Structure of PDB 3gqr Chain B

Receptor sequence

>3gqrB (length=145) Species: 9685 (Felis catus)

FLTAEEKGLVNGLWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSSA
DAIMSNAKVKAHGKKVLNSFSDGLKNIDDLKGAFAKLSELHCDKLHVDPE
NFRLLGNVLVCVLAHHFGHDFNPQVQAAFQKVVAGVANALAHKYH

3D structure

• PDB: 3gqr Crystallization of sheep (Ovis aries) and goat (Capra hircus) haemoglobins under unbuffered low-salt conditions
• Chain: B
• Resolution: 2.4 Å

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	HEM	B	T38 F41 F42 H63 K66 V67 L88 H92 L96 N102 F103 L106 L141	T37 F40 F41 H62 K65 V66 L87 H91 L95 N101 F102 L105 L140

Gene Ontology

Molecular Function

• GO:0004601 peroxidase activity
• GO:0005344 oxygen carrier activity
• GO:0019825 oxygen binding
• GO:0020037 heme binding
• GO:0031720 haptoglobin binding
• GO:0031721 hemoglobin alpha binding
• GO:0043177 organic acid binding
• GO:0046872 metal ion binding

Biological Process

• GO:0015671 oxygen transport
• GO:0042744 hydrogen peroxide catabolic process
• GO:0098869 cellular oxidant detoxification

Cellular Component

• GO:0005833 hemoglobin complex
• GO:0031838 haptoglobin-hemoglobin complex

External links

• PDB: RCSB:3gqr, PDBe:3gqr, PDBj:3gqr
• PDBsum: 3gqr
• UniProt: P07412|HBB_FELCA Hemoglobin subunit beta-A/B (Gene Name=HBB)