Structure of PDB 1mtr Chain B

Receptor sequence

>1mtrB (length=99) Species: 11676 (Human immunodeficiency virus 1)

PQITLWKRPLVTIRIGGQLKEALLDTGADDTVIEEMNLPGKWKPKMIGGI
GGFIKVRQYDQIPVEIAGHKAIGTVLVGPTPVNIIGRNLLTQIGATLNF

3D structure

• PDB: 1mtr Substrate-based cyclic peptidomimetics of Phe-Ile-Val that inhibit HIV-1 protease using a novel enzyme-binding mode.
• Chain: B
• Resolution: 1.75 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): D25 T26 G27
• Catalytic site (residue number reindexed from 1): D25 T26 G27
• Enzyme Commision number: 2.7.7.-
  2.7.7.49: RNA-directed DNA polymerase.
  2.7.7.7: DNA-directed DNA polymerase.
  3.1.-.-
  3.1.13.2: exoribonuclease H.
  3.1.26.13: retroviral ribonuclease H.
  3.4.23.16: HIV-1 retropepsin.

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	PI6	B	D25 G27 A28 D29 G48 I50 P81	D25 G27 A28 D29 G48 I50 P81	MOAD: Ki=4nM PDBbind-CN: -logKd/Ki=8.40,Ki=4nM

Gene Ontology

Molecular Function

• GO:0004190 aspartic-type endopeptidase activity

Biological Process

• GO:0006508 proteolysis

External links

• PDB: RCSB:1mtr, PDBe:1mtr, PDBj:1mtr
• PDBsum: 1mtr
• UniProt: P03369|POL_HV1A2 Gag-Pol polyprotein (Gene Name=gag-pol)