Structure of PDB 5xti Chain x

Receptor sequence

>5xtix (length=514) Species: 9913 (Bos taurus) [Search protein sequence]

MFINRWLFSTNHKDIGTLYLLFGAWAGMVGTALSLLIRAELGQPGTLLGD
DQIYNVVVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNM
SFWLLPPSFLLLLASSMVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSL
HLAGVSSILGAINFITTIINMKPPAMSQYQTPLFVWSVMITAVLLLLSLP
VLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPG
FGMISHIVTYYSGKKEPFGYMGMVWAMMSIGFLGFIVWAHHMFTVGMDVD
TRAYFTSATMIIAIPTGVKVFSWLATLHGGNIKWSPAMMWALGFIFLFTV
GGLTGIVLANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIMGGFVHWFPLF
SGYTLNDTWAKIHFAIMFVGVNMTFFPQHFLGLSGMPRRYSDYPDAYTMW
NTISSMGSFISLTAVMLMVFIIWEAFASKREVLTVDLTTTNLEWLNGCPP
PYHTFEEPTYVNLK

3D structure

PDB

5xti Architecture of Human Mitochondrial Respiratory Megacomplex I2III2IV2.

Chain

Resolution

17.4 Å

3D
structure

Catalytic site residues are labeled in the structure
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Enzymatic activity

Catalytic site (original residue number in PDB)	H61 D91 W126 S156 S157 H240 E242 Y244 S255 H290 H291 T316 K319 R438 R439
Catalytic site (residue number reindexed from 1)	H61 D91 W126 S156 S157 H240 E242 Y244 S255 H290 H291 T316 K319 R438 R439
Enzyme Commision number	7.1.1.9: cytochrome-c oxidase.

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)
BS01	CU	x	H240 H290 H291	H240 H290 H291
BS02	MG	x	H368 D369	H368 D369
BS03	HEA	x	G27 S34 R38 V58 H61 A62 M65 G125 W126 Y371 F377 H378 L381 S382 V386 F425 R438 R439	G27 S34 R38 V58 H61 A62 M65 G125 W126 Y371 F377 H378 L381 S382 V386 F425 R438 R439
BS04	HEA	x	W236 V243 Y244 H290 H291 T316 G317 G352 G355 I356 L358 D364 H368 H376 F377 V380 R438	W236 V243 Y244 H290 H291 T316 G317 G352 G355 I356 L358 D364 H368 H376 F377 V380 R438

Gene Ontology

	Molecular Function
GO:0004129	cytochrome-c oxidase activity
GO:0020037	heme binding
GO:0046872	metal ion binding

	Biological Process
GO:0006119	oxidative phosphorylation
GO:0006123	mitochondrial electron transport, cytochrome c to oxygen
GO:0009060	aerobic respiration
GO:0015990	electron transport coupled proton transport

	Cellular Component
GO:0005739	mitochondrion
GO:0005743	mitochondrial inner membrane
GO:0016020	membrane
GO:0045277	respiratory chain complex IV

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Molecular Function

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Biological Process

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Cellular Component

External links

PDB	RCSB:5xti, PDBe:5xti, PDBj:5xti
PDBsum	5xti
PubMed	28844695
UniProt	P00396\|COX1_BOVIN Cytochrome c oxidase subunit 1 (Gene Name=MT-CO1)

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