Structure of PDB 2zfb Chain A

Receptor sequence

>2zfbA (length=141) Species: 9228 (Psittacula krameri)

VLSGTDKTNVKSIFSKIGGQADDYGAEALERMFVTYPQTKTYFPHFDVSP
GSAQVKAHGKKVAGGLSEAANHIDDIATSLSKLSDLHAQKLRVDPVNFKL
LGQCFLVVVAIHNPSALTPEAHASLDKFLCAVGLVLTAKYR

3D structure

• PDB: 2zfb Crystal structure of parrot hemoglobin (Psittacula krameri) at pH 7.5
• Chain: A
• Resolution: 3.0 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	A	Y42 F43 H45 H58 L83 L86 H87 L91 N97 F98 L101 L136	Y42 F43 H45 H58 L83 L86 H87 L91 N97 F98 L101 L136

Gene Ontology

Molecular Function

• GO:0004601 peroxidase activity
• GO:0005344 oxygen carrier activity
• GO:0005506 iron ion binding
• GO:0019825 oxygen binding
• GO:0020037 heme binding
• GO:0031720 haptoglobin 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
• GO:0072562 blood microparticle

External links

• PDB: RCSB:2zfb, PDBe:2zfb, PDBj:2zfb
• PDBsum: 2zfb
• UniProt: P19831|HBA_PSIKR Hemoglobin subunit alpha (Gene Name=HBA)