3BX7 | pdb_00003bx7

Engineered Human Lipocalin 2 (LCN2) in Complex with the Extracellular Domain of Human CTLA-4

PDB DOI: https://doi.org/10.2210/pdb3BX7/pdb

Classification: DE NOVO PROTEIN, PROTEIN BINDING
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2008-01-11 Released: 2009-01-20
Deposition Author(s): Schonfeld, D.L., Chatwell, L., Skerra, A.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free:
0.226 (Depositor), 0.235 (DCC)
R-Value Work:
0.209 (Depositor), 0.219 (DCC)

Starting Models: experimental
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wwPDB Validation 3D Report Full Report

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This is version 1.3 of the entry. See complete history.

Literature

High affinity molecular recognition and functional blockade of CTLA-4 by an engineered human lipocalin

Schonfeld, D.L., Matschiner, G., Chatwell, L., Trentmann, S., Schlehuber, S., Hohlbaum, A., Skerra, A.

To be published.

Macromolecule Content

Total Structure Weight: 33.5 kDa
Atom Count: 2,473
Modeled Residue Count: 293
Deposited Residue Count: 302
Unique protein chains: 2

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYTOTOXIC T-LYMPHOCYTE-ASSOCIATED ANTIGEN 4	A [auth C]	124	Homo sapiens	Mutation(s): 0 Gene Names: CTLA4, CD152
UniProt & NIH Common Fund Data Resources
Find proteins for P16410 (Homo sapiens) Explore P16410 Go to UniProtKB: P16410
PHAROS: P16410 GTEx: ENSG00000163599
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P16410
Sequence Annotations Expand
Reference Sequence

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Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ENGINEERED HUMAN LIPOCALIN 2	B [auth A]	178	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free: 0.226 (Depositor), 0.235 (DCC)
R-Value Work: 0.209 (Depositor), 0.219 (DCC)

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.706	α = 90
b = 120.706	β = 90
c = 82.957	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

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Entry History

Deposition Data

Released Date: 2009-01-20

Deposition Author(s):

Schonfeld, D.L.

Revision History (Full details and data files)

Version 1.0: 2009-01-20
Type: Initial release
Version 1.1: 2011-07-13
Changes: Version format compliance
Version 1.2: 2023-08-30
Changes: Data collection, Database references, Refinement description
Version 1.3: 2024-10-09
Changes: Structure summary

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.