Gene Gene information from NCBI Gene database.
Entrez ID 2651
Gene name Glucosaminyl (N-acetyl) transferase 2 (I blood group)
Gene symbol GCNT2
Synonyms (NCBI Gene)
CCATCTRCT13GCNT2CGCNT5IGNTIINACGT1NAGCT1ULG3bA360O19.2bA421M1.1
Chromosome 6
Chromosome location 6p24.3-p24.2
Summary This gene encodes the enzyme responsible for formation of the blood group I antigen. The i and I antigens are distinguished by linear and branched poly-N-acetyllactosaminoglycans, respectively. The encoded protein is the I-branching enzyme, a beta-1,6-N-a
SNPs SNP information provided by dbSNP.
9
SNP ID Visualize variation Clinical significance Consequence
rs55940927 G>A Pathogenic Coding sequence variant, missense variant, genic downstream transcript variant
rs56141211 G>A Pathogenic Coding sequence variant, missense variant, genic downstream transcript variant
rs137853339 G>A,C Pathogenic Missense variant, non coding transcript variant, genic upstream transcript variant, coding sequence variant
rs137853340 G>A Pathogenic Missense variant, non coding transcript variant, genic upstream transcript variant, coding sequence variant
rs786205577 A>G Likely-pathogenic Missense variant, genic downstream transcript variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
156
miRTarBase ID miRNA Experiments Reference
MIRT016749 hsa-miR-335-5p Microarray 18185580
MIRT021899 hsa-miR-128-3p Microarray 17612493
MIRT027404 hsa-miR-98-5p Microarray 19088304
MIRT028842 hsa-miR-26b-5p Microarray 19088304
MIRT1014953 hsa-miR-1236 CLIP-seq
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
28
GO ID Ontology Definition Evidence Reference
GO:0000139 Component Golgi membrane IEA
GO:0005515 Function Protein binding IPI 28514442, 32296183, 33961781
GO:0005794 Component Golgi apparatus IEA
GO:0006024 Process Glycosaminoglycan biosynthetic process TAS 8449405
GO:0006486 Process Protein glycosylation IEA
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
600429 4204 ENSG00000111846
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
Q8N0V5
Protein name N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase (N-acetylglucosaminyltransferase) (EC 2.4.1.150) (I-branching enzyme) (IGNT)
Protein function Branching enzyme that converts linear into branched poly-N-acetyllactosaminoglycans. Introduces the blood group I antigen during embryonic development. It is closely associated with the development and maturation of erythroid cells. {ECO:0000269
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF02485 Branch 97 358 Core-2/I-Branching enzyme Family
Tissue specificity TISSUE SPECIFICITY: [Isoform B]: Expressed in lens epithelium cells. {ECO:0000269|PubMed:12424189}.; TISSUE SPECIFICITY: [Isoform C]: Expressed in reticulocytes. {ECO:0000269|PubMed:12468428}.
Sequence
Sequence length 402
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG 
  Glycosphingolipid biosynthesis - lacto and neolacto series
Metabolic pathways
 
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
16
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
ADULT i BLOOD GROUP PHENOTYPE Pathogenic rs137853339, rs137853340 RCV000009702
RCV000009703
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Cataract 13 with adult I phenotype Pathogenic; Likely pathogenic rs185805779, rs2127444957, rs56141211, rs756999080, rs949335475, rs1184095219, rs148284531 RCV001376182
RCV001957678
RCV000009699
RCV003627553
RCV000692516
View all (2 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Developmental cataract Pathogenic; Likely pathogenic rs1114167313, rs1114167314 RCV000490781
RCV000490793
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
GCNT2-related disorder Pathogenic rs185805779 RCV004756226
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acute myeloid leukemia Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Adult i blood group with or without congenital cataract Uncertain significance; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Blood group, I system Uncertain significance; Benign; Conflicting classifications of pathogenicity; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Clear cell carcinoma of kidney Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Breast Carcinoma Breast Carcinoma BEFREE 21750175
★☆☆☆☆
Found in Text Mining only
Breast Neoplasms Breast neoplasm Pubtator 26678556 Associate
★☆☆☆☆
Found in Text Mining only
Cataract Cataract LHGDN 15161861
★☆☆☆☆
Found in Text Mining only
Cataract Cataract BEFREE 21541272, 21761136
★☆☆☆☆
Found in Text Mining only
Cataract Cataract Pubtator 21541272, 26622071, 27609212, 28839118, 29914532 Associate
★☆☆☆☆
Found in Text Mining only
CATARACT 13 WITH ADULT i PHENOTYPE Cataract UNIPROT_DG 11739194
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
CATARACT 13 WITH ADULT i PHENOTYPE Cataract CTD_human_DG
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
CATARACT 13 WITH ADULT i PHENOTYPE Cataract GENOMICS_ENGLAND_DG
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
CATARACT 13 WITH ADULT i PHENOTYPE Cataract CLINVAR_DG
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
cervical cancer Cervical Cancer BEFREE 28978096
★☆☆☆☆
Found in Text Mining only