Structure of PDB 4k3n Chain B

Receptor sequence

>4k3nB (length=518) Species: 36329 (Plasmodium falciparum 3D7)

SEVPQVVSLDPTSIPIEYNTPIHDIKVQVYDIKGGCNVEEGLTIFLVNNP
GKENGPVKISSKVNDKQVSEFLKDENMEKFNVKLGTSKHFYMFNDNKNSV
AVGYVGCGSVADLSEADMKRVVLSLVTMLHDNKLSKLTVVFEINVDKNLF
RFFLETLFYEYMTDERFKSTDKNVNMEYIKHLGVYINNADTYKEEVEKAR
VYYFGTYYASQLIAAPSNYCNPVSLSNAAVELAQKLNLEYKILGVKELEE
LKMGAYLSVGKGSMYPNKFIHLTYKSKGDVKKKIALVGKGITFDSGGYNL
KAAPGSMIDLMKFDMSGCAAVLGCAYCVGTLKPENVEIHFLSAVCENMVS
KNSYRPGDIITASNGKTIEVGNTDAEGRLTLADALVYAEKLGVDYIVDIA
TLTGAMLYSLGTSYAGVFGNNEELINKILQSSKTSNEPVWWLPIINEYRA
TLNSKYADINQISSSVKASSIVASLFLKEFVQNTAWAHIDIAGVSWNFKA
RKPKGFGVRLLTEFVLND

3D structure

• PDB: 4k3n Synthesis and Structure-Activity Relationships of Phosphonic Arginine Mimetics as Inhibitors of the M1 and M17 Aminopeptidases from Plasmodium falciparum.
• Chain: B
• Resolution: 2.0 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): K386 R463
• Catalytic site (residue number reindexed from 1): K301 R378
• Enzyme Commision number: 3.4.11.1: leucyl aminopeptidase.
  3.4.13.-

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	ZN	B	K374 D379 D399 E461	K289 D294 D314 E376
BS02	CO3	B	A460 G462 R463 L487	A375 G377 R378 L402
BS03	ZN	B	D379 D459 E461	D294 D374 E376
BS04	1OT	B	K374 D379 K386 M392 M396 D399 D459 E461 T486 L487 L492	K289 D294 K301 M307 M311 D314 D374 E376 T401 L402 L407	MOAD: Ki=0.011uM

Gene Ontology

Molecular Function

• GO:0030145 manganese ion binding
• GO:0046872 metal ion binding
• GO:0070006 metalloaminopeptidase activity

Biological Process

• GO:0006508 proteolysis
• GO:0019538 protein metabolic process

Cellular Component

• GO:0005737 cytoplasm

External links

• PDB: RCSB:4k3n, PDBe:4k3n, PDBj:4k3n
• PDBsum: 4k3n
• PubMed: 23713488
• UniProt: Q8IL11|AMPL_PLAF7 Leucine aminopeptidase (Gene Name=LAP)