Structure of PDB 1uwu Chain A

Receptor sequence

>1uwuA (length=483) Species: 2287 (Saccharolobus solfataricus)

MYSFPNSFRFGWSQAGFQSEMGTPGSEDPNTDWYKWVHDPENMAAGLVSG
DLPENGPGYWGNYKTFHDNAQKMGLKIARLNVEWSRIFPNPLPRPFDESK
QDVTEVEINENELKRLDEYANKDALNHYREIFKDLKSRGLYFILNMYHWP
LPLWLHDPIRVRRGDFTGPSGWLSTRTVYEFARFSAYIAWKFDDLVDEYS
TMNEPNVVGGLGYVGVKSGFPPGYLSFELSRRAMYNIIQAHARAYDGIKS
VSKKPVGIIYANSSFQPLTDKDMEAVEMAENDNRWWFFDAIIRGEITKIV
RDDLKGRLDWIGVNYYTRTVVKRTEKGYVSLGGYGHGCERNSVSLAGLPT
SDFGWEFFPEGLYDVLTKYWNRYHLYMYVTENGIADDADYQRPYYLVSHV
YQVHRAINSGADVRGYLHWSLADNYEWASGFSMRFGLLKVDYNTKRLYWR
PSALVYREIATNGAITDEIEHLNSVPPVKPLRH

3D structure

• PDB: 1uwu Structural studies of the beta-glycosidase from Sulfolobus solfataricus in complex with covalently and noncovalently bound inhibitors.
• Chain: A
• Resolution: 1.95 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): R79 H150 E206 V209 N320 Y322 E387
• Catalytic site (residue number reindexed from 1): R79 H148 E204 V207 N314 Y316 E381
• Enzyme Commision number: 3.2.1.23: beta-galactosidase.

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	GOX	A	Q18 H150 E206 Y322 E387 W425 E432 F441	Q18 H148 E204 Y316 E381 W419 E426 F435	MOAD: Ki=1.04uM PDBbind-CN: -logKd/Ki=5.98,Ki=1.04uM

Gene Ontology

Molecular Function

• GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds
• GO:0004565 beta-galactosidase activity
• GO:0008422 beta-glucosidase activity
• GO:0016798 hydrolase activity, acting on glycosyl bonds

Biological Process

• GO:0005975 carbohydrate metabolic process

External links

• PDB: RCSB:1uwu, PDBe:1uwu, PDBj:1uwu
• PDBsum: 1uwu
• PubMed: 15147194
• UniProt: P22498|BGAL_SACS2 Beta-galactosidase (Gene Name=lacS)