Structure of PDB 6ng5 Chain B

Receptor sequence

>6ng5B (length=410) Species: 9606 (Homo sapiens)

RFLKVKNWETEVVLTDTLHLKSTLETGCTEYICMGSIMHPSATKDQLFPL
AKEFIDQYYSSIKRFGSKAHMERLEEVNKEIDTTSTYQLKDTELIYGAKH
AWRNASRCVGRIQWSKLQVFDARDCTTAHGMFNYICNHVKYATNKGNLRS
AITIFPQRTDGKHDFRVWNSQLIRYAGYKQPDGSTLGDPANVQFTEICIQ
QGWKPPRGRFDVLPLLLQANGNDPELFQIPPELVLEVPIRHPKFEWFKDL
GLKWYGLPAVSNMLLEIGGLEFSACPFSGWYMGTEIGVRDYCDNSRYNIL
EEVAKKMNLDMRKTSSLWKDQALVEINIAVLYSFQSDKVTIVDHHSATES
FIKHMENEYRCRGGCPADWVWIVPPMSGSITPVFHQEMLNYRLTPSFEYQ
PDPWNTHVWK

3D structure

• PDB: 6ng5 Optimization of Blood-Brain Barrier Permeability with Potent and Selective Human Neuronal Nitric Oxide Synthase Inhibitors Having a 2-Aminopyridine Scaffold.
• Chain: B
• Resolution: 1.96 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): C420 R423 W592 E597
• Catalytic site (residue number reindexed from 1): C108 R111 W280 E285
• Enzyme Commision number: 1.14.13.39: nitric-oxide synthase (NADPH).

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	H4B	B	W681 F696 H697 Q698 E699	W369 F384 H385 Q386 E387
BS02	ZN	B	C331 C336	C28 C33
BS03	HEM	B	W414 C420 F589 W592 E597 W683 F709 Y711	W102 C108 F277 W280 E285 W371 F397 Y399
BS04	H4B	B	S339 R601 V682 W683	S36 R289 V370 W371
BS05	KMD	B	Q483 F589 W592 E597	Q171 F277 W280 E285	MOAD: Ki=52nM BindingDB: Ki=52nM

Gene Ontology

Molecular Function

• GO:0004517 nitric-oxide synthase activity

Biological Process

• GO:0006809 nitric oxide biosynthetic process

External links

• PDB: RCSB:6ng5, PDBe:6ng5, PDBj:6ng5
• PDBsum: 6ng5
• PubMed: 30802056
• UniProt: P29475|NOS1_HUMAN Nitric oxide synthase 1 (Gene Name=NOS1)