8Z5T: PDB entry 8Z5T

human phosphorylase kinase - phosphorylation and Ca2+ bound state. Determined by electron microscopy at 3.74 Å resolution. Released 23 Apr 2025.

Method
Electron microscopy
Resolution
3.74 Å
Organism
Homo sapiens
Chains
16
Atoms
80,156
Mol. weight
1325.13 kDa
Ligands
ATP
Released
23 Apr 2025

Explore 8Z5T in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

8Z5T contains 520 α-helices and 366 β-strands across 16 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 52 helices, 38 β-strands

ElementResiduesLengthSheet
α-helix6-2116
α-helix23-253
α-helix32-343
β-strand42-4321
α-helix44-6320
α-helix68-9326
α-helix96-1038
α-helix112-1132
β-strand115-11621
α-helix135-15117
α-helix159-17214
α-helix175-1773
β-strand18012
β-strand19612
α-helix199-21113
β-strand21613
α-helix219-2213
α-helix224-2263
β-strand22713
α-helix233-24412
β-strand25614
α-helix257-2626
β-strand26415
β-strand26715
α-helix273-28715
β-strand288-29036
β-strand292-29436
β-strand29614
β-strand327-32826
α-helix329-34113
α-helix346-35813
β-strand360-36127
α-helix363-3653
β-strand367-36827
β-strand372-37436
α-helix381-3855
β-strand393-39536
α-helix401-41414
α-helix420-4234
α-helix429-4324
α-helix434-4352
β-strand439-44688
α-helix449-4579
β-strand463-46428
β-strand471-47449
α-helix476-4838
β-strand488-489210
β-strand494-495210
α-helix498-4992
α-helix504-5074
β-strand510-51349
β-strand516-52059
α-helix523-5253
α-helix531-5344
α-helix536-55217
β-strand561-56668
β-strand571111
β-strand578111
α-helix580-59011
β-strand594112
β-strand597112
β-strand598-60148
α-helix604-6085
β-strand613-61539
α-helix617-6193
α-helix763-77210
α-helix776-78914
α-helix806-82015
α-helix826-8327
α-helix840-8489
β-strand853-855313
β-strand867113
α-helix873-88412
α-helix890-90718
β-strand917-919313
α-helix920-93516
α-helix939-94810
α-helix951-96313
α-helix1054-106310
α-helix1071-108111
β-strand1084-1086314
β-strand1092-1093214
α-helix1096-10994
α-helix1105-111511
α-helix1121-114020
β-strand1148-1150314
α-helix1151-116919
α-helix1186-11905
β-strand1194115
α-helix1199-121315
Chain B: 54 helices, 38 β-strands
ElementResiduesLengthSheet
α-helix45-5713
α-helix70-723
β-strand81-83316
α-helix84-10219
α-helix111-13020
α-helix134-1418
α-helix145-1473
β-strand152-154316
β-strand160116
α-helix173-18917
α-helix196-21015
β-strand217117
β-strand233117
α-helix236-24914
β-strand253118
β-strand264118
α-helix269-27911
α-helix296-2994
α-helix312-32413
β-strand325119
β-strand330119
α-helix355-3584
β-strand364120
β-strand365119
α-helix367-37913
α-helix382-39211
α-helix393-3953
β-strand397-398221
β-strand404-405221
β-strand410-411220
α-helix414-4163
α-helix417-4226
α-helix428-4292
β-strand430-431220
β-strand436122
β-strand439122
α-helix442-45514
α-helix461-4644
β-strand479123
β-strand483123
β-strand494-501824
α-helix504-5118
β-strand518124
α-helix520-5234
β-strand527-529325
α-helix531-5399
β-strand566-568325
β-strand571-575525
α-helix578-5803
α-helix586-5894
α-helix591-60717
α-helix614-6152
β-strand616-621624
α-helix623-6253
α-helix628-6303
α-helix631-64313
β-strand645-646224
β-strand649-653524
α-helix656-6605
β-strand666-667225
α-helix670-6734
α-helix679-6813
α-helix687-6915
α-helix724-73310
α-helix737-75014
β-strand756-757226
β-strand760-761226
α-helix762-77514
α-helix779-78911
α-helix796-80510
