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2SQC

SQUALENE-HOPENE CYCLASE FROM ALICYCLOBACILLUS ACIDOCALDARIUS

Functional Information from GO Data
ChainGOidnamespacecontents
A0005811cellular_componentlipid droplet
A0005886cellular_componentplasma membrane
A0008610biological_processlipid biosynthetic process
A0016020cellular_componentmembrane
A0016104biological_processtriterpenoid biosynthetic process
A0016829molecular_functionlyase activity
A0016853molecular_functionisomerase activity
A0016866molecular_functionintramolecular transferase activity
A0051007molecular_functionsqualene-hopene cyclase activity
B0005811cellular_componentlipid droplet
B0005886cellular_componentplasma membrane
B0008610biological_processlipid biosynthetic process
B0016020cellular_componentmembrane
B0016104biological_processtriterpenoid biosynthetic process
B0016829molecular_functionlyase activity
B0016853molecular_functionisomerase activity
B0016866molecular_functionintramolecular transferase activity
B0051007molecular_functionsqualene-hopene cyclase activity
Functional Information from PDB Data
site_idAC1
Number of Residues13
DetailsBINDING SITE FOR RESIDUE C8E A 632
ChainResidue
APRO263
ATYR609
AHOH822
AHOH828
AHOH1355
APHE365
AASP374
ACYS376
ATYR420
APHE437
ATRP489
APHE601
APHE605

site_idAC2
Number of Residues11
DetailsBINDING SITE FOR RESIDUE C8E B 632
ChainResidue
AARG251
APRO348
AGLY349
ATYR371
BARG183
BARG238
BGLU241
BMET277
BHOH1216
BHOH1232
BHOH1243

site_idAC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE C8E A 633
ChainResidue
APRO149
AGLU151
APHE154

site_idAC4
Number of Residues13
DetailsBINDING SITE FOR RESIDUE C8E B 633
ChainResidue
BPRO263
BPHE365
BASP374
BCYS376
BASP377
BTYR420
BPHE437
BPHE601
BPHE605
BTYR609
BHOH832
BHOH880
BHOH1241

site_idAC5
Number of Residues10
DetailsBINDING SITE FOR RESIDUE C8E B 634
ChainResidue
AARG183
AARG238
AGLU241
AILE242
AHOH1184
BARG251
BPRO348
BGLY349
BTYR371
BHOH1214

site_idAC6
Number of Residues2
DetailsBINDING SITE FOR RESIDUE C8E B 635
ChainResidue
BGLU151
BPHE154

Functional Information from PROSITE/UniProt
site_idPS01074
Number of Residues15
DetailsTERPENE_SYNTHASES Terpene synthases signature. DGSWfGrWGVnYlYG
ChainResidueDetails
AASP482-GLY496

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsACT_SITE: Proton donor => ECO:0000305|PubMed:12747780, ECO:0000305|PubMed:9931258
ChainResidueDetails
AASP377
BASP377

Catalytic Information from CSA
site_idCSA1
Number of Residues15
Detailsa catalytic site defined by CSA, PubMed 9295270, 9931258
ChainResidueDetails
APHE605
ATYR495
ATRP489
ATRP169
ACYS376
AGLU93
APHE365
APHE601
AGLN262
AASP374
AASP377
AGLU45
AHIS451
AARG127
ATRP312

site_idCSA2
Number of Residues15
Detailsa catalytic site defined by CSA, PubMed 9295270, 9931258
ChainResidueDetails
BPHE605
BTYR495
BTRP489
BTRP169
BCYS376
BGLU93
BPHE365
BPHE601
BGLN262
BASP374
BASP377
BGLU45
BHIS451
BARG127
BTRP312

site_idMCSA1
Number of Residues17
DetailsM-CSA 254
ChainResidueDetails
AGLU45hydrogen bond acceptor, increase basicity, increase nucleophilicity, modifies pKa, proton acceptor
AASP377modifies pKa
ATYR420electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
AHIS451electrostatic stabiliser, hydrogen bond donor
ATRP489electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
ATYR495electrostatic stabiliser, hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor, proton relay
APHE601electrostatic stabiliser, van der waals interaction
APHE605electrostatic stabiliser, van der waals interaction
ATYR609electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
AGLU93modifies pKa
AARG127modifies pKa
ATRP169electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
AGLN262modifies pKa
ATRP312electrostatic stabiliser
APHE365electrostatic stabiliser, van der waals interaction
AASP374modifies pKa
ACYS376hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor

site_idMCSA2
Number of Residues17
DetailsM-CSA 254
ChainResidueDetails
BGLU45hydrogen bond acceptor, increase basicity, increase nucleophilicity, modifies pKa, proton acceptor
BASP377modifies pKa
BTYR420electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
BHIS451electrostatic stabiliser, hydrogen bond donor
BTRP489electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
BTYR495electrostatic stabiliser, hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor, proton relay
BPHE601electrostatic stabiliser, van der waals interaction
BPHE605electrostatic stabiliser, van der waals interaction
BTYR609electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
BGLU93modifies pKa
BARG127modifies pKa
BTRP169electrostatic stabiliser, polar/non-polar interaction, van der waals interaction
BGLN262modifies pKa
BTRP312electrostatic stabiliser
BPHE365electrostatic stabiliser, van der waals interaction
BASP374modifies pKa
BCYS376hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor

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PDB entries from 2025-06-11

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