PPIRE18410

Target Protein Information
Protein_Name Calcium-activated potassium channel subunit alpha-1
Protein_Sequence MANGGGGGGGGSSGSSGGGGGGGGGETALRMSSNIHANHLSLDASSSSSSSSSSSSSSSSSVHEPKMDALIIPVTMEVPCDSRGQRMWWAFLASSMVTFFGGLFIILLWRTLKYLWTVCCHCGGKTKEAQKINNGSSQADGTLKPVDEKEEVVAAEVGWMTSVKDWAGVMISAQTLTGRVLVVLVFALSIGALVIYFIDSSNPIESCQNFYKDFTLQIDMAFNVFFLLYFGLRFIAANDKLWFWLEVNSVVDFFTVPPVFVSVYLNRSWLGLRFLRALRLIQFSEILQFLNILKTSNSIKLVNLLSIFISTWLTAAGFIHLVENSGDPWENFQNNQALTYWECVYLLMVTMSTVGYGDVYAKTTLGRLFMVFFILGGLAMFASYVPEIIELIGNRKKYGGSYSAVSGRKHIVVCGHITLESVSNFLKDFLHKDRDDVNVEIVFLHNISPNLELEALFKRHFTQVEFYQGSVLNPHDLARVKIESADACLILANKYCADPDAEDASNIMRVISIKNYHPKIRIITQMLQYHNKAHLLNIPSWNWKEGDDAICLAELKLGFIAQSCLAQGLSTMLANLFSMRSFIKIEEDTWQKYYLEGVSNEMYTEYLSSAFVGLSFPTVCELCFVKLKLLMIAIEYKSANRESRSRKRILINPGNHLKIQEGTLGFFIASDAKEVKRAFFYCKACHDDVTDPKRIKKCGCRRLEDEQPPTLSPKKKQRNGGMRNSPNTSPKLMRHDPLLIPGNDQIDNMDSNVKKYDSTGMFHWCAPKEIEKVILTRSEAAMTVLSGHVVVCIFGDVSSALIGLRNLVMPLRASNFHYHELKHIVFVGSIEYLKREWETLHNFPKVSILPGTPLSRADLRAVNINLCDMCVILSANQNNIDDTSLQDKECILASLNIKSMQFDDSIGVLQANSQGFTPPGMDRSSPDNSPVHGMLRQPSITTGVNIPIITELAKPGKLPLVSVNQEKNSGTHILMITELVNDTNVQFLDQDDDDDPDTELYLTQPFACGTAFAVSVLDSLMSATYFNDNILTLIRTLVTGGATPELEALIAEENALRGGYSTPQTLANRDRCRVAQLALLDGPFADLGDGGCYGDLFCKALKTYNMLCFGIYRLRDAHLSTPSQCTKRYVITNPPYEFELVPTDLIFCLMQFDHNAGQSRASLSHSSHSSQSSSKKSSSVHSIPSTANRPNRPKSRESRDKQKKEMVYR
Organism_Source Rattus norvegicus
Functional_Classification Ca2+ activated K channels
Cellular_Localization Plasma membrane
Gene_Names Kcnma1
UniProt_ID Q62976
Protein-Protein Interaction Networks
Peptide Basic Information
Peptide_Name BPTI
Peptide_Sequence RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGTCYPGVPETQVVIP
Peptide_Length 51
Peptide_SMILES CC[C@H](C)[C@H](NC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@H](C)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CS)NC(=O)[C@@H]1CCCN1C(=O)CNC(=O)[C@@H](NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H]1CCCN1C(=O)[C@@H]1CCCN1C(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CS)NC(=O)[C@H](Cc1ccccc1)NC(=O)[C@H](CC(=O)O)NC(=O)[C@@H]1CCCN1C(=O)[C@@H](N)CCCNC(=N)N)[C@@H](C)O)C(=O)N[C@H](C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C)C(=O)NCC(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CS)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@H](C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@H](C(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)NCC(=O)NCC(=O)N[C@H](C(=O)N[C@@H](CS)C(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N1CCC[C@H]1C(=O)NCC(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@H](C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)O)[C@@H](C)CC)C(C)C)C(C)C)[C@@H](C)O)C(C)C)[C@@H](C)O)C(C)C)[C@@H](C)O)[C@@H](C)CC
Chemical_Modification None
Cyclization_Method Side chain cyclization; C5<-->C55; disulfide bond; C14<-->C38; disulfide bond; C30<-->C51; disulfide bond
Linear/Cyclic Cyclic
N-terminal_Modification Free
C-terminal_Modification Free
Amino_Acid_Distribution
Peptide Physicochemical
Molecular_Weight 5701.64
Aliphatic_Index 66.86275
Aromaticity 0.15686
Average_Rotatable_Bonds 3.29412
Charge_at_pH_7 1.74923
Isoelectric_Point 8.31185
Number_of_Hydrogen_Bond_Acceptors 76
Number_of_Hydrogen_Bond_Donors 75
Topological_Polar_Surface_Area 2117.77000
X_logP_energy -16.37659
Interaction Information
Affinity KD=1.49 uM
Affinity_Assay single-channel recording
PDB_ID None
Type Inhibitor
Structure
Reference Information
Document_Type Research Articles
Title Simultaneous Binding of Basic Peptides at Intracellular Sites on a Large Conductance Ca2+-activated K Channel: Equilibrium and Kinetic Basis of Negatively Coupled Ligand Interactions
Release_Year 1999
PMID 9925826
DOI 10.1085/jgp.113.2.295