7VLJ

Crystal structure of Entamoeba histolytica serine protease inhibitor, Histopin, in the cleaved conformation

PDB DOI: https://doi.org/10.2210/pdb7VLJ/pdb
Entry: 7VLJ supersedes: 6LY2

Classification: HYDROLASE
Organism(s): Entamoeba histolytica
Expression System: Escherichia coli BL21
Mutation(s): No

Deposited: 2021-10-03 Released: 2021-11-17
Deposition Author(s): Ali, M.F., Devi, S., Gourinath, S.
Funding Organization(s): Science and Engineering Research Board (SERB)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.83 Å
R-Value Free: 0.203
R-Value Work: 0.157
R-Value Observed: 0.159

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Crystal structure of Entamoeba histolytica serine protease inhibitor, Histopin, in the cleaved conformation

Ali, M.F., Devi, S., Gourinath, S.

To be published.

Macromolecule Content

Total Structure Weight: 44.93 kDa
Atom Count: 3,217
Modelled Residue Count: 364
Deposited Residue Count: 379
Unique protein chains: 2

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine protease inhibitor, putative	A	330	Entamoeba histolytica	Mutation(s): 0 Gene Names: EHI_119330
UniProt
Find proteins for C4M4Y1 (Entamoeba histolytica (strain ATCC 30459 / HM-1:IMSS / ABRM)) Explore C4M4Y1 Go to UniProtKB: C4M4Y1
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	C4M4Y1
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine protease inhibitor, putative	B	49	Entamoeba histolytica	Mutation(s): 0 Gene Names: EHI_119330
UniProt
Find proteins for C4M4Y1 (Entamoeba histolytica (strain ATCC 30459 / HM-1:IMSS / ABRM)) Explore C4M4Y1 Go to UniProtKB: C4M4Y1
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	C4M4Y1
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PEG Query on PEG Download Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A]	I [auth A], J [auth A], K [auth A]	DI(HYDROXYETHYL)ETHER C₄ H₁₀ O₃ MTHSVFCYNBDYFN-UHFFFAOYSA-N		Interactions Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Interactions & Density Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A]
GOL Query on GOL Download Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain P [auth B] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain P [auth B]	D [auth A] E [auth A] F [auth A] G [auth A] H [auth A] D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], P [auth B]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain P [auth B] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain P [auth B]
SCN Query on SCN Download Ideal Coordinates CCD File SDF format, chain L [auth A] SDF format, chain M [auth A] SDF format, chain N [auth A] SDF format, chain O [auth A] SDF format, chain Q [auth B] MOL2 format, chain L [auth A] MOL2 format, chain M [auth A] MOL2 format, chain N [auth A] MOL2 format, chain O [auth A] MOL2 format, chain Q [auth B]	L [auth A], M [auth A], N [auth A], O [auth A], Q [auth B]	THIOCYANATE ION C N S ZMZDMBWJUHKJPS-UHFFFAOYSA-M		Interactions Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain Q [auth B] Interactions & Density Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain Q [auth B]
K Query on K Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A]	C [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]