β-strand809-812427
β-strand820-822327
α-helix828-8369
α-helix845-86319
α-helix865-8684
β-strand873-875327
α-helix876-89116
α-helix895-8962
α-helix903-91412
α-helix924-93411
α-helix941-95111
β-strand956-958328
β-strand961-963328
α-helix966-9716
α-helix977-98711
α-helix993-101220
β-strand1016129
β-strand1022-1023228
α-helix1024-104320
α-helix1045-10473
α-helix1065-107915
β-strand1082129
Chain C: 17 helices, 11 β-strands
ElementResiduesLengthSheet
α-helix13-197
β-strand20-28930
β-strand32-39830
β-strand47-52630
α-helix61-8020
β-strand92-95430
β-strand99-104630
β-strand111131
α-helix112-1198
α-helix124-14320
β-strand146-147232
α-helix153-1553
β-strand156-158331
β-strand164-166331
β-strand173-174232
α-helix193-1997
α-helix211-22515
α-helix235-24410
α-helix259-26810
α-helix277-2782
α-helix279-2835
α-helix301-31919
α-helix322-3243
α-helix330-3356
α-helix341-35414
α-helix367-3704
β-strand371115
α-helix378-3814
Chains D, H and P: 5 helices, 0 β-strands
ElementResiduesLengthSheet
α-helix7-2014
α-helix30-4011
α-helix46-5611
α-helix66-738
α-helix80-9314
Chain E: 51 helices, 36 β-strands
ElementResiduesLengthSheet
α-helix6-2116
α-helix23-253
α-helix32-343
β-strand41-43333
α-helix44-6320
α-helix68-9326
α-helix96-1027
α-helix112-1132
β-strand115-117333
α-helix135-15117
α-helix159-17214
α-helix173-1775
β-strand180134
β-strand196134
α-helix199-21113
β-strand216135
α-helix219-2213
α-helix224-2263
β-strand227135
α-helix232-24413
β-strand256136
α-helix257-2626
α-helix273-28715
β-strand288-289237
β-strand292-294337
β-strand296136
β-strand327-328237
α-helix330-34112
α-helix346-35813
β-strand360-361238
α-helix363-3653
β-strand367-368238
β-strand372-374337
α-helix381-3855
β-strand393-395337
α-helix401-41515
α-helix420-4234
α-helix434-4352
β-strand440-446739
α-helix449-4568
β-strand463-464239
β-strand471-474440
α-helix476-4838
β-strand488-489241
β-strand494-495241
α-helix504-5074
β-strand510-513440
β-strand516-520540
α-helix523-5253
α-helix531-5344
α-helix536-55217
β-strand561-566639
β-strand571142
β-strand578142
α-helix580-59011
β-strand594143
β-strand597143
β-strand599-601339
α-helix604-6085
β-strand613-615340
α-helix617-6193
α-helix763-77210
α-helix776-78914
α-helix806-82015
α-helix826-8338
α-helix840-8489
β-strand853-855344
β-strand867144
α-helix873-88412
α-helix885-8873
α-helix889-90719
β-strand917-919344
α-helix920-93516
α-helix939-94810
α-helix951-96313
α-helix1054-106310
α-helix1071-108111
β-strand1084-1086345
β-strand1092-1093245
α-helix1096-10994
α-helix1105-111511
α-helix1121-114020
β-strand1148-1150345
α-helix1151-116919
α-helix1186-11905
β-strand1194146
α-helix1199-121315
Chain F: 57 helices, 43 β-strands
ElementResiduesLengthSheet
α-helix45-5915
α-helix70-723
β-strand81-82247
α-helix84-10118
α-helix111-13020
α-helix134-1418
α-helix145-1473
β-strand153-154247
β-strand160147
α-helix164-1674
α-helix173-18816
α-helix196-20914
β-strand217148
β-strand233148
α-helix236-24813
β-strand253149
β-strand264149
α-helix269-28214
β-strand293150
α-helix296-2994
α-helix311-32414
β-strand325151
β-strand330151
β-strand333150
α-helix355-3584
β-strand364152
β-strand365151
α-helix367-37913
α-helix382-39211
α-helix393-3953
β-strand397-398253
β-strand404-405253
β-strand410-411252
α-helix414-4163
α-helix417-4226
β-strand430-431252
β-strand436154
β-strand439154
α-helix442-45514
