3LBC

D-sialic acid aldolase complexed with L-arabinose

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	N-acetylneuraminate lyase	polymer	319	35291.3	4	UniProt (P0A6L4) Pfam (PF00701) In PDB	Escherichia coli	N-acetylneuraminic acid aldolase, N-acetylneuraminate pyruvate-lyase, Sialic acid lyase, Sialate lyase, Sialic acid aldolase, NALase
2	A, B, C, D	L-arabinose	non-polymer		150.1	4	Chemie (LAI)
3	A, B, C, D	SULFATE ION	non-polymer		96.1	8	Chemie (SO4)
4		water	water		18.0	1250	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 297 (UniProt: P0A6L4)

PDB	External Database	Details
Met -21	-	expression tag
Gly -20	-	expression tag
His -19	-	expression tag
His -18	-	expression tag
His -17	-	expression tag
His -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
His -6	-	expression tag
Ile -5	-	expression tag
Glu -4	-	expression tag
Gly -3	-	expression tag
Arg -2	-	expression tag
His -1	-	expression tag
Met 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	141165.2
Non-Polymers*	Number of molecules	12
	Total formula weight	1369.0
All*	Total formula weight	142534.2

*Water molecules are not included.