4WXB

Crystal Structure of Serine Hydroxymethyltransferase from Streptococcus thermophilus

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Serine hydroxymethyltransferase	polymer	428	46543.5	4	UniProt (Q5M0B4) Pfam (PF00464) In PDB	Streptococcus thermophilus	Serine methylase
2	A, B, C, D	CITRIC ACID	non-polymer		192.1	4	Chemie (CIT)
3	A, B, C, D	CACODYLATE ION	non-polymer		137.0	4	Chemie (CAC)
4	A, B, C, D	GLYCEROL	non-polymer		92.1	4	Chemie (GOL)
5	B, C, D	SODIUM ION	non-polymer		23.0	3	Chemie (NA)
6		water	water		18.0	578	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 416 (UniProt: Q5M0B4)

PDB	External Database	Details
Met -11	-	initiating methionine
Arg -10	-	expression tag
Gly -9	-	expression tag
Ser -8	-	expression tag
His -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	186174.2
Non-Polymers*	Number of molecules	15
	Total formula weight	1753.8
All*	Total formula weight	187928.0

*Water molecules are not included.