α-helix473-4753
β-strand479155
β-strand483155
α-helix493-4942
β-strand495-501756
α-helix504-5118
β-strand518156
α-helix520-5234
β-strand526-529457
α-helix531-5399
β-strand543158
β-strand550158
α-helix561-5633
β-strand566-568357
β-strand571-575557
α-helix578-5803
α-helix586-5894
α-helix591-60717
β-strand616-621656
α-helix623-6253
α-helix628-6303
α-helix631-64313
β-strand645-646259
β-strand649-650259
β-strand651-653356
α-helix656-6605
β-strand666-667257
α-helix670-6734
α-helix679-6813
α-helix683-6853
α-helix687-6915
α-helix724-73310
α-helix737-75014
β-strand756-757260
β-strand760-761260
α-helix762-77514
α-helix779-78911
α-helix796-80510
β-strand809-813561
β-strand819-822461
α-helix828-8369
α-helix845-86319
α-helix865-8684
β-strand873-875361
α-helix876-89116
α-helix895-8962
α-helix903-91412
α-helix924-93411
α-helix941-95111
β-strand956-958362
β-strand961-963362
α-helix966-9716
α-helix977-98711
α-helix993-101220
β-strand1016163
β-strand1022-1023262
α-helix1024-104320
α-helix1045-10473
α-helix1065-107915
β-strand1082163
α-helix1083-10853
Chain G: 15 helices, 13 β-strands
ElementResiduesLengthSheet
α-helix13-197
β-strand20164
β-strand25-28465
β-strand32-36565
β-strand39164
β-strand47-52665
α-helix61-8020
β-strand92-95465
β-strand99-104665
β-strand111166
α-helix112-1198
α-helix124-14320
β-strand146-147267
β-strand156-158366
β-strand164-166366
β-strand173-174267
α-helix193-1986
α-helix210-22516
α-helix235-24410
α-helix259-26810
α-helix277-2782
α-helix279-2835
α-helix301-31919
α-helix330-3356
α-helix341-35414
α-helix367-3704
β-strand371146
α-helix378-3803
Chain I: 53 helices, 44 β-strands
ElementResiduesLengthSheet
α-helix6-2116
α-helix23-253
α-helix32-343
β-strand41-43368
α-helix44-6320
α-helix68-9326
α-helix96-1027
α-helix112-1132
β-strand115-117368
β-strand123168
α-helix135-15117
α-helix159-17214
α-helix175-1773
β-strand180169
β-strand196169
β-strand198170
α-helix199-21113
β-strand216171
α-helix224-2263
β-strand227171
α-helix232-24413
β-strand250170
β-strand256172
α-helix257-2615
β-strand264173
β-strand267173
α-helix273-28715
β-strand288-290374
β-strand292-293274
β-strand296172
β-strand327175
β-strand328174
α-helix329-34113
α-helix346-35813
β-strand360-361276
α-helix363-3653
β-strand367-368276
β-strand372-374375
α-helix381-3855
β-strand393-395375
α-helix401-41515
α-helix420-4234
α-helix429-4324
α-helix434-4352
β-strand439-440277
β-strand442-446578
α-helix449-4579
β-strand463-464278
β-strand471-474479
α-helix476-4838
β-strand488-489280
β-strand494-495280
α-helix498-4992
α-helix504-5074
β-strand510-513479
β-strand516-520579
α-helix523-5253
α-helix531-5344
α-helix536-55217
β-strand562-566578
α-helix568-5703
β-strand571181
β-strand578181
α-helix580-59112
β-strand593-594277
β-strand597-599377
α-helix604-6074
β-strand613-615379
α-helix617-6193
α-helix763-77210
α-helix776-78914
α-helix806-82015
α-helix826-8338
α-helix840-8489
β-strand853-855382
β-strand867182
α-helix873-88412
α-helix885-8873
α-helix890-90718
β-strand915183
β-strand917-919382
α-helix920-93516
α-helix939-94810
α-helix951-96313
α-helix1054-106310
β-strand1066183
α-helix1071-108111
β-strand1084-1086384
β-strand1092-1093284
α-helix1094-10974
α-helix1105-111511
α-helix1121-114020
β-strand1148-1150384
α-helix1151-116919
α-helix1186-11905
β-strand1194185
α-helix1199-121315

