559553501, rs1565986506, rs1559524405, rs1559553492, rs1559554339, rs1559588540, rs1559558071, rs761329565, rs1559521039, rs1559574795, rs1567221417, rs1559578422, rs1481129490, rs1570714352, rs779783209, rs1575376830, rs1575469070, rs1575537843, rs1575620443, rs1575621506, rs587779022, rs1575414904, rs1575449093, rs1575469505, rs1575536254, rs1575537933, rs1575632112, rs1575639851, rs1575441094, rs1575449402, rs267607831, rs2081922847, rs2083403132, rs2085415927, rs2085469647, rs2043913790, rs147542208
Gastric cancer	Hereditary Diffuse Gastric Cancer	rs137854571, rs63751108, rs34612342, rs121908383, rs121909144, rs121909775, rs121909219, rs121909223, rs63750871, rs80359530, rs121964873, rs121913530, rs606231203, rs121918505, rs587776802, rs28933369, rs121912469, rs80358011, rs397507262, rs80359439, rs397507333, rs80359543, rs80358831, rs80359596, rs80358920, rs80358972, rs80359659, rs397507404, rs397514661, rs80359516, rs200495564, rs80358419, rs80359274, rs80359283, rs80358427, rs80358428, rs80358435, rs81002805, rs397507660, rs397507663, rs80359391, rs80359443, rs81002797, rs80359466, rs397507752, rs80359484, rs80359603, rs397507954, rs80359058, rs80359071, rs397507981, rs80359121, rs80357086, rs80357064, rs397508936, rs80357695, rs80357661, rs397509035, rs80357544, rs80357577, rs80357881, rs80357296, rs80356923, rs80356866, rs80357504, rs80357390, rs80357239, rs80358099, rs397509284, rs80357258, rs199474738, rs199474747, rs587779204, rs63750439, rs267608076, rs587779246, rs63749999, rs267608078, rs63751327, rs267607719, rs267607734, rs63750706, rs63751711, rs587779047, rs587779075, rs267607949, rs63750633, rs63750803, rs63751618, rs267608154, rs200640585, rs80358018, rs80357857, rs80357882, rs180177103, rs587779815, rs587779865, rs587779872, rs587780059, rs121912666, rs587780088, rs587780104, rs200432447, rs180177100, rs587780226, rs587780784, rs587776416, rs587781276, rs587781629, rs587781694, rs587781727, rs587781730, rs587781807, rs587781894, rs587781948, rs121913344, rs587782292, rs587782350, rs587782558, rs587782719, rs587782885, rs587783057, rs730881833, rs730881411, rs730881336, rs139770721, rs730881869, rs730881633, rs730882007, rs786203115, rs765123255, rs1553333738, rs762083530, rs786202800, rs17174393, rs55996097, rs750621215, rs786203451, rs747604569, rs764389018, rs786204433, rs786204862, rs772821016, rs779582317, rs863225406, rs193922343, rs759965045, rs63749919, rs760228510, rs746481984, rs762307622, rs876659736, rs876660933, rs747727055, rs1450394308, rs876658348, rs876658431, rs876659326, rs876660444, rs730881369, rs878853865, rs753862052, rs587780024, rs138941496, rs886040739, rs886040744, rs886040347, rs878854957, rs886040123, rs398122662, rs886040942, rs1057517104, rs1057516320, rs1057516683, rs879254046, rs1057517253, rs587781927, rs985033810, rs1057519989, rs775464903, rs374230313, rs758304323, rs1060501599, rs758081262, rs1060500126, rs1060502734, rs587776408, rs1060501695, rs1114167816, rs1114167596, rs1114167667, rs1555460315, rs1135402788, rs1554086196, rs730881919, rs773356478, rs769237459, rs1553653158, rs587782087, rs1555107263, rs1555119940, rs1403784434, rs1342519012, rs751710099, rs1553616361, rs1553619721, rs1270783041, rs775036118, rs1555288557, rs1555460548, rs1555461154, rs1298667185, rs1553622218, rs63751101, rs1349928568, rs771936821, rs1021662947, rs1555921011, rs81002831, rs1555124506, rs1555574803, rs1060502716, rs1555605362, rs747057367, rs1565385010, rs1567554500, rs1567516230, rs1558644995, rs1555591308, rs778306619, rs1566231194, rs1603328466, rs1570406302, rs1586108714, rs768362387, rs1597713777, rs1060502926, rs1597867185, rs1591517571, rs1591663236, rs1593903006, rs1555284779, rs1597096243, rs45459799, rs1597360340, rs587781905, rs864622481, rs1601753141, rs1966858562, rs1966967065, rs1967016153, rs1967113484, rs2080473458, rs1591387978, rs1224428422, rs1597747184, rs2082309297, rs2051929740, rs147542208	15378696

Unknown
Disease name	Disease term	dbSNP ID	References
Cecal neoplasm	Cecal Neoplasms		14688030
Cecum cancer	Malignant neoplasm of cecum		14688030
Stomach neoplasms	Malignant neoplasm of stomach, Stomach Neoplasms		15378696