Free for academic non-profit institutions. Other users need a Commercial license

Aliases for KERA Gene

Aliases for KERA Gene

  • Keratocan 2 3
  • Keratan Sulfate Proteoglycan Keratocan 3 4
  • SLRR2B 3 4
  • CNA2 3 6
  • KTN 3 4
  • Keratocan Proteoglycan 2

External Ids for KERA Gene

Previous HGNC Symbols for KERA Gene

  • CNA2

Previous GeneCards Identifiers for KERA Gene

  • GC12M090766
  • GC12M091891
  • GC12M091377
  • GC12M089946
  • GC12M088512

Summaries for KERA Gene

Entrez Gene Summary for KERA Gene

  • The protein encoded by this gene is a keratan sulfate proteoglycan that is involved in corneal transparency. Defects in this gene are a cause of autosomal recessive cornea plana 2 (CNA2).[provided by RefSeq, May 2010]

GeneCards Summary for KERA Gene

KERA (Keratocan) is a Protein Coding gene. Diseases associated with KERA include cornea plana congenita, recessive and congenital cornea plana. Among its related pathways are Disease and Metabolism. An important paralog of this gene is ECM2.

UniProtKB/Swiss-Prot for KERA Gene

  • May be important in developing and maintaining corneal transparency and for the structure of the stromal matrix

Gene Wiki entry for KERA Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for KERA Gene

Genomics for KERA Gene

Regulatory Elements for KERA Gene

Genomic Location for KERA Gene

91,050,491 bp from pter
91,058,354 bp from pter
7,864 bases
Minus strand

Genomic View for KERA Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for KERA Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for KERA Gene

Proteins for KERA Gene

  • Protein details for KERA Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Protein Accession:
    Secondary Accessions:

    Protein attributes for KERA Gene

    352 amino acids
    Molecular mass:
    40509 Da
    Quaternary structure:
    No Data Available

neXtProt entry for KERA Gene

Proteomics data for KERA Gene at MOPED

Post-translational modifications for KERA Gene

Other Protein References for KERA Gene

ENSEMBL proteins:
Reactome Protein details:
REFSEQ proteins:

No data available for DME Specific Peptides for KERA Gene

Domains for KERA Gene

Gene Families for KERA Gene

  • SLRR :Proteoglycans / Extracellular Matrix : Small leucine-rich repeats

Protein Domains for KERA Gene

Suggested Antigen Peptide Sequences for KERA Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • O60938
  • Contains 1 LRRNT domain.
  • Belongs to the small leucine-rich proteoglycan (SLRP) family. SLRP class II subfamily.
  • Contains 10 LRR (leucine-rich) repeats.
genes like me logo Genes that share domains with KERA: view

Function for KERA Gene

Molecular function for KERA Gene

GENATLAS Biochemistry:
keratocan,keratan sulfate proteoglycan,on of the three major constituents of corneal stroma,expressed during eye development and in adult corneal keratocytes,small leucine-rich proteoglycan family
UniProtKB/Swiss-Prot Function:
May be important in developing and maintaining corneal transparency and for the structure of the stromal matrix

Gene Ontology (GO) - Molecular Function for KERA Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0003674 molecular_function ND --
GO:0005515 protein binding --
genes like me logo Genes that share ontologies with KERA: view

Phenotypes for KERA Gene

genes like me logo Genes that share phenotypes with KERA: view

Animal Models for KERA Gene

MGI Knock Outs for KERA:

miRNA for KERA Gene

miRTarBase miRNAs that target KERA

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for KERA

In Situ Assay Products

Flow Cytometry Products

No data available for Enzyme Numbers (IUBMB) , Transcription Factor Targeting and HOMER Transcription for KERA Gene

Localization for KERA Gene

Subcellular locations from UniProtKB/Swiss-Prot for KERA Gene

Secreted, extracellular space, extracellular matrix.

Subcellular locations from

Jensen Localization Image for KERA Gene COMPARTMENTS Subcellular localization image for KERA gene
Compartment Confidence
extracellular 5
golgi apparatus 4
lysosome 4
vacuole 4
cytoskeleton 1
peroxisome 1
plasma membrane 1

Gene Ontology (GO) - Cellular Components for KERA Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005576 extracellular region TAS --
GO:0005578 proteinaceous extracellular matrix NAS 10802664
GO:0005796 Golgi lumen TAS --
GO:0043202 lysosomal lumen TAS --
genes like me logo Genes that share ontologies with KERA: view

Pathways for KERA Gene

genes like me logo Genes that share pathways with KERA: view

Pathways by source for KERA Gene

Interacting Proteins for KERA Gene

Gene Ontology (GO) - Biological Process for KERA Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005975 carbohydrate metabolic process TAS --
GO:0007601 visual perception IEA --
GO:0018146 keratan sulfate biosynthetic process TAS --
GO:0030203 glycosaminoglycan metabolic process TAS --
GO:0042339 keratan sulfate metabolic process TAS --
genes like me logo Genes that share ontologies with KERA: view

Compounds for KERA Gene

(1) HMDB Compounds for KERA Gene

Compound Synonyms Cas Number PubMed IDs
  • Kerato sulfate
genes like me logo Genes that share compounds with KERA: view

Transcripts for KERA Gene

mRNA/cDNA for KERA Gene

(19) Selected AceView cDNA sequences:
(4) Additional mRNA sequences :
(2) REFSEQ mRNAs :
(1) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for KERA Gene

Representative Sequences:

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for KERA

Primer Products

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for KERA Gene

No ASD Table

Relevant External Links for KERA Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for KERA Gene

mRNA expression in normal human tissues for KERA Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for KERA Gene

This gene is overexpressed in Uterus (14.2), Breast - Mammary Tissue (8.2), and Muscle - Skeletal (6.7).

