Structure of PDB 5hk4 Chain B

Receptor sequence

>5hk4B (length=455) Species: 1076 (Rhodopseudomonas palustris)

MDQSNRYANLNLKESELIAGGRHVLCAYIMKPKAGFGNFIQTAAHFVAES
STGTNVEVSTTDDFTRGVDALVYEVDEANSLMKIAYPIELFDRNVIDGRA
MIASFLTLTIGNNQGMGDVEYAKMYDFYVPPAYLKLFDGPSTTIKDLWRV
LGRPVINGGFIVGTIIKPKLGLRPQPFANACYDFWLGGDFIKNDEPQGNQ
VFAPFKDTVRAVADAMRRAQDKTGEAKLFSFNITADDHYEMLARGEFILE
TFADNADHIAFLVDGYVAGPAAVTTARRAFPKQYLHYHRAGHGAVTSPQS
KRGYTAFVLSKMARLQGASGIHTGTMGFGKAEGEAADRAIAYMITEDAAD
GPYFHQEWLGMNPTTPIISGGMNALRMPGFFDNLGHSNLIMTAGGGAFGH
VDGGAAGAKSLRQAEQCWKQGADPVEFAKDHREFARAFESFPQDADKLYP
NWRAK

3D structure

• PDB: 5hk4 Structure function studies of R. palustris RubisCO.
• Chain: B
• Resolution: 2.15 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): L25 K167 K192 N193 D194 E195 H288 H322 K330
• Catalytic site (residue number reindexed from 1): L25 K167 K192 N193 D194 E195 H288 H322 K330
• Enzyme Commision number: 4.1.1.39: ribulose-bisphosphate carboxylase.

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	CAP	B	T54 N112	T54 N112
BS02	CAP	B	I165 K167 K192 D194 E195 H288 R289 H322 K330 S369 G370 G371 G394 G395	I165 K167 K192 D194 E195 H288 R289 H322 K330 S369 G370 G371 G394 G395
BS03	MG	B	K192 D194 E195	K192 D194 E195

Gene Ontology

Molecular Function

• GO:0000287 magnesium ion binding
• GO:0004497 monooxygenase activity
• GO:0016829 lyase activity
• GO:0016984 ribulose-bisphosphate carboxylase activity
• GO:0046872 metal ion binding

Biological Process

• GO:0015977 carbon fixation
• GO:0015979 photosynthesis
• GO:0019253 reductive pentose-phosphate cycle

External links

• PDB: RCSB:5hk4, PDBe:5hk4, PDBj:5hk4
• PDBsum: 5hk4
• UniProt: Q6N0W9|RBL2_RHOPA Ribulose bisphosphate carboxylase (Gene Name=cbbM)