1XCF

Crystal structure of P28L/Y173F tryptophan synthase alpha-subunits from Escherichia coli

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)	Tryptophan synthase alpha chain	polymer	268	28782.2	2	UniProt (P0A877) Pfam (PF00290)	Escherichia coli	Tryptophan synthase a-subunits
2	C, D (A, B)	water	water		18.0	231	Chemie (HOH)

Sequence modifications

A, B: 1 - 268 (UniProt: P0A877)

PDB	External Database	Details
Leu 28	Pro 28	engineered mutation
Ile 87	Leu 87	conflict
Glu 90	Gln 90	conflict
Arg 117	Gln 117	conflict
Phe 173	Tyr 173	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	57564.4
All*	Total formula weight	57564.4

*Water molecules are not included.