ISDA

Deposition Date 2013-01-17

Release Date 2013-12-11

Last Version Date 2024-11-06

Entry Detail

PDB ID:

4ISW

Keywords:

TRANSFERASE

Title:

Crystal Structure of Phosphorylated C.elegans Thymidylate Synthase in Complex with dUMP

Biological Source:

Source Organism:

Caenorhabditis elegans (Taxon ID: 6239)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.14 Å

R-Value Free:

0.26

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

P 32 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Thymidylate synthase
Chain IDs:A, B
Chain Length:315
Number of Molecules:2
Biological Source:Caenorhabditis elegans

UniProt ID:Q9Y052 Pfam ID:PF00303

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
SEP	A	SER	PHOSPHOSERINE

Ligand Molecules

UMP

Primary Citation

Crystal structure of phosphoramide-phosphorylated thymidylate synthase reveals pSer127, reflecting probably pHis to pSer phosphotransfer.

Wilk, P, Jarmua, A, Ruman, T, Banaszak, K, Rypniewski, W, Ciesla, J, Dowiercia, A, Rode, W.Show

Bioorg.Chem. 52C 44 49 (2013)

PMID: 24321279 DOI: 10.1016/j.bioorg.2013.11.003

Abstact

Crystal structure is presented of the binary complex between potassium phosphoramidate-phosphorylated recombinant C. elegans thymidylate synthase and dUMP. On each monomer a single phosphoserine residue (Ser127) was identified, instead of expected phosphohistidine. As (31)P NMR studies of both the phosphorylated protein and of potassium phosphoramidate potential to phosphorylate different amino acids point to histidine as the only possible site of the modification, thermodynamically favored intermolecular phosphotransfer from histidine to serine is suggested.

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Primary Citation of related structures