The domain within your query sequence starts at position 9 and ends at position 104; the E-value for the DUF3767 domain shown below is 5.4e-15.

ETEKKPFKLLGILDVENTPCARESILYGSLGSIVTGLGHFLVTSRIRRSCDVGVGGFILV
TLGCWFHCRYNFAKQRIQERIAREGIKNKILYESTH

DUF3767

DUF3767
PFAM accession number:PF12597
Interpro abstract (IPR022533):

Complex IV (CIV) is a copper-heme oxidase that couples electron transfer from cytochrome c to oxygen with proton extrusion across the inner membrane to contribute to the proton gradient required for ATP generation. This entry includes fungal mitochondrial complex IV assembly factor Cox20 [ (PUBMED:10671482) ] and its homologues (also known as (FAM36A) in metazoa [ (PUBMED:23125284) ].

Human CIV is formed by three catalytic core subunits (COX1/2/3). COX20 has been found to form a complex with SCO1, SCO2, and newly synthetized COX2. It may act as a chaperone in the early steps of COX2 maturation [ (PUBMED:24403053) ].

GO process:mitochondrial cytochrome c oxidase assembly (GO:0033617)
GO component:mitochondrial inner membrane (GO:0005743)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry DUF3767