1AY0

IDENTIFICATION OF CATALYTICALLY IMPORTANT RESIDUES IN YEAST TRANSKETOLASE

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	TRANSKETOLASE	polymer	680	73820.3	2	UniProt (P23254) Pfam (PF00456) Pfam (PF02779) Pfam (PF02780)	Saccharomyces cerevisiae (baker's yeast)
2	C, E (A, B)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	D, F (A, B)	THIAMINE DIPHOSPHATE	non-polymer		425.3	2	Chemie (TPP)

Sequence modifications

A, B: 2 - 680 (UniProt: P23254)

PDB	External Database	Details
Ala 263	His 262	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	147640.6
Non-Polymers*	Number of molecules	4
	Total formula weight	930.8
All*	Total formula weight	148571.4

*Water molecules are not included.