KAZN

gene
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Also known as KIAA1026KAZRINFLJ43806

Summary

KAZN (kazrin, periplakin interacting protein, HGNC:29173) is a protein-coding gene on chromosome 1p36.21, encoding Kazrin (Q674X7). Component of the cornified envelope of keratinocytes.

This gene encodes a protein that plays a role in desmosome assembly, cell adhesion, cytoskeletal organization, and epidermal differentiation. This protein co-localizes with desmoplakin and the cytolinker protein periplakin. In general, this protein localizes to the nucleus, desmosomes, cell membrane, and cortical actin-based structures. Some isoforms of this protein also associate with microtubules. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Additional splice variants have been described but their biological validity has not been verified.

Source: NCBI Gene 23254 — RefSeq curated summary.

At a glance

  • GWAS associations: 20
  • Clinical variants (ClinVar): 137 total
  • MANE Select transcript: NM_201628

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:29173
Approved symbolKAZN
Namekazrin, periplakin interacting protein
Location1p36.21
Locus typegene with protein product
StatusApproved
AliasesKIAA1026, KAZRIN, FLJ43806
Ensembl geneENSG00000189337
Ensembl biotypeprotein_coding
OMIM618301
Entrez23254

Gene structure

Transcript identifiers

Ensembl transcripts: 9 — 8 protein_coding, 1 retained_intron

ENST00000361144, ENST00000376028, ENST00000376030, ENST00000400797, ENST00000400798, ENST00000491547, ENST00000503743, ENST00000636203, ENST00000636564

RefSeq mRNA: 8 — MANE Select: NM_201628 NM_001017999, NM_001018000, NM_001018001, NM_001370229, NM_001370230, NM_001370231, NM_015209, NM_201628

CCDS: CCDS152, CCDS30604, CCDS41267, CCDS41268

Canonical transcript exons

ENST00000376030 — 15 exons

ExonStartEnd
ENSE000015472741511447115118043
ENSE000016515361506017215060302
ENSE000016664381509418015094385
ENSE000016792501506563015065753
ENSE000017206771509481515094933
ENSE000017277291506357215063622
ENSE000017666281510154315101774
ENSE000030285661511242715112541
ENSE000031530691510335915103460
ENSE000031821571510402315104189
ENSE000034623891496068414960875
ENSE000035362101503474915034885
ENSE000035867271459868514599223
ENSE000036275021505609115056280
ENSE000036935011504398915044159

Expression profiles

Bgee: expression breadth ubiquitous, 277 present calls, max score 98.91.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 13.3103 / max 244.9347, expressed in 1440 samples.

FANTOM5 promoters (9 alternative TSS)

Promoter IDTPM avgSamples expressed
8077.77081394
7882.8036606
7901.4655448
7770.6690189
7890.3248195
7780.111261
8100.105947
7790.043624
8080.01596

Top tissues by expression

292 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
cerebellar vermisUBERON:000472098.91gold quality
inferior vagus X ganglionUBERON:000536398.18gold quality
esophagus squamous epitheliumUBERON:000692098.15gold quality
substantia nigra pars reticulataUBERON:000196698.10gold quality
cervix squamous epitheliumUBERON:000692298.06gold quality
paraflocculusUBERON:000535197.85gold quality
tongue squamous epitheliumUBERON:000691997.72gold quality
squamous epitheliumUBERON:000691497.50gold quality
renal medullaUBERON:000036297.45gold quality
lateral globus pallidusUBERON:000247697.45gold quality
substantia nigra pars compactaUBERON:000196597.29gold quality
epithelium of esophagusUBERON:000197697.26gold quality
subthalamic nucleusUBERON:000190697.24gold quality
lateral nuclear group of thalamusUBERON:000273696.96gold quality
pharyngeal mucosaUBERON:000035596.79gold quality
ventral tegmental areaUBERON:000269196.78gold quality
parietal lobeUBERON:000187296.59gold quality
medulla oblongataUBERON:000189696.58gold quality
postcentral gyrusUBERON:000258196.45gold quality
dorsal plus ventral thalamusUBERON:000189796.32gold quality
middle frontal gyrusUBERON:000270296.32gold quality
cortical plateUBERON:000534396.16gold quality
nippleUBERON:000203096.08gold quality
Brodmann (1909) area 46UBERON:000648396.05gold quality
spleenUBERON:000210695.98gold quality
cerebellumUBERON:000203795.94gold quality
caput epididymisUBERON:000435895.90gold quality
inferior olivary complexUBERON:000212795.89gold quality
mammalian vulvaUBERON:000099795.88gold quality
superior vestibular nucleusUBERON:000722795.82gold quality

Single-cell (SCXA)

Detected in 9 experiment(s), a significant marker in 8.

