Structural Classification of Proteins
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Fold: 4-helical cytokines

core: 4 helices; bundle, closed; left-handed twist; 2 crossover connections

Lineage:

  1. Root: scop
  2. Class: All alpha proteins [46456]
  3. Fold: 4-helical cytokines [47265]
    core: 4 helices; bundle, closed; left-handed twist; 2 crossover connections

Superfamilies:

  1. 4-helical cytokines [47266] (3)
    there are two different topoisomers of this fold with different entanglements of the two crossover connections
    link to SUPERFAMILY database - Superfamily
    1. Long-chain cytokines [47267] (14)
      1. Granulocyte-colony stimulating factor (G-CSF) [47268]
        1. Human (Homo sapiens) [TaxId: 9606] [47269] (5)
          1. 1rhg picpic
            1. chain a [16812] picpiclink
            2. chain b [16813] picpiclink
            3. chain c [16814] picpiclink
          2. 1cd9 picpicxref
            complexed with nag
            1. chain a [16815] picpiclink
            2. chain c [16816] picpiclink
          3. 2d9q picpicxrefxrefxref
            automatically matched to d1cd9a_
            complexed with nag; mutant
            1. region a:7-174 [131346] picpiclink
          4. 1pgr picpicxref
            1. chain a [16817] picpiclink
            2. chain c [16818] picpiclink
            3. chain e [16819] picpiclink
            4. chain g [16820] picpiclink
          5. 1gnc picpic
            1. chain a [16821] picpiclink
        2. Cow (Bos taurus) [TaxId: 9913] [47270] (1)
          1. 1bgc picpic
            1. chain a [16822] picpiclink
        3. Dog (Canis familiaris) [TaxId: 9615] [47271] (2)
          1. 1bge picpic
            1. chain a [16823] picpiclink
            2. chain b [16824] picpiclink
          2. 1bgd picpic
            1. chain a [16825] picpiclink
      2. Interleukin-6 [47272]
        1. Human (Homo sapiens) [TaxId: 9606] [47273] (4)
          1. 1alu picpic
            complexed with so4, tar
            1. chain a [16826] picpiclink
          2. 1p9m picpicxrefxref
            1. chain b [87994] picpiclink
          3. 2il6 picpic
            1. chain a [16828] picpiclink
          4. 1il6 picpic
            1. chain a [16827] picpiclink
        2. Human herpesvirus 8, Kaposi's sarcoma herpes-virus [TaxId: 37296] [63528] (1)
          1. 1i1r picpicxref
            1. chain b [61548] picpiclink
      3. Leukemia inhibitory factor (LIF) [47274]
        1. Mouse (Mus musculus) [TaxId: 10090] [47275] (2)
          1. 1lki picpic
            1. chain a [16829] picpiclink
          2. 1a7m picpic
            mouse-human chimera, residues 48-81 are from human sequence
            mutant
            1. chain a [16830] picpiclink
        2. Human (Homo sapiens) [TaxId: 9606] [63529] (4)
          1. 1pvh picpicxref
            complexed with iod
            1. chain b [95167] picpiclink
            2. chain d [95170] picpiclink
          2. 1emr picpic
            1. chain a [59456] picpiclink
          3. 2q7n picpic
            automatically matched to d1pvhb_
            complexed with fuc, man, nag
            1. region b:12-180 [150094] picpiclink
          4. 2q7n picpic
            automatically matched to d1pvhb_
            complexed with fuc, man, nag
            1. region d:12-180 [150095] picpiclink
      4. Growth hormone, somatotropin [47276]
        1. Human (Homo sapiens) [TaxId: 9606] [47277] (9)
          1. 1huw picpic
            mutant
            1. chain a [16831] picpiclink
          2. 1axi picpicxref
            complexed with so4; mutant
            1. chain a [16832] picpiclink
          3. 1hwg picpicxref
            mutant
            1. chain a [16834] picpiclink
          4. 1a22 picpicxref
            mutant
            1. chain a [16833] picpiclink
          5. 3hhr picpicxref
            1. chain a [16835] picpiclink
          6. 1kf9 picpicxref
            phage display derived variant
            1. chain a [77351] picpiclink
            2. chain d [77356] picpiclink
          7. 1hwh picpicxref
            mutant
            1. chain a [16836] picpiclink
          8. 1hgu picpic
            1. chain a [16837] picpiclink
          9. 1bp3 picpicxref
            complexed with zn; mutant
            1. chain a [16838] picpiclink
      5. Prolactin (placental lactogen) [47278]
        1. Sheep (Ovis aries) [TaxId: 9940] [47279] (1)
          1. 1f6f picpicxref
            1. chain a [16839] picpiclink
        2. Human (Homo sapiens) [TaxId: 9606] [89035] (2)
          1. 1rw5 picpic