Protein differential expression in normal tissues for KERA Gene

This gene is overexpressed in Adrenal (68.5).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, and MOPED for KERA Gene

SOURCE GeneReport for Unigene cluster for KERA Gene Hs.125750

mRNA Expression by UniProt/SwissProt for KERA Gene

Tissue specificity: Cornea. Increased expression in the stroma of keratoconus corneas. Also detected in trachea, and in low levels, in intestine, skeletal muscle, ovary, lung and putamen.
genes like me logo Genes that share expressions with KERA: view

Expression partners for KERA Gene

In Situ Assay Products

Orthologs for KERA Gene

This gene was present in the common ancestor of chordates.

Orthologs for KERA Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia KERA 35
  • 89.27 (n)
  • 92.31 (a)
  • 92 (a)
(Canis familiaris)
Mammalia KERA 35
  • 89.05 (n)
  • 92.86 (a)
  • 93 (a)
(Mus musculus)
Mammalia Kera 35
  • 83.33 (n)
  • 86.57 (a)
Kera 16
Kera 36
  • 86 (a)
(Pan troglodytes)
Mammalia KERA 35
  • 99.53 (n)
  • 99.72 (a)
  • 100 (a)
(Rattus norvegicus)
Mammalia Kera 35
  • 82.19 (n)
  • 87.14 (a)
(Monodelphis domestica)
Mammalia KERA 36
  • 85 (a)
(Ornithorhynchus anatinus)
Mammalia KERA 36
  • 84 (a)
(Gallus gallus)
Aves KERA 35
  • 70.55 (n)
  • 69.89 (a)
  • 70 (a)
(Anolis carolinensis)
Reptilia KERA 36
  • 64 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia kera 35
  • 62.27 (n)
  • 58.45 (a)
(Danio rerio)
Actinopterygii kera 35
  • 61.36 (n)
  • 62.34 (a)
kera 36
  • 56 (a)
sea squirt
(Ciona savignyi)
Ascidiacea -- 36
  • 27 (a)
Species with no ortholog for KERA:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for KERA Gene

Gene Tree for KERA (if available)
Gene Tree for KERA (if available)

Paralogs for KERA Gene

Paralogs for KERA Gene

Selected SIMAP similar genes for KERA Gene using alignment to 1 proteins:

genes like me logo Genes that share paralogs with KERA: view

Variants for KERA Gene

Sequence variations from dbSNP and Humsavar for KERA Gene

SNP ID Clin Chr 12 pos Sequence Context AA Info Type MAF
rs734722 -- 91,055,135(-) AAACT(A/G)AATGC intron-variant
rs737111 - 91,055,578(-) TAATG(G/T)GATTC missense, reference
rs1920771 -- 91,051,772(+) TACTG(C/T)TAAGA intron-variant
rs1920772 -- 91,052,069(+) ACATA(A/C)CTTTA intron-variant
rs1920773 -- 91,052,319(+) CAGGG(A/T)ACTCT intron-variant

Structural Variations from Database of Genomic Variants (DGV) for KERA Gene

Variant ID Type Subtype PubMed ID
nsv899425 CNV Gain 21882294

Relevant External Links for KERA Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for KERA Gene

Disorders for KERA Gene

(1) OMIM Diseases for KERA Gene (603288)


  • The autosomal recessive cornea plana 2 (CNA2) [MIM:217300]: In CNA2, the forward convex curvature is flattened, leading to a decrease in refraction, reduced visual activity, extreme hyperopia (usually plus 10 d or more), hazy corneal limbus, opacities in the corneal parenchyma, and marked arcus senilis (often detected at an early age). CNA2 is a rare disorder with a worldwide distribution, but a high prevalence in the Finnish population. {ECO:0000269 PubMed:10802664, ECO:0000269 PubMed:11726611}. Note=The disease is caused by mutations affecting the gene represented in this entry.

(3) University of Copenhagen DISEASES for KERA Gene

Relevant External Links for KERA

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
genes like me logo Genes that share disorders with KERA: view

No data available for Novoseek inferred disease relationships and Genatlas for KERA Gene

Publications for KERA Gene

  1. Structure and sequence of the gene encoding human keratocan. (PMID: 10565548) Tasheva E.S. … Conrad G.W. (DNA Seq. 1999) 2 3 4 23
  2. Mutations in KERA, encoding keratocan, cause cornea plana. (PMID: 10802664) Pellegata N.S. … de la Chapelle A. (Nat. Genet. 2000) 2 3 4 23
  3. Assignment of keratocan gene (KERA) to human chromosome band 12q22 by in situ hybridization. (PMID: 10828599) Tasheva E.S. … Conrad G.W. (Cytogenet. Cell Genet. 2000) 3 23
  4. Identification and characterization of conserved cis-regulatory elements in the human keratocan gene promoter. (PMID: 10899581) Tasheva E.S. … Conrad G.W. (Biochim. Biophys. Acta 2000) 3 23
  5. Recessive cornea plana in the Kingdom of Saudi Arabia. (PMID: 17011957) Khan A.O. … Meyer B. (Ophthalmology 2006) 3 23

Products for KERA Gene

Sources for KERA Gene

Back to Top