3AH1

HA1 subcomponent of botulinum type C progenitor toxin complexed with N-acetylneuramic acid

Replaces:  2EHI

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)	Main hemagglutinin component	polymer	288	34078.9	2	UniProt (P46084) Pfam (PF14200) UniProt (by SIFTS) (P0DPR0)	Clostridium botulinum	HA1 subcomponent of botulinum type C progenitor toxin, hemagglutinin component HA1, HA 33 kDa subunit, HA1
2	C, D, E (A, B)	N-acetyl-beta-neuraminic acid	non-polymer		309.3	3	Chemie (SLB)
3	F, G (A, B)	water	water		18.0	270	Chemie (HOH)

Sequence modifications

A, B: 1 - 286 (UniProt: P46084)

PDB	External Database	Details
Trp -1	-	expression tag
Ile 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	68157.7
Non-Polymers*	Number of molecules	3
	Total formula weight	927.8
All*	Total formula weight	69085.5

*Water molecules are not included.