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GCNT2 glucosaminyl (N-acetyl) transferase 2 (I blood group) [ Homo sapiens (human) ]

Gene ID: 2651, updated on 4-Jan-2025

Summary

Official Symbol
GCNT2provided by HGNC
Official Full Name
glucosaminyl (N-acetyl) transferase 2 (I blood group)provided by HGNC
Primary source
HGNC:HGNC:4204
See related
Ensembl:ENSG00000111846 MIM:600429; AllianceGenome:HGNC:4204
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
II; CCAT; IGNT; ULG3; GCNT5; GCNT2C; NACGT1; NAGCT1; CTRCT13; bA421M1.1; bA360O19.2
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-acetylglucosaminyltransferase responsible for the conversion of fetal i antigen to adult I antigen in erythrocytes during embryonic development. Mutations in this gene have been associated with adult i blood group phenotype. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
Expression
Broad expression in prostate (RPKM 6.7), small intestine (RPKM 2.4) and 21 other tissues See more
Orthologs
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Genomic context

See GCNT2 in Genome Data Viewer
Location:
6p24.3-p24.2
Exon count:
11
Annotation release Status Assembly Chr Location
RS_2024_08 current GRCh38.p14 (GCF_000001405.40) 6 NC_000006.12 (10521351..10629368)
RS_2024_08 current T2T-CHM13v2.0 (GCF_009914755.1) 6 NC_060930.1 (10389059..10497066)
RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 6 NC_000006.11 (10521584..10629601)

Chromosome 6 - NC_000006.12Genomic Context describing neighboring genes Neighboring gene H3K4me1 hESC enhancer GRCh37_chr6:10466572-10467078 Neighboring gene long intergenic non-protein coding RNA 2522 Neighboring gene uncharacterized LOC101928146 Neighboring gene glucosaminyl (N-acetyl) transferase 2, I-branching enzyme (I blood group) pseudogene Neighboring gene H3K27ac hESC enhancer GRCh37_chr6:10518715-10519215 Neighboring gene NFE2L2 motif-containing MPRA enhancer 266 Neighboring gene H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10519455-10520150 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 23967 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 23968 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 23969 Neighboring gene OCT4-NANOG-H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10555959-10556854 Neighboring gene OCT4-NANOG hESC enhancer GRCh37_chr6:10558788-10559335 Neighboring gene H3K27ac hESC enhancer GRCh37_chr6:10559462-10560216 Neighboring gene H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10564953-10565514 Neighboring gene OCT4-NANOG-H3K27ac hESC enhancer GRCh37_chr6:10575275-10575920 Neighboring gene OCT4-NANOG-H3K27ac hESC enhancer GRCh37_chr6:10575921-10576566 Neighboring gene NANOG-H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10576567-10577212 Neighboring gene Sharpr-MPRA regulatory region 5327 Neighboring gene OCT4-NANOG-H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10582905-10583878 Neighboring gene OCT4-NANOG-H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10585827-10586799 Neighboring gene ribosomal protein L21 pseudogene 63 Neighboring gene H3K27ac hESC enhancer GRCh37_chr6:10589255-10589802 Neighboring gene NANOG-H3K27ac-H3K4me1 hESC enhancer GRCh37_chr6:10596165-10597152 Neighboring gene GCNT2 pseudogene 1 Neighboring gene MPRA-validated peak5653 silencer Neighboring gene chromosome 6 open reading frame 52 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 23970 Neighboring gene H3K27ac hESC enhancer GRCh37_chr6:10694821-10695423 Neighboring gene PAK1 interacting protein 1

Genomic regions, transcripts, and products

Expression

  • Project title: Tissue-specific circular RNA induction during human fetal development
  • Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
  • BioProject: PRJNA270632
  • Publication: PMID 26076956
  • Analysis date: Mon Apr 2 22:54:59 2018

Bibliography

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Phenotypes

Associated conditions

Description Tests
Blood group, I system
MedGen: C0020717 OMIM: 110800 GeneReviews: Not available
Compare labs
Cataract 13 with adult I phenotype
MedGen: C3805373 OMIM: 116700 GeneReviews: Not available
Compare labs

