9IUX | pdb_00009iux

X-ray crystal structure of human hemoglobin subunit mu C49S/C104S mutant

PDB DOI: https://doi.org/10.2210/pdb9IUX/pdb

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

Deposited: 2024-07-22 Released: 2025-07-30
Deposition Author(s): Lin, Y.W.
Funding Organization(s): National Science Foundation (NSF, China)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.53 Å
R-Value Free:
0.201 (Depositor), 0.202 (DCC)
R-Value Work:
0.173 (Depositor), 0.173 (DCC)
R-Value Observed:
0.174 (Depositor)

Starting Model: in silico
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.0 of the entry. See complete history.

Literature

X-ray crystal structure of human hemoglobin subunit mu C49S/C104S mutant

Lin, Y.W.

To be published.

Macromolecule Content

Total Structure Weight: 16.23 kDa
Atom Count: 1,306
Modeled Residue Count: 137
Deposited Residue Count: 141
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin subunit mu	A	141	Homo sapiens	Mutation(s): 2 Gene Names: HBM, HBAP2
UniProt & NIH Common Fund Data Resources
Find proteins for Q6B0K9 (Homo sapiens) Explore Q6B0K9 Go to UniProtKB: Q6B0K9
PHAROS: Q6B0K9 GTEx: ENSG00000206177
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q6B0K9
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]

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MHO Query on MHO	A	L-PEPTIDE LINKING	C₅ H₁₁ N O₃ S		MET

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.53 Å
R-Value Free: 0.201 (Depositor), 0.202 (DCC)
R-Value Work: 0.173 (Depositor), 0.173 (DCC)
R-Value Observed: 0.174 (Depositor)

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.63	α = 90
b = 40.63	β = 90
c = 167.429	γ = 90

Software Package:

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

Structure Validation

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Ligand Structure Quality Assessment

Entry History & Funding Information

Deposition Data

Released Date: 2025-07-30

Deposition Author(s):

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

Revision History (Full details and data files)

Version 1.0: 2025-07-30
Type: Initial release

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.