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

Aliases for CHI3L2 Gene

Aliases for CHI3L2 Gene

  • Chitinase 3-Like 2 2 3
  • Chondrocyte Protein 39 3 4
  • YKL-39 3 4
  • YKL39 3 6
  • Chitinase-3-Like Protein 2 3
  • CHIL2 3

External Ids for CHI3L2 Gene

Previous GeneCards Identifiers for CHI3L2 Gene

  • GC01P112186
  • GC01P110642
  • GC01P110872
  • GC01P111069
  • GC01P111482
  • GC01P111571
  • GC01P111770
  • GC01P109641

Summaries for CHI3L2 Gene

Entrez Gene Summary for CHI3L2 Gene

  • The protein encoded by this gene is similar to bacterial chitinases but lacks chitinase activity. The encoded protein is secreted and is involved in cartilage biogenesis. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

GeneCards Summary for CHI3L2 Gene

CHI3L2 (Chitinase 3-Like 2) is a Protein Coding gene. GO annotations related to this gene include chitinase activity and chitin binding. An important paralog of this gene is CHIT1.

UniProtKB/Swiss-Prot for CHI3L2 Gene

  • Lectin that binds chitooligosaccharides and other glycans with high affinity, but not heparin. Has no chitinase activity.

No data available for Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for CHI3L2 Gene

Genomics for CHI3L2 Gene

Regulatory Elements for CHI3L2 Gene

Genomic Location for CHI3L2 Gene

111,200,771 bp from pter
111,243,440 bp from pter
42,670 bases
Plus strand

Genomic View for CHI3L2 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for CHI3L2 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for CHI3L2 Gene

Proteins for CHI3L2 Gene

  • Protein details for CHI3L2 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Chitinase-3-like protein 2
    Protein Accession:
    Secondary Accessions:
    • A6NNY3
    • B4DPR7
    • Q15749
    • Q15783
    • Q5VUV7
    • Q96F97

    Protein attributes for CHI3L2 Gene

    390 amino acids
    Molecular mass:
    43501 Da
    Quaternary structure:
    No Data Available
    • Sequence=AAB04534.1; Type=Erroneous initiation; Note=Translation N-terminally shortened.; Evidence={ECO:0000305}; Sequence=AAC50597.1; Type=Erroneous initiation; Note=Translation N-terminally extended.; Evidence={ECO:0000305};

    Three dimensional structures from OCA and Proteopedia for CHI3L2 Gene

    Alternative splice isoforms for CHI3L2 Gene


neXtProt entry for CHI3L2 Gene

Proteomics data for CHI3L2 Gene at MOPED

Post-translational modifications for CHI3L2 Gene

  • Ubiquitination at Lys199, Lys329, Lys340, Lys345, and Lys384
  • Glycosylation at Asn35
  • Modification sites at PhosphoSitePlus

Antibody Products

  • R&D Systems Antibodies for CHI3L2 (Chitinase 3-like 2)

No data available for DME Specific Peptides for CHI3L2 Gene

Domains for CHI3L2 Gene

Gene Families for CHI3L2 Gene

Suggested Antigen Peptide Sequences for CHI3L2 Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the glycosyl hydrolase 18 family.
  • Belongs to the glycosyl hydrolase 18 family.
genes like me logo Genes that share domains with CHI3L2: view

Function for CHI3L2 Gene

Molecular function for CHI3L2 Gene

GENATLAS Biochemistry:
chitinase 3-like 2,expressed in chondrocytes,synovial cell,lung,heart
UniProtKB/Swiss-Prot Function:
Lectin that binds chitooligosaccharides and other glycans with high affinity, but not heparin. Has no chitinase activity.