Pathways from PubChem

Interactions

General gene information

Clone Names

  • MGC163396

Gene Ontology Provided by GOA

Process Evidence Code Pubs
involved_in glycosaminoglycan biosynthetic process PubMed 
involved_in maintenance of lens transparency PubMed 
involved_in multicellular organism development PubMed 
involved_in negative regulation of cell-substrate adhesion PubMed 
involved_in positive regulation of ERK1 and ERK2 cascade PubMed 
involved_in positive regulation of cell migration PubMed 
involved_in positive regulation of cell population proliferation  
involved_in positive regulation of epithelial to mesenchymal transition PubMed 
involved_in positive regulation of heterotypic cell-cell adhesion PubMed 
involved_in positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction PubMed 
involved_in post-transcriptional regulation of gene expression PubMed 
involved_in protein glycosylation  
involved_in protein glycosylation PubMed 
involved_in transforming growth factor beta receptor signaling pathway  
involved_in transforming growth factor beta receptor signaling pathway PubMed 
Component Evidence Code Pubs
located_in Golgi apparatus  
located_in Golgi membrane  
located_in membrane PubMed 

General protein information

Preferred Names
N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase
Names
I beta-1,6-N-acetylglucosaminyltransferase
Ii blood group
beta-1,6-N-acetylglucosaminyltransferase 2
glucosaminyl (N-acetyl) transferase 2, I-branching enzyme (I blood group)
NP_001361676.1
NP_001482.1
NP_663624.1
NP_663630.2
XP_005249054.1
XP_005249056.1
XP_006715115.1
XP_011512770.1
XP_047274588.1
XP_047274589.1
XP_054188133.1
XP_054188134.1
XP_054188135.1
XP_054188136.1
XP_054188137.1
XP_054188138.1
XP_054188139.1
XP_054188140.1
XP_054211120.1
XP_054211121.1
XP_054211122.1
XP_054211123.1
XP_054211124.1
XP_054211125.1
XP_054211126.1
XP_054211127.1
XP_054211128.1

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_007469.3 RefSeqGene

    Range
    34129..142146
    Download
    GenBank, FASTA, Sequence Viewer (Graphics), LRG_819

mRNA and Protein(s)

  1. NM_001374747.1NP_001361676.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform A

    Status: REVIEWED

    Source sequence(s)
    AL139039, AL358777
    Consensus CDS
    CCDS34338.1
    UniProtKB/Swiss-Prot
    Q06430, Q5T4J1, Q5W0E9, Q6T5E5, Q8N0V5, Q8NFS9
    UniProtKB/TrEMBL
    Q08M29
    Related
    ENSP00000368917.3, ENST00000379597.7
    Conserved Domains (1) summary
    pfam02485
    Location:97357
    Branch; Core-2/I-Branching enzyme
  2. NM_001491.3NP_001482.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform B

    See identical proteins and their annotated locations for NP_001482.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) represents the longest transcript and encodes isoform B.
    Source sequence(s)
    AL139039, AL358777
    Consensus CDS
    CCDS4512.1
    UniProtKB/TrEMBL
    Q8WXK6, Q8WXK7
    Related
    ENSP00000314844.3, ENST00000316170.9
    Conserved Domains (1) summary
    pfam02485
    Location:95356
    Branch; Core-2/I-Branching enzyme
  3. NM_145649.5NP_663624.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform A

    See identical proteins and their annotated locations for NP_663624.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) contains a different 5' end exon compared to variant 2. The encoded isoform (A) is longer and has a distinct N-terminus, compared to isoform B.
    Source sequence(s)
    AL139039, AL358777
    Consensus CDS
    CCDS34338.1
    UniProtKB/Swiss-Prot
    Q06430, Q5T4J1, Q5W0E9, Q6T5E5, Q8N0V5, Q8NFS9
    UniProtKB/TrEMBL
    Q08M29
    Related
    ENSP00000419411.2, ENST00000495262.7
    Conserved Domains (1) summary
    pfam02485
    Location:97357
    Branch; Core-2/I-Branching enzyme
  4. NM_145655.4NP_663630.2  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform C

    See identical proteins and their annotated locations for NP_663630.2

    Status: REVIEWED

    Description
    Transcript Variant: This variant (3) contains a different 5' end exon compared to variant 2. The encoded isoform (C) is longer and has a distinct N-terminus, compared to isoform B.
    Source sequence(s)
    AL358777
    Consensus CDS
    CCDS4513.1
    UniProtKB/TrEMBL
    A0AAG2TJN9
    Related
    ENSP00000265012.4, ENST00000265012.5
    Conserved Domains (1) summary
    pfam02485
    Location:97358
    Branch; Core-2/I-Branching enzyme

