9LMB | pdb_00009lmb

crystal structure of the F46H/L49D myoglobin mutant

PDB DOI: https://doi.org/10.2210/pdb9LMB/pdb

Classification: METAL BINDING PROTEIN
Organism(s): Physeter macrocephalus
Expression System: Escherichia coli BL21(DE3)
Mutation(s): Yes

Deposited: 2025-01-18 Released: 2026-01-21
Deposition Author(s): Lin, Y.W.
Funding Organization(s): National Science Foundation (NSF, China)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.64 Å
R-Value Free:
0.204 (Depositor), 0.204 (DCC)
R-Value Work:
0.174 (Depositor), 0.173 (DCC)
R-Value Observed:
0.177 (Depositor)

Starting Model: experimental
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Ligand Structure Quality Assessment

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Literature

crystal structure of the F46H/L49D myoglobin mutant

Lin, Y.W.

To be published.

Macromolecule Content

Total Structure Weight: 17.98 kDa
Atom Count: 1,432
Modeled Residue Count: 154
Deposited Residue Count: 154
Unique protein chains: 1

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Myoglobin	A	154	Physeter macrocephalus	Mutation(s): 2 Gene Names: MB EC: 1.7 (PDB Primary Data), 1.11.1 (PDB Primary Data)
UniProt
Find proteins for P02185 (Physeter macrocephalus) Explore P02185 Go to UniProtKB: P02185
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P02185
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
HEM Query on HEM Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	PROTOPORPHYRIN IX CONTAINING FE C₃₄ H₃₂ Fe N₄ O₄ KABFMIBPWCXCRK-RGGAHWMASA-L		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.64 Å
R-Value Free: 0.204 (Depositor), 0.204 (DCC)
R-Value Work: 0.174 (Depositor), 0.173 (DCC)
R-Value Observed: 0.177 (Depositor)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 31.885	α = 90
b = 52.9	β = 90
c = 82.964	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-01-21

Deposition Author(s):

Funding Organization	Location	Grant Number
National Science Foundation (NSF, China)	China	--

Revision History (Full details and data files)

Version 1.0: 2026-01-21
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.