PAS domain

Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary
PDB	1byw, 1d06, 1d7e, 1dp6, 1dp8, 1dp9, 1drm, 1ew0, 1f98, 1f9i, 1gsv, 1gsw, 1gsx, 1kou, 1ll8, 1lsv, 1lsw, 1lsx, 1lt0, 1mzu, 1nwz, 1odv, 1ot6, 1ot9, 1ota, 1otb, 1otd, 1ote, 1oti, 1s1y, 1s1z, 1s4r, 1s4s, 1s66, 1s67, 1t18, 1t19, 1t1a, 1t1b, 1t1c, 1ts0, 1ts6, 1ts7, 1ts8, 1ugu, 1uwn, 1uwp, 1v9y, 1v9z, 1vb6, 1wa9, 1xfn, 1xfq, 1xj2, 1xj3, 1xj4, 1xj6, 1y28, 2d01, 2d02, 2phy, 2pyp, 2pyr, 3phy, 3pyp

PAS fold
PAS fold
	Crystallographic structure of the PAS domain of the bacterial oxygen sensor protein fixL. The protein is depicted as a rainbow colored cartoon (N-terminus = blue, C-terminus = red) while the heme ligand is shown as sticks (carbon = white, nitrogen = blue, oxygen = red, iron = orange).
Identifiers
Symbol	PAS
Pfam	PF00989
InterPro	IPR013767
SMART	PAS
PROSITE	PDOC50112
SCOP2	2phy / SCOPe / SUPFAM
CDD	cd00130
Pfam
Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary
PDB	1byw, 1d06, 1d7e, 1dp6, 1dp8, 1dp9, 1drm, 1ew0, 1f98, 1f9i, 1gsv, 1gsw, 1gsx, 1kou, 1ll8, 1lsv, 1lsw, 1lsx, 1lt0, 1mzu, 1nwz, 1odv, 1ot6, 1ot9, 1ota, 1otb, 1otd, 1ote, 1oti, 1s1y, 1s1z, 1s4r, 1s4s, 1s66, 1s67, 1t18, 1t19, 1t1a, 1t1b, 1t1c, 1ts0, 1ts6, 1ts7, 1ts8, 1ugu, 1uwn, 1uwp, 1v9y, 1v9z, 1vb6, 1wa9, 1xfn, 1xfq, 1xj2, 1xj3, 1xj4, 1xj6, 1y28, 2d01, 2d02, 2phy, 2pyp, 2pyr, 3phy, 3pyp

A Per-Arnt-Sim (PAS) domain is a protein domain found in all kingdoms of life. Generally, the PAS domain acts as a molecular sensor, whereby small molecules and other proteins associate via binding of the PAS domain. Due to this sensing capability, the PAS domain has been shown as the key structural motif involved in protein-protein interactions of the circadian clock, and it is also a common motif found in signaling proteins, where it functions as a signaling sensor.

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