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2024_08

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000006.12 Reference GRCh38.p14 Primary Assembly

    Range
    10521351..10629368
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_006715052.4XP_006715115.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X1

    See identical proteins and their annotated locations for XP_006715115.1

    UniProtKB/Swiss-Prot
    Q06430, Q5T4J1, Q5W0E9, Q6T5E5, Q8N0V5, Q8NFS9
    UniProtKB/TrEMBL
    Q08M29
    Conserved Domains (1) summary
    pfam02485
    Location:97357
    Branch; Core-2/I-Branching enzyme
  2. XM_047418633.1XP_047274589.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X4

    UniProtKB/TrEMBL
    Q08M29
  3. XM_005248999.3XP_005249056.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X4

    See identical proteins and their annotated locations for XP_005249056.1

    UniProtKB/TrEMBL
    Q08M29
    Conserved Domains (1) summary
    pfam02485
    Location:20281
    Branch; Core-2/I-Branching enzyme
  4. XM_047418632.1XP_047274588.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X3

  5. XM_011514468.4XP_011512770.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X5

    Conserved Domains (1) summary
    pfam02485
    Location:97316
    Branch; Core-2/I-Branching enzyme
  6. XM_005248997.4XP_005249054.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X2

    UniProtKB/TrEMBL
    A0AAG2TJ15
    Conserved Domains (1) summary
    pfam02485
    Location:95302
    Branch; Core-2/I-Branching enzyme

RNA

  1. XR_926136.3 RNA Sequence

  2. XR_002956275.2 RNA Sequence

  3. XR_007059235.1 RNA Sequence

Reference GRCh38.p14 PATCHES

Genomic

  1. NW_018654713.1 Reference GRCh38.p14 PATCHES

    Range
    32235..140252
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_054332163.1XP_054188138.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X4

    UniProtKB/TrEMBL
    Q08M29
  2. XM_054332161.1XP_054188136.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X3

  3. XM_054332165.1XP_054188140.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X5

  4. XM_054332158.1XP_054188133.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X1

    UniProtKB/Swiss-Prot
    Q06430, Q5T4J1, Q5W0E9, Q6T5E5, Q8N0V5, Q8NFS9
    UniProtKB/TrEMBL
    Q08M29
  5. XM_054332164.1XP_054188139.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X4

    UniProtKB/TrEMBL
    Q08M29
  6. XM_054332159.1XP_054188134.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X6

    UniProtKB/TrEMBL
    Q8WXK6, Q8WXK7
  7. XM_054332160.1XP_054188135.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X2

    UniProtKB/TrEMBL
    A0AAG2TJ15
  8. XM_054332162.1XP_054188137.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X7

RNA

  1. XR_008485746.1 RNA Sequence

  2. XR_008485748.1 RNA Sequence

  3. XR_008485747.1 RNA Sequence

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060930.1 Alternate T2T-CHM13v2.0

    Range
    10389059..10497066
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_054355151.1XP_054211126.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X4

    UniProtKB/TrEMBL
    Q08M29
  2. XM_054355147.1XP_054211122.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X8

  3. XM_054355149.1XP_054211124.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X3

  4. XM_054355153.1XP_054211128.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X5

  5. XM_054355145.1XP_054211120.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X1

    UniProtKB/Swiss-Prot
    Q06430, Q5T4J1, Q5W0E9, Q6T5E5, Q8N0V5, Q8NFS9
    UniProtKB/TrEMBL
    Q08M29
  6. XM_054355152.1XP_054211127.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X4

    UniProtKB/TrEMBL
    Q08M29
  7. XM_054355146.1XP_054211121.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X6

    UniProtKB/TrEMBL
    Q8WXK6, Q8WXK7
  8. XM_054355148.1XP_054211123.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X2

    UniProtKB/TrEMBL
    A0AAG2TJ15
  9. XM_054355150.1XP_054211125.1  N-acetyllactosaminide beta-1,6-N-acetylglucosaminyl-transferase isoform X9

RNA

  1. XR_008487295.1 RNA Sequence

  2. XR_008487297.1 RNA Sequence

  3. XR_008487296.1 RNA Sequence

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