ExperimentMarker?Max mean expression
E-HCAD-35yes8366.34
E-HCAD-25yes4036.26
E-GEOD-180759yes3405.74
E-HCAD-30yes3100.02
E-CURD-119yes2341.87
E-MTAB-10018yes237.88
E-HCAD-5yes47.69
E-ANND-3yes8.32
E-GEOD-131882no2638.02

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

78 targeting KAZN, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-12118100.0065.881270
HSA-MIR-3646100.0073.565283
HSA-MIR-196A-1-3P99.9972.152772
HSA-MIR-186-5P99.9970.833707
HSA-MIR-3173-3P99.9866.491217
HSA-MIR-6891-5P99.9866.531372
HSA-MIR-520D-5P99.9873.344883
HSA-MIR-524-5P99.9873.434882
HSA-MIR-19A-3P99.9875.332762
HSA-MIR-19B-3P99.9875.442754
HSA-MIR-6825-5P99.9669.813431
HSA-MIR-141-3P99.9472.792421
HSA-MIR-200A-3P99.9472.682420
HSA-MIR-651-3P99.9473.485177
HSA-MIR-971899.9468.91918
HSA-MIR-335-3P99.9373.364958
HSA-MIR-6721-5P99.9368.922981
HSA-MIR-129799.9173.413162
HSA-MIR-6809-3P99.9171.453814
HSA-MIR-380-3P99.8970.181978
HSA-MIR-548AR-3P99.8571.263889
HSA-MIR-76599.8468.242442
HSA-MIR-548AZ-3P99.8270.563549
HSA-MIR-548BC99.8270.613524
HSA-MIR-548E-3P99.8270.593514
HSA-MIR-548F-3P99.8270.593540
HSA-MIR-6756-5P99.8267.972466
HSA-MIR-4760-5P99.8069.881619
HSA-MIR-4668-5P99.7970.583782
HSA-MIR-26A-5P99.7873.522303

Literature-anchored findings (GeneRIF, showing 6)

  • Kazrin colocalizes with periplakin and desmoplakin at desmosomes and with periplakin at the interdesmosomal plasma membrane, but its subcellular distribution is independent of periplakin [kazrin] (PMID:15337775)
  • kazrin is a dual regulator of intercellular adhesion and differentiation in keratinocytes and regulates these processes by Rho-dependent and -independent mechanisms (PMID:18840647)
  • These results suggested that Kazrin F might play an important role in regulating cellular apoptosis by interacting with ARC and Bax. (PMID:19727525)
  • kazrinE is a kazrin isoform with a liprin-homology domain(LHD), and associates with stabilised microtubules via its LHD. Overexpressed kazrinE in epidermal keratinocytes induces changes in cell shape and stimulates terminal differentiation. (PMID:19843585)
  • exons 5-15 of kazrin, encoding the nuclear localization signal and C-terminal domain, are not required for epidermal development and function (PMID:22513779)
  • KAZN as a diagnostic marker in ovarian cancer: a comprehensive analysis based on microarray, mRNA-sequencing, and methylation data. (PMID:35710397)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_reriokaznbENSDARG00000006601
danio_reriokaznaENSDARG00000076923
mus_musculusKaznENSMUSG00000040606
rattus_norvegicusKaznENSRNOG00000014322
drosophila_melanogasterLiprin-gammaFBGN0034720

Protein

Protein identifiers

KazrinQ674X7 (reviewed: Q674X7)

All UniProt accessions (4): A0A1B0GTU0, A0A1B0GWK2, B0QYQ6, Q674X7

UniProt curated annotations — full annotation on UniProt →

Function. Component of the cornified envelope of keratinocytes. May be involved in the interplay between adherens junctions and desmosomes. The function in the nucleus is not known.

Subunit / interactions. Isoform 2, isoform 3 and isoform 4 interact with PPL N-terminus.

Subcellular location. Cytoplasm. Cytoskeleton Cytoplasm. Cell junction. Desmosome. Nucleus Cytoplasm. Nucleus.

Tissue specificity. Isoform 2, isoform 3 and isoform 4 are expressed in several cell lines including keratinocytes and bladder and epidermoid carcinoma (at protein level). Isoform 2, isoform 3 and isoform 4 are expressed in hair follicle and interfollicular epidermis (at protein level).

