1UX9: Cytoglobin

Mapping protein matrix cavities in human cytoglobin through Xe atom binding: a crystallographic investigation. Determined by X-ray diffraction at 2.4 Å resolution. Released 1 Jun 2004.

Method: X-ray diffraction
Resolution: 2.4 Å
Organism: HOMO SAPIENS
Chains: 2
Atoms: 2,639
Mol. weight: 45.38 kDa
Ligands: XE, FC6, HEM
Released: 1 Jun 2004

Explore 1UX9 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1UX9 contains 19 α-helices and 0 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 10 helices, 0 β-strands

Element	Residues	Length
α-helix	21-35	15
α-helix	38-52	15
α-helix	54-59	6
α-helix	69-72	4
α-helix	76-94	19
α-helix	99-111	13
α-helix	112-116	5
α-helix	122-138	17
α-helix	140-142	3
α-helix	145-169	25

Chain B: 9 helices, 0 β-strands

Element	Residues	Length
α-helix	21-35	15
α-helix	38-52	15
α-helix	54-59	6
α-helix	69-73	5
α-helix	76-94	19
α-helix	99-112	14
α-helix	113-117	5
α-helix	122-138	17
α-helix	145-168	24

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Cytoglobin	A, B	protein	190	HOMO SAPIENS	Q8WWM9 (AlphaFold model)

Sequence of entity 1 (A, B), FASTA

>1UX9_1 CYTOGLOBIN (chains A, B)
MEKVPGEMEIERRERSEELSEAERKAVQAMWARLYANSEDVGVAILVRFFVNFPSAKQYF
SQFKHMEDPLEMERSPQLRKHASRVMGALNTVVENLHDPDKVSSVLALVGKAHALKHKVE
PVYFKILSGVILEVVAEEFASDFPPETQRAWAKLRGLIYSHVTAAYKEVGWVQQVPNATT
PPATLPSSGP

Ligands and cofactors

ID	Name	Formula	Copies
XE	Xenon	Xe	7
FC6	HEXACYANOFERRATE(3-)	C6 Fe N6	2
HEM	Protoporphyrin IX containing FE	C34 H32 Fe N4 O4	2

Primary citation

Mapping Protein Matrix Cavities in Human Cytoglobin Through Xe Atom Binding. De Sanctis, D., Dewilde, S., Pesce, A. et al. Biochem Biophys Res Commun (2004) 316:1217. DOI 10.1016/J.BBRC.2004.03.007 · PubMed

Other PDB entries of the same protein (UniProt Q8WWM9 (AlphaFold model), which also has an AlphaFold model), best resolution first:

2DC3 1.68 Å, Crystal structure of human cytoglobin at 1.68 angstroms resolution
1URV 2.0 Å, Crystal structure of cytoglobin: the fourth globin type discovered in man displays heme…
1UT0 2.1 Å, Crystal structure of cytoglobin: the fourth globin type discovered in man displays heme…
1URY 2.4 Å, cytoglobin cavities
1V5H 2.4 Å, Crystal Structure of Human Cytoglobin (Ferric Form)
1UMO 2.59 Å, The crystal structure of cytoglobin: the fourth globin type discovered in man
3AG0 2.6 Å, Crystal structure of carbonmonoxy human cytoglobin
4B3W 2.8 Å, Crystal structure of human cytoglobin H(E7)Q mutant

Browse structure collections

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