Gene Ontology (GO) - Molecular Function for CHI3L2 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds --
GO:0004568 NOT chitinase activity IDA 22742450
GO:0008061 chitin binding IDA 22742450
GO:0030246 carbohydrate binding IEA --
genes like me logo Genes that share ontologies with CHI3L2: view

Animal Model Products

CRISPR Products

miRNA for CHI3L2 Gene

miRTarBase miRNAs that target CHI3L2

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for CHI3L2

In Situ Assay Products

Flow Cytometry Products

No data available for Enzyme Numbers (IUBMB) , Phenotypes , Animal Models , Transcription Factor Targets and HOMER Transcription for CHI3L2 Gene

Localization for CHI3L2 Gene

Subcellular locations from UniProtKB/Swiss-Prot for CHI3L2 Gene


Subcellular locations from

Jensen Localization Image for CHI3L2 Gene COMPARTMENTS Subcellular localization image for CHI3L2 gene
Compartment Confidence
extracellular 4
golgi apparatus 1
mitochondrion 1

Gene Ontology (GO) - Cellular Components for CHI3L2 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005615 extracellular space IDA 16502470
genes like me logo Genes that share ontologies with CHI3L2: view

Pathways for CHI3L2 Gene

SuperPathways for CHI3L2 Gene

No Data Available

Interacting Proteins for CHI3L2 Gene

STRING Interaction Network Preview (showing 2 interactants - click image to see details)
Selected Interacting proteins: ENSP00000358763 for CHI3L2 Gene via STRING

Gene Ontology (GO) - Biological Process for CHI3L2 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005975 carbohydrate metabolic process IEA --
GO:0006032 NOT chitin catabolic process IBA --
GO:0006955 immune response IBA --
genes like me logo Genes that share ontologies with CHI3L2: view

No data available for Pathways by source for CHI3L2 Gene

Drugs for CHI3L2 Gene

(2) HMDB Compounds for CHI3L2 Gene

Compound Synonyms Cas Number PubMed IDs
  • 2-(Acetylamino)-2-deoxyhexose
  • Dihydrogen oxide
genes like me logo Genes that share compounds with CHI3L2: view

Transcripts for CHI3L2 Gene

Unigene Clusters for CHI3L2 Gene

Chitinase 3-like 2:
Representative Sequences:

CRISPR Products

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for CHI3L2

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for CHI3L2 Gene

No ASD Table

Relevant External Links for CHI3L2 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for CHI3L2 Gene

mRNA expression in normal human tissues for CHI3L2 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for CHI3L2 Gene

This gene is overexpressed in Minor Salivary Gland (8.2) and Lung (4.4).

Protein differential expression in normal tissues for CHI3L2 Gene

This gene is overexpressed in Salivary gland (44.8), Synovial fluid (8.0), and Breast (6.5).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, MOPED, and MaxQB for CHI3L2 Gene

SOURCE GeneReport for Unigene cluster for CHI3L2 Gene Hs.514840

mRNA Expression by UniProt/SwissProt for CHI3L2 Gene

Tissue specificity: Highest expression in chondrocytes, followed by synoviocytes, lung and heart. Not detected in spleen, pancreas, and liver. May also be expressed in developing brain and placenta.
genes like me logo Genes that share expressions with CHI3L2: view

Expression partners for CHI3L2 Gene

* - Elite partner

Primer Products

  • QuantiTect SYBR Green Assays in human,mouse,rat
  • Pre-validated RT² qPCR Primer Assay in human,mouse,rat
  • QuantiFast Probe-based Assays in human,mouse,rat

In Situ Assay Products

Orthologs for CHI3L2 Gene

This gene was present in the common ancestor of animals and fungi.