6 more chain groups are not listed. Open the entry in the viewer and use the sequence panel to see them.

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Phosphorylase b kinase regulatory subunit alpha, skeletal muscle isoformA, E, I, Mprotein1223Homo sapiensP46020 (AlphaFold model)
Phosphorylase b kinase regulatory subunit betaB, F, J, Nprotein1093Homo sapiensQ93100 (AlphaFold model)
Phosphorylase b kinase gamma catalytic chain, skeletal muscle/heart isoformC, G, K, Oprotein387Homo sapiensQ16816 (AlphaFold model)
Calmodulin-3D, H, L, Pprotein168Homo sapiensP0DP25 (AlphaFold model)
Sequence of entity 1 (A, E, I, M), FASTA
>8Z5T_1 Phosphorylase b kinase regulatory subunit alpha, skeletal muscle isoform (chains A, E, I, M)
MRSRSNSGVRLDGYARLVQQTILCHQNPVTGLLPASYDQKDAWVRDNVYSILAVWGLGLA
YRKNADRDEDKAKAYELEQSVVKLMRGLLHCMIRQVDKVESFKYSQSTKDSLHAKYNTKT
CATVVGDDQWGHLQLDATSVYLLFLAQMTASGLHIIHSLDEVNFIQNLVFYIEAAYKTAD
FGIWERGDKTNQGISELNASSVGMAKAALEALDELDLFGVKGGPQSVIHVLADEVQHCQS
ILNSLLPRASTSKEVDASLLSVVSFPAFAVEDSQLVELTKQEIITKLQGRYGCCRFLRDG
YKTPKEDPNRLYYEPAELKLFENIECEWPLFWTYFILDGVFSGNAEQVQEYKEALEAVLI
KGKNGVPLLPELYSVPPDRVDEEYQNPHTVDRVPMGKLPHMWGQSLYILGSLMAEGFLAP
GEIDPLNRRFSTVPKPDVVVQVSILAETEEIKTILKDKGIYVETIAEVYPIRVQPARILS
HIYSSLGCNNRMKLSGRPYRHMGVLGTSKLYDIRKTIFTFTPQFIDQQQFYLALDNKMIV
EMLRTDLSYLCSRWRMTGQPTITFPISHSMLDEDGTSLNSSILAALRKMQDGYFGGARVQ
TGKLSEFLTTSCCTHLSFMDPGPEGKLYSEDYDDNYDYLESGNWMNDYDSTSHARCGDEV
ARYLDHLLAHTAPHPKLAPTSQKGGLDRFQAAVQTTCDLMSLVTKAKELHVQNVHMYLPT
KLFQASRPSFNLLDSPHPRQENQVPSVRVEIHLPRDQSGEVDFKALVLQLKETSSLQEQA
DILYMLYTMKGPDWNTELYNERSATVRELLTELYGKVGEIRHWGLIRYISGILRKKVEAL
DEACTDLLSHQKHLTVGLPPEPREKTISAPLPYEALTQLIDEASEGDMSISILTQEIMVY
LAMYMRTQPGLFAEMFRLRIGLIIQVMATELAHSLRCSAEEATEGLMNLSPSAMKNLLHH
ILSGKEFGVERSVRPTDSNVSPAISIHEIGAVGATKTERTGIMQLKSEIKQVEFRRLSIS
AESQSPGTSMTPSSGSFPSAYDQQSSKDSRQGQWQRRRRLDGALNRVPVGFYQKVWKVLQ
KCHGLSVEGFVLPSSTTREMTPGEIKFSVHVESVLNRVPQPEYRQLLVEAILVLTMLADI
EIHSIGSIIAVEKIVHIANDLFLQEQKTLGADDTMLAKDPASGICTLLYDSAPSGRFGTM
TYLSKAAATYVQEFLPHSICAMQ
Sequence of entity 2 (B, F, J, N), FASTA
>8Z5T_2 Phosphorylase b kinase regulatory subunit beta (chains B, F, J, N)
MAGAAGLTAEVSWKVLERRARTKRSGSVYEPLKSINLPRPDNETLWDKLDHYYRIVKSTL
LLYQSPTTGLFPTKTCGGDQKAKIQDSLYCAAGAWALALAYRRIDDDKGRTHELEHSAIK
CMRGILYCYMRQADKVQQFKQDPRPTTCLHSVFNVHTGDELLSYEEYGHLQINAVSLYLL