Similarity. Belongs to the kazrin family.

Isoforms (5)

UniProt IDNamesCanonical?
Q674X7-11yes
Q674X7-22, A
Q674X7-33, B
Q674X7-44, C, D
Q674X7-55

RefSeq proteins (8): NP_001017999, NP_001018000, NP_001018001, NP_001357158, NP_001357159, NP_001357160, NP_056024, NP_963922* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR001660SAMDomain
IPR013761SAM/pointed_sfHomologous_superfamily
IPR037613Kazrin_SAM_rpt_1Domain
IPR037614KazrinFamily
IPR037615Kazrin_SAM_rpt_2Domain
IPR037616Kazrin_SAM_rpt_3Domain
IPR059089Kazrin_NDomain

Pfam: PF00536, PF07647, PF25986

UniProt features (25 total): splice variant 6, region of interest 5, domain 3, compositionally biased region 3, modified residue 3, sequence variant 2, chain 1, sequence conflict 1, coiled-coil region 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q674X7-F171.090.46

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (3): 352, 367, 387

Function

Pathways and Gene Ontology

Reactome pathways

3 pathways

IDPathway
R-HSA-6809371Formation of the cornified envelope
R-HSA-1266738Developmental Biology
R-HSA-6805567Keratinization

MSigDB gene sets: 164 (showing top): GOBP_EPITHELIUM_DEVELOPMENT, MOOTHA_GLYCOGEN_METABOLISM, MORF_MSH3, MORF_BRCA1, KAAB_HEART_ATRIUM_VS_VENTRICLE_UP, MORF_ATRX, MITSIADES_RESPONSE_TO_APLIDIN_DN, GOBP_EPIDERMAL_CELL_DIFFERENTIATION, LI_WILMS_TUMOR_VS_FETAL_KIDNEY_1_UP, ZIC1_01, SCHAEFFER_PROSTATE_DEVELOPMENT_48HR_DN, GOBP_EPIDERMIS_DEVELOPMENT, MASSARWEH_RESPONSE_TO_ESTRADIOL, GOBP_KERATINIZATION, GOCC_CELL_CELL_JUNCTION

GO Biological Process (1): keratinization (GO:0031424)

GO Molecular Function (1): protein binding (GO:0005515)

GO Cellular Component (9): cornified envelope (GO:0001533), nucleoplasm (GO:0005654), cytosol (GO:0005829), cytoskeleton (GO:0005856), nuclear speck (GO:0016607), desmosome (GO:0030057), nucleus (GO:0005634), cytoplasm (GO:0005737), anchoring junction (GO:0070161)

Reactome top-level categories

Rollup of top-2 pathways:

CategoryPathways
Keratinization1
Developmental Biology1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure3
keratinocyte differentiation1
multicellular organismal process1
binding1
plasma membrane1
nuclear lumen1
cytoplasm1
intracellular membraneless organelle1
nuclear ribonucleoprotein granule1
cell-cell junction1
intracellular membrane-bounded organelle1
intracellular anatomical structure1
cell junction1

Protein interactions and networks

STRING

612 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
KAZNPPLO60437748
KAZNARHGAP5Q13017569
KAZNZNF813Q6ZN06477
KAZNFAM110DQ8TAY7444
KAZNANKRD61A6NGH8426
KAZNELAVL1Q15717426
KAZNEVPLQ92817423
KAZNZDHHC14Q8IZN3416
KAZNEIF4G1Q04637410
KAZNARVCFO00192400
KAZNSH3RF3Q8TEJ3381
KAZNSMTNL2Q2TAL5378
KAZNCHST11Q9NPF2363
KAZNSTAMBPL1Q96FJ0354
KAZNRIMS2Q9UQ26353

IntAct

14 interactions, top by confidence:

ABTypeScore
LZTS2KAZNpsi-mi:“MI:0915”(physical association)0.560
KAZNLZTS2psi-mi:“MI:0915”(physical association)0.560
KAZNFXR1psi-mi:“MI:0915”(physical association)0.510
KAZNTSC1psi-mi:“MI:0915”(physical association)0.510
KAZNPLECpsi-mi:“MI:0915”(physical association)0.400
KAZNNS1psi-mi:“MI:0915”(physical association)0.370
ECE1KAZNpsi-mi:“MI:0915”(physical association)0.370
ARHGAP5KAZNpsi-mi:“MI:0914”(association)0.350
KAZNINPPL1psi-mi:“MI:0914”(association)0.350
COILKAZNpsi-mi:“MI:0915”(physical association)0.000

