2XXK

SiaP complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	SIALIC ACID-BINDING PERIPLASMIC PROTEIN SIAP	polymer	312	35033.6	1	UniProt (P44542) Pfam (PF03480) In PDB	HAEMOPHILUS INFLUENZAE	SUBSTRATE BINDING PROTEIN, EXTRACYTOPLASMIC SOLUTE RECEPTOR PROTEIN SIAP, N-ACETYLNEURAMINIC-BINDING PROTEIN, NEU5AC-BINDING PROTEIN, SBP
2	A	N-acetyl-beta-neuraminic acid	non-polymer		309.3	1	Chemie (SLB)
3		water	water		18.0	412	Chemie (HOH)

Sequence modifications

A: 1 - 306 (UniProt: P44542)

PDB	External Database	Details
His 307	-	expression tag
His 308	-	expression tag
His 309	-	expression tag
His 310	-	expression tag
His 311	-	expression tag
His 312	-	expression tag
Asp 150	Asn 173	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	35033.6
Non-Polymers*	Number of molecules	1
	Total formula weight	309.3
All*	Total formula weight	35342.9

*Water molecules are not included.