YLVEMISSGLQIIYNTDEVSFIQNLVFCVERVYRVPDFGVWERGSKYNNGSTELHSSSVG
LAKAALEAINGFNLFGNQGCSWSVIFVDLDAHNRNRQTLCSLLPRESRSHNTDAALLPCI
SYPAFALDDEVLFSQTLDKVVRKLKGKYGFKRFLRDGYRTSLEDPNRCYYKPAEIKLFDG
IECEFPIFFLYMMIDGVFRGNPKQVQEYQDLLTPVLHHTTEGYPVVPKYYYVPADFVEYE
KNNPGSQKRFPSNCGRDGKLFLWGQALYIIAKLLADELISPKDIDPVQRYVPLKDQRNVS
MRFSNQGPLENDLVVHVALIAESQRLQVFLNTYGIQTQTPQQVEPIQIWPQQELVKAYLQ
LGINEKLGLSGRPDRPIGCLGTSKIYRILGKTVVCYPIIFDLSDFYMSQDVFLLIDDIKN
ALQFIKQYWKMHGRPLFLVLIREDNIRGSRFNPILDMLAALKKGIIGGVKVHVDRLQTLI
SGAVVEQLDFLRISDTEELPEFKSFEELEPPKHSKVKRQSSTPSAPELGQQPDVNISEWK
DKPTHEILQKLNDCSCLASQAILLGILLKREGPNFITKEGTVSDHIERVYRRAGSQKLWL
AVRYGAAFTQKFSSSIAPHITTFLVHGKQVTLGAFGHEEEVISNPLSPRVIQNIIYYKCN
THDEREAVIQQELVIHIGWIISNNPELFSGMLKIRIGWIIHAMEYELQIRGGDKPALDLY
QLSPSEVKQLLLDILQPQQNGRCWLNRRQIDGSLNRTPTGFYDRVWQILERTPNGIIVAG
KHLPQQPTLSDMTMYEMNFSLLVEDTLGNIDQPQYRQIVVELLMVVSIVLERNPELEFQD
KVDLDRLVKEAFNEFQKDQSRLKEIEKQDDMTSFYNTPPLGKRGTCSYLTKAVMNLLLEG
EVKPNNDDPCLIS
Sequence of entity 3 (C, G, K, O), FASTA
>8Z5T_3 Phosphorylase b kinase gamma catalytic chain, skeletal muscle/heart isoform (chains C, G, K, O)
MTRDEALPDSHSAQDFYENYEPKEILGRGVSSVVRRCIHKPTSQEYAVKVIDVTGGGSFS
PEEVRELREATLKEVDILRKVSGHPNIIQLKDTYETNTFFFLVFDLMKRGELFDYLTEKV
TLSEKETRKIMRALLEVICTLHKLNIVHRDLKPENILLDDNMNIKLTDFGFSCQLEPGER
LREVCGTPSYLAPEIIECSMNEDHPGYGKEVDMWSTGVIMYTLLAGSPPFWHRKQMLMLR
MIMSGNYQFGSPEWDDYSDTVKDLVSRFLVVQPQNRYTAEEALAHPFFQQYLVEEVRHFS
PRGKFKVIALTVLASVRIYYQYRRVKPVTREIVIRDPYALRPLRRLIDAYAFRIYGHWVK
KGQQQNRAALFENTPKAVLLSLAEEDY
Sequence of entity 4 (D, H, L, P), FASTA
>8Z5T_4 Calmodulin-3 (chains D, H, L, P)
DYKDDDDKSGPDEVDASGRMADQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLG
QNPTEAELQDMINEVDADGNGTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYI
SAAELRHVMTNLGEKLTDEEVDEMIREADIDGDGQVNYEEFVQMMTAK

Ligands and cofactors

IDNameFormulaCopies
ATPAdenosine-5'-triphosphateC10 H16 N5 O13 P38

Primary citation

Molecular basis for the regulation of human phosphorylase kinase by phosphorylation and Ca 2. Ma, R., Du, B., Shi, C. et al. Nat Commun (2025) 16:3020-3020. DOI 10.1038/s41467-025-58363-8 · PubMed

Other PDB entries of the same protein (UniProt P46020 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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