12QB | pdb_000012qb

Crystal structure of CM11.1 Fab in complex with an orthomarburgvirus GP2 peptide

PDB DOI: https://doi.org/10.2210/pdb12QB/pdb

Classification: IMMUNE SYSTEM
Organism(s): Macaca mulatta, Orthomarburgvirus marburgense
Expression System: Macaca mulatta
Mutation(s): No

Deposited: 2026-04-14 Released: 2026-06-24
Deposition Author(s): Niyongabo, A., Janus, B.M., Ofek, G.
Funding Organization(s): Other government

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free:
0.222 (Depositor), 0.226 (DCC)
R-Value Work:
0.176 (Depositor), 0.179 (DCC)
R-Value Observed:
0.180 (Depositor)

Starting Model: experimental
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This is version 1.0 of the entry. See complete history.

Literature

Crystal structure of CM11.1 Fab in complex with an orthomarburgvirus GP2 peptide

Niyongabo, A., Janus, B.M., Ofek, G.

To be published.

Macromolecule Content

Total Structure Weight: 48.92 kDa
Atom Count: 3,543
Modeled Residue Count: 447
Deposited Residue Count: 459
Unique protein chains: 3

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CM11.1 Fab heavy chain	A [auth H]	224	Macaca mulatta	Mutation(s): 0

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Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CM11.1 Fab light chain	B [auth L]	216	Macaca mulatta	Mutation(s): 0

Find similar proteins by: Sequence | 3D Structure

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
GP2 peptide	C [auth P]	19	Orthomarburgvirus marburgense	Mutation(s): 0
UniProt
Find proteins for Q1PDC7 (Lake Victoria marburgvirus (strain Ravn-87)) Explore Q1PDC7 Go to UniProtKB: Q1PDC7
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q1PDC7
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
MG (Subject of Investigation/LOI) Query on MG Download:Ideal Coordinates CCD File SDF format, chain E [auth L] SDF format, chain D [auth H] MOL2 format, chain E [auth L] MOL2 format, chain D [auth H] mmCIF format, chain E [auth L] mmCIF format, chain D [auth H]	D [auth H], E [auth L]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N		Interactions Focus chain D [auth H] Focus chain E [auth L] Interactions & Density Focus chain D [auth H] Focus chain E [auth L]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free: 0.222 (Depositor), 0.226 (DCC)
R-Value Work: 0.176 (Depositor), 0.179 (DCC)
R-Value Observed: 0.180 (Depositor)

Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.311	α = 90
b = 75.104	β = 90
c = 88.703	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-06-24

Deposition Author(s):

Funding Organization	Location	Grant Number
Other government	United States	--

Revision History (Full details and data files)

Version 1.0: 2026-06-24
Type: Initial release

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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.