Structure of PDB 5lf3 Chain K

Receptor sequence
>5lf3K (length=200) Species: 9606 (Homo sapiens) [Search protein sequence]
TTTLAFKFRHGVIVAADSRATAGAYIASQTVKKVIEINPYLLGTMAGGAA
DCSFWERLLARQCRIYELRNKERISVAAASKLLANMVYQYKGMGLSMGTM
ICGWDKRGPGLYYVDSEGNRISGATFSVGSGSVYAYGVMDRGYSYDLEVE
QAYDLARRAIYQATYRDAYSGGAVNLYHVREDGWIRVSSDNVADLHEKYS
3D structure
PDB5lf3 The inhibition mechanism of human 20S proteasomes enables next-generation inhibitor design.
ChainK
Resolution2.1 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) T1 D17 R19 K33 G47 S130 D167 S170
Catalytic site (residue number reindexed from 1) T1 D17 R19 K33 G47 S130 D167 S170
Enzyme Commision number 3.4.25.1: proteasome endopeptidase complex.
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 MG K T164 D167 A168 S170 T164 D167 A168 S170
BS02 BO2 K T1 A20 T21 G47 A49 T1 A20 T21 G47 A49 BindingDB: IC50=11nM,Ki=9.8nM
Gene Ontology
Molecular Function
GO:0004298 threonine-type endopeptidase activity
Biological Process
GO:0051603 proteolysis involved in protein catabolic process
Cellular Component
GO:0005839 proteasome core complex

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Cellular Component
External links
PDB RCSB:5lf3, PDBe:5lf3, PDBj:5lf3
PDBsum5lf3
PubMed27493187
UniProtP28074|PSB5_HUMAN Proteasome subunit beta type-5 (Gene Name=PSMB5)

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