Orthologs for CHI3L2 Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia CHI3L2 35
  • 87.99 (n)
  • 88.25 (a)
CHI3L2 36
  • 87 (a)
(Pan troglodytes)
Mammalia CHI3L2 35
  • 99.4 (n)
  • 99.23 (a)
CHI3L2 36
  • 99 (a)
(Monodelphis domestica)
Mammalia CHI3L2 36
  • 62 (a)
(Ornithorhynchus anatinus)
Mammalia -- 36
  • 36 (a)
(Anolis carolinensis)
Reptilia -- 36
  • 45 (a)
-- 36
  • 48 (a)
fruit fly
(Drosophila melanogaster)
Insecta CG10531 37
  • 37 (a)
CG2989 37
  • 40 (a)
CG3044 37
  • 29 (a)
CG9357 37
  • 38 (a)
Chit 37
  • 26 (a)
Cht1 37
  • 36 (a)
Cht2 37
  • 34 (a)
Cht3 37
  • 37 (a)
Idgf4 37
  • 26 (a)
Cht7 36
  • 17 (a)
(Caenorhabditis elegans)
Secernentea cht-1 36
  • 24 (a)
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes CTS2 36
  • 19 (a)
sea squirt
(Ciona savignyi)
Ascidiacea CSA.8046 36
  • 21 (a)
Species with no ortholog for CHI3L2:
  • 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)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • dog (Canis familiaris)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • 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)
  • mouse (Mus musculus)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rat (Rattus norvegicus)
  • 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)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • zebrafish (Danio rerio)

Evolution for CHI3L2 Gene

Gene Tree for CHI3L2 (if available)
Gene Tree for CHI3L2 (if available)

Paralogs for CHI3L2 Gene

Paralogs for CHI3L2 Gene Pseudogenes for CHI3L2 Gene

genes like me logo Genes that share paralogs with CHI3L2: view

Variants for CHI3L2 Gene

Sequence variations from dbSNP and Humsavar for CHI3L2 Gene

SNP ID Clin Chr 01 pos Sequence Context AA Info Type MAF
rs8535 -- 111,243,307(+) CCAGG(A/C)TGGCC utr-variant-3-prime
rs13721 - 111,241,360(+) TCACG(A/C/T)GGCTC synonymous-codon, reference, missense
rs755467 -- 111,227,801(+) GGAAA(G/T)TTGGT intron-variant, upstream-variant-2KB
rs942690 -- 111,238,285(-) GAAGA(A/G)ATTTA intron-variant
rs942693 -- 111,241,536(-) GCCTC(A/G)GAAGC intron-variant

Structural Variations from Database of Genomic Variants (DGV) for CHI3L2 Gene

Variant ID Type Subtype PubMed ID
nsv10639 CNV Gain 18304495
nsv463250 CNV Loss 19166990

Relevant External Links for CHI3L2 Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for CHI3L2 Gene

Disorders for CHI3L2 Gene

Relevant External Links for CHI3L2

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator

No disorders were found for CHI3L2 Gene.

No data available for MalaCards , OMIM , UniProtKB/Swiss-Prot , University of Copenhagen DISEASES , Novoseek inferred disease relationships and Genatlas for CHI3L2 Gene

Publications for CHI3L2 Gene

  1. Isolation and sequence of a novel human chondrocyte protein related to mammalian members of the chitinase protein family. (PMID: 8702629) Hu B. … Price P.A. (J. Biol. Chem. 1996) 2 3 4 23
  2. Personalized smoking cessation: interactions between nicotine dose, dependence and quit-success genotype score. (PMID: 20379614) Rose J.E. … Uhl G.R. (Mol. Med. 2010) 3 48
  3. Enhanced expression of the human chitinase 3-like 2 gene (YKL-39) but not chitinase 3-like 1 gene (YKL-40) in osteoarthritic cartilage. (PMID: 12435396) Steck E. … Richter W. (Biochem. Biophys. Res. Commun. 2002) 3 23
  4. Human YKL-39 is a pseudo-chitinase with retained chitooligosaccharide-binding properties. (PMID: 22742450) Schimpl M. … van Aalten D.M. (Biochem. J. 2012) 3 4
  5. Human YKL39 (chitinase 3-like protein 2), an osteoarthritis-associated gene, enhances proliferation and type II collagen expression in ATDC5 cells. (PMID: 23291184) Miyatake K. … Muneta T. (Biochem. Biophys. Res. Commun. 2013) 3

Products for CHI3L2 Gene

Sources for CHI3L2 Gene

Back to Top