BioGRID (52): LZTS2 (Two-hybrid), KAZN (Affinity Capture-RNA), KAZN (Affinity Capture-MS), PPL (Reconstituted Complex), KAZN (Affinity Capture-Western), KAZN (Affinity Capture-MS), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid), KAZN (Two-hybrid)

ESM2 similar proteins: A0JNT9, A0JPP8, A1X157, O15169, O75145, O75335, P39880, P60469, Q07DZ5, Q08CF3, Q08E13, Q09YM8, Q2M1P5, Q2QLG9, Q2VUH7, Q32PN7, Q3TMW1, Q3UHC7, Q3UIL6, Q3UIW5, Q3UJV1, Q5DU25, Q5FWS6, Q5JU85, Q5PRF9, Q5XI59, Q5ZJ07, Q674X7, Q68UI8, Q69ZS8, Q6IPM2, Q6NZT2, Q6P402, Q6P730, Q6ZP65, Q80XS6, Q80Y83, Q8JZP9, Q8K1S6, Q8R4R9

Diamond homologs: A9C3W3, O35711, O75145, O75334, O75335, P60469, Q13136, Q21049, Q5FWS6, Q674X7, Q69ZS8, Q86W92, Q8BSS9, Q8C8U0, Q8ND30, Q91Z79, Q91Z80, Q94071

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

137 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance112
Likely benign2
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

542 predictions. Top by Δscore:

VariantEffectΔscore
1:14599220:CAAGG:Cdonor_loss0.9900
1:14599221:AAG:Adonor_loss0.9900
1:14599222:AGGT:Adonor_loss0.9900
1:14599223:GGT:Gdonor_loss0.9900
1:14599224:GT:Gdonor_loss0.9900
1:14599225:T:Adonor_loss0.9900
1:14623738:G:GGdonor_gain0.9700
1:14598845:G:GTdonor_gain0.9500
1:14598842:G:GTdonor_gain0.9200
1:14599286:G:GAdonor_gain0.8700
1:14599224:G:GGdonor_gain0.8600
1:14602015:A:Gacceptor_gain0.8600
1:14607556:GA:Gacceptor_gain0.8600
1:14599061:G:GTdonor_gain0.8500
1:14602028:A:Gacceptor_gain0.8500
1:14598864:C:Gdonor_gain0.8300
1:14611363:TAGA:Tdonor_gain0.8200
1:14611364:AGAA:Adonor_gain0.8200
1:14623737:T:Gdonor_gain0.8200
1:14615266:A:Tdonor_gain0.8000
1:14623741:T:Adonor_gain0.8000
1:14599219:GCAAG:Gdonor_gain0.7900
1:14599281:G:GTdonor_gain0.7900
1:14599804:G:GTdonor_gain0.7900
1:14599285:T:TAdonor_gain0.7700
1:14601545:A:AAdonor_gain0.7700
1:14602027:A:AGacceptor_gain0.7700
1:14608950:A:AGacceptor_gain0.7500
1:14602014:A:AGacceptor_gain0.7400
1:14601544:T:TAacceptor_gain0.7200

AlphaMissense

5072 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
1:14599074:T:CL26P1.000
1:14599086:T:CL30P1.000
1:15034794:T:CL155P1.000
1:15034815:T:CL162P1.000
1:15034827:T:CL166P1.000
1:15034848:T:AL173H1.000
1:15034848:T:CL173P1.000
1:15034851:G:CR174P1.000
1:15034856:T:CF176L1.000
1:15034857:T:CF176S1.000
1:15034857:T:GF176C1.000
1:15034858:C:AF176L1.000
1:15034858:C:GF176L1.000
1:15034860:T:AI177N1.000
1:15034863:G:CR178P1.000
1:15044140:T:CL236P1.000
1:15044152:T:CL240P1.000
1:15094293:T:AW446R1.000
1:15094293:T:CW446R1.000
1:15094309:T:AV451D1.000
1:15094317:T:AW454R1.000
1:15094317:T:CW454R1.000
1:15094380:G:TG475W1.000
1:15094381:G:AG475E1.000
1:15094888:T:CL501P1.000
1:15101589:T:AW532R1.000
1:15101589:T:CW532R1.000
1:15101650:G:AG552E1.000
1:15101724:A:CS577R1.000
1:15101726:C:AS577R1.000

dbSNP variants (sampled 300 via entrez): RS1000001536 (1:14879948 A>G), RS1000001765 (1:14498689 C>T), RS1000005974 (1:14666155 C>T), RS1000008911 (1:14660499 C>A), RS1000010694 (1:13977761 A>G), RS1000010960 (1:14580490 A>G), RS1000015440 (1:15015896 C>T), RS1000018167 (1:14158714 G>C), RS1000023592 (1:14165066 C>T), RS1000026351 (1:14826292 T>A,G), RS1000027198 (1:14286950 A>G), RS1000028915 (1:14737727 C>A,T), RS1000029872 (1:14985531 AAAAT>A), RS1000031524 (1:14110238 T>C), RS1000032441 (1:14320934 C>T)

