1E2Q

Human thymidylate kinase complexed with TP5A and a magnesium-ion

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	THYMIDYLATE KINASE	polymer	215	24052.5	1	UniProt (P23919) Pfam (PF02223) In PDB	HOMO SAPIENS (HUMAN)	TMPK
2	A	THYMIDINE-5'-PHOSPHATE	non-polymer		322.2	1	Chemie (TMP)
3	A	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	1	Chemie (ATP)
4	A	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
5		water	water		18.0	244	Chemie (HOH)

Sequence modifications

A: -2 - 0 (PDB: 1E2Q)
A: 1 - 212 (UniProt: P23919)

PDB	External Database	Details
Ala 200	Arg 200	engineered mutation
Ser 183	Arg 183	conflict
Ile 184	Leu 184	conflict
Asp 190	Glu 190	conflict
Ile 191	Leu 191	conflict

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	24052.5
Non-Polymers*	Number of molecules	4
	Total formula weight	878.0
All*	Total formula weight	24930.5

*Water molecules are not included.