5OCQ

Crystal structure of the complex of the kappa-carrageenase from Pseudoalteromonas carrageenovora with an oligotetrasaccharide of kappa-carrageenan

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)	Kappa-carrageenase	polymer	285	32968.5	2	UniProt (P43478) Pfam (PF00722)	Pseudoalteromonas carrageenovora
2	C, D (C, D)	3,6-anhydro-alpha-D-galactopyranose-(1-3)-4-O-sulfo-beta-D-galactopyranose-(1-4)-3,6-anhydro-alpha-D-galactopyranose-(1-3)-4-O-sulfo-beta-D-galactopyranose	branched		790.7	2
3	E, F (A, B)	CITRIC ACID	non-polymer		192.1	2	Chemie (CIT)
4	G, H (A, B)	water	water		18.0	585	Chemie (HOH)

Sequence modifications

A, B: 26 - 301 (UniProt: P43478)

PDB	External Database	Details
Met 25	-	initiating methionine
Asp 168	Glu 168	engineered mutation
Leu 302	-	expression tag
Glu 303	-	expression tag
His 304	-	expression tag
His 305	-	expression tag
His 306	-	expression tag
His 307	-	expression tag
His 308	-	expression tag
His 309	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	65937.1
Branched	Number of molecules	2
	Total formula weight	1581.3
Non-Polymers*	Number of molecules	2
	Total formula weight	384.2
All*	Total formula weight	67902.7

*Water molecules are not included.