Disease associations

OMIM: gene MIM:618301 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

20 associations (top):

StudyTraitp-value
GCST002927_10Mercury levels8.000000e-06
GCST002938_23Copper levels3.000000e-06
GCST003059_1Parkinson’s disease1.000000e-06
GCST003074_1Cerebral amyloid deposition in APOEe4 non-carriers (PET imaging)2.000000e-07
GCST003812_3Non-response to antidepressants and depression1.000000e-06
GCST004720_10Conotruncal heart defects (inherited effects)7.000000e-06
GCST006995_1Logical memory (delayed recall) in Alzheimer’s disease dementia5.000000e-07
GCST007576_106Chronotype2.000000e-11
GCST008152_61Weight2.000000e-06
GCST008153_4Lean body mass5.000000e-06
GCST008158_139Body mass index7.000000e-06
GCST008179_8Moderate-to-late spontaneous preterm birth5.000000e-06
GCST008792_1Urinary albumin-to-creatinine ratio in diabetes4.000000e-08
GCST008922_3Triacylglyceride levels4.000000e-08
GCST010570_1Polycystic ovary syndrome (reproductive subtype)2.000000e-10
GCST011743_11HDL cholesterol levels in HIV infection1.000000e-05
GCST012125_4Chronic pain9.000000e-07
GCST012310_13Schizophrenia x sex interaction3.000000e-06
GCST012311_21Schizophrenia x sex interaction3.000000e-06
GCST012490_377Femur bone mineral density x serum urate levels interaction3.000000e-08

EFO canonical traits (12, from GWAS)

EFO IDTrait name
EFO:0007707cerebral amyloid deposition measurement
EFO:0004874memory performance
EFO:0008328chronotype measurement
EFO:0004338body weight
EFO:0004995lean body mass
EFO:0004340body mass index
EFO:0006917spontaneous preterm birth
EFO:0007778urinary albumin to creatinine ratio
EFO:0004530triglyceride measurement
EFO:0004612high density lipoprotein cholesterol measurement
EFO:0008343sex interaction measurement
EFO:0004531urate measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

56 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Estradiolaffects binding, increases expression, affects cotreatment, decreases expression5
bisphenol Aincreases methylation, decreases expression, increases expression, affects cotreatment4
sodium arseniteincreases expression, affects methylation, decreases expression4
Valproic Acidincreases expression3
Vehicle Emissionsincreases expression, decreases expression, decreases reaction, increases abundance2
Benzo(a)pyreneaffects methylation, decreases methylation2
Aflatoxin B1affects methylation, increases methylation2
Particulate Matterdecreases expression, decreases reaction, increases abundance, increases expression2
aristolochic acid Idecreases expression1
FR900359affects phosphorylation1
dicrotophosincreases expression1
triphenyl phosphateaffects expression1
uranyl acetateaffects expression1
propionaldehydeincreases expression1
trichostatin Aincreases expression1
tris(1,3-dichloro-2-propyl)phosphateincreases expression1
butyraldehydeincreases expression1
perfluorooctanoic acidincreases expression1
benzo(e)pyreneaffects methylation1
potassium chromate(VI)affects cotreatment, decreases expression1
aflatoxin B2increases methylation1
S-(1,2-dichlorovinyl)cysteineaffects response to substance, increases expression1
N,N,N’,N’-tetrakis(2-pyridylmethyl)ethylenediaminedecreases expression1
epigallocatechin gallateaffects cotreatment, decreases expression1
di-n-butylphosphoric acidaffects expression1
perfluorooctane sulfonic aciddecreases expression1
abrinedecreases expression1
2-methyl-2H-pyrazole-3-carboxylic acid (2-methyl-4-o-tolylazophenyl)amidedecreases expression, decreases reaction1
bisphenol Sdecreases methylation1
Fulvestrantaffects cotreatment, increases methylation1

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.