            automatically matched to d1n9da_
            1. region a:1-199 [118792] picpiclink
          2. 1n9d picpic
            1. chain a [85464] picpiclink
      6. Ciliary neurotrophic factor (CNTF) [47280]
        1. Human (Homo sapiens) [TaxId: 9606] [47281] (1)
          1. 1cnt picpic
            complexed with so4, yb; mutant
            1. chain 1 [16840] picpiclink
            2. chain 2 [16841] picpiclink
            3. chain 3 [16842] picpiclink
            4. chain 4 [16843] picpiclink
      7. Leptin (obesity protein) [47282]
        1. Human (Homo sapiens) [TaxId: 9606] [47283] (1)
          1. 1ax8 picpic
            mutant
            1. chain a [16844] picpiclink
      8. Oncostatin M [47284]
        1. Human (Homo sapiens) [TaxId: 9606] [47285] (1)
          1. 1evs picpic
            1. chain a [16845] picpiclink
      9. Heterodimeric interleukin-12 alpha chain [63530]
        1. Human (Homo sapiens) [TaxId: 9606] [63531] (1)
          1. 1f45 picpicxrefxref
            complexed with man, nag; mutant
            1. chain b [59642] picpiclink
    2. Short-chain cytokines [47286] (14)
      1. Erythropoietin [47287]
        long chain cytokine with a short-chain cytokine topology
        1. Human (Homo sapiens) [TaxId: 9606] [47288] (3)
          1. 1eer picpicxref
            mutant
            1. chain a [16846] picpiclink
          2. 1cn4 picpicxref
            mutant
            1. chain c [16847] picpiclink
          3. 1buy picpic
            mutant
            1. chain a [16848] picpiclink
      2. Thrombopoietin [101140]
        long chain cytokine with a short-chain cytokine topology
        1. Human (Homo sapiens) [TaxId: 9606] [101141] (2)
          1. 1v7m picpicxrefxrefxrefxref
            1. chain v [100458] picpiclink
            2. chain x [100459] picpiclink
          2. 1v7n picpicxrefxrefxrefxref
            mutant
            1. chain v [100476] picpiclink
            2. chain x [100477] picpiclink
            3. chain y [100478] picpiclink
            4. chain z [100479] picpiclink
      3. Granulocyte-macrophage colony-stimulating factor (GM-CSF) [47289]
        1. Human (Homo sapiens) [TaxId: 9606] [47290] (3)
          1. 2gmf picpic
            1. chain a [16849] picpiclink
            2. chain b [16850] picpiclink
          2. 1csg picpic
            1. chain a [16851] picpiclink
            2. chain b [16852] picpiclink
          3. 3cxe picpic
            automatically matched to d2gmfa_
            complexed with bma, nag; mutant
            1. region b:14-118 [157108] picpiclink
      4. Interleukin-4 (IL-4) [47291]
        1. Human (Homo sapiens) [TaxId: 9606] [47292] (16)
          1. 2b8u picpic
            automatically matched to d1itl__
            complexed with so4
            1. region a:1-129 [128117] picpiclink
          2. 1hzi picpic
            complexed with so4; mutant
            1. chain a [61449] picpiclink
          3. 1iar picpicxref
            mutant
            1. chain a [16853] picpiclink
          4. 2int picpic
            1. chain a [16855] picpiclink
          5. 3bpl picpicxrefxref
            automatically matched to d1itla_
            complexed with fuc, nag
            1. region a:3-128 [155485] picpiclink
          6. 1rcb picpic
            1. chain a [16854] picpiclink
          7. 1hik picpic
            1. chain a [16856] picpiclink
          8. 3bpn picpic
            automatically matched to d1itla_
            complexed with nag
            1. region a:3-128 [155488] picpiclink
          9. 1hij picpic
            mutant
            1. chain a [16857] picpiclink
          10. 1itm picpic
            1. chain a [16858] picpiclink
          11. 1itl picpic
            mutant
            1. chain a [16859] picpiclink
          12. 2cyk picpic
            1. chain a [16863] picpiclink
          13. 1iti picpic
            mutant
            1. chain a [16864] picpiclink
          14. 1cyl picpic
            1. chain a [16860] picpiclink
          15. 1bcn picpic
            1. chain a [16862] picpiclink
          16. 1bbn picpic
            1. chain a [16861] picpiclink
      5. Interleukin-5 [47293]
        intertwined dimer
        1. Human (Homo sapiens) [TaxId: 9606] [47294] (1)
          1. 1hul picpic
            1. chain a [16865] picpiclink
            2. chain b [16866] picpiclink
      6. Macrophage colony-stimulating factor (M-CSF) [47295]
        forms dimer similar to the Flt3 ligand and SCF dimers
        1. Human (Homo sapiens) [TaxId: 9606] [47296] (1)
          1. 1hmc picpic
            CA-