ISDA: 5HGV

Deposition Date 2016-01-08

Release Date 2016-09-14

Last Version Date 2024-10-30

Entry Detail

PDB ID:

5HGV

Keywords:

TRANSFERASE/PEPTIDE

Title:

Structure of an O-GlcNAc transferase point mutant, D554N in complex with peptide

Biological Source:

Source Organism(s):

Homo sapiens (Taxon ID: 9606)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.05 Å

R-Value Free:

0.23

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

I 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110 kDa subunit
Gene (Uniprot):OGT
Mutagens:D554N
Chain IDs:A, C
Chain Length:719
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:O15294 Pfam ID:PF13414, PF13844, PF13424 EC:2.4.1.255

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:TYR-PRO-GLY-GLY-SER-THR-PRO-VAL-SER-SER-ALA-ASN-MET-MET
Chain IDs:B, D
Chain Length:14
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P68400

Ligand Molecules

NAG

SO4

UDP

Primary Citation

How the glycosyltransferase OGT catalyzes amide bond cleavage.

Janetzko, J, Trauger, S.A, Lazarus, M.B, Walker, S.Show

Nat.Chem.Biol. 12 899 901 (2016)

PMID: 27618188 DOI: 10.1038/nchembio.2173

Abstact

The essential human enzyme O-linked β-N-acetylglucosamine transferase (OGT), known for modulating the functions of nuclear and cytoplasmic proteins through serine and threonine glycosylation, was unexpectedly implicated in the proteolytic maturation of the cell cycle regulator host cell factor-1 (HCF-1). Here we show that HCF-1 cleavage occurs via glycosylation of a glutamate side chain followed by on-enzyme formation of an internal pyroglutamate, which undergoes spontaneous backbone hydrolysis.

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Primary Citation of related structures

Abstact

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