Structure of PDB 2e52 Chain B

Receptor sequence

>2e52B (length=298) Species: 71421 (Haemophilus influenzae Rd KW20)

KSALEKLLSLIENLTNQEFKQATNSLISFIYKLNRNEVIELVRSIGILPE
AIKPSSTQEKLFSKAGDIVLAKAFQLLNLNSKPLEQRGNAGDVIALSKEF
NYGLVADAKSFRLSRTAKNQKDFKVKALSEWREDKDYAVLTAPFFQYPTT
KSQIFKQSLDENVLLFSWEHLAILLQLDLEETNIFSFEQLWNFPKKQSKK
TSVSDAENNFMRDFNKYFMDLFKIDKDTLNQLLQKEINFIEERSLIEKEY
WKKQINIIKNFTREEAIEALLKDINMSSKIETIDSFIKGIKSNDRLYL

3D structure

• PDB: 2e52 Structures of restriction endonuclease HindIII in complex with its cognate DNA and divalent cations
• Chain: B
• Resolution: 2.0 Å

Enzymatic activity

• Enzyme Commision number: 3.1.21.4: type II site-specific deoxyribonuclease.

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	dna	B	F20 S56 T58 K61 A118 N120 Q121 K122 P149 T150 T151 K152 S153 Q154	F19 S55 T57 K60 A117 N119 Q120 K121 P148 T149 T150 K151 S152 Q153
BS02	dna	B	L49 E60 S64 R88 G89 N90 D93 S111 F112 R113 R116 T117 A118 D123 K125 W132	L48 E59 S63 R87 G88 N89 D92 S110 F111 R112 R115 T116 A117 D122 K124 W131

Gene Ontology

Molecular Function

• GO:0004519 endonuclease activity
• GO:0009036 type II site-specific deoxyribonuclease activity

Biological Process

• GO:0009307 DNA restriction-modification system

External links

• PDB: RCSB:2e52, PDBe:2e52, PDBj:2e52
• PDBsum: 2e52
• PubMed: 19966419
• UniProt: P43870|T2D3_HAEIN Type II restriction enzyme HindIII (Gene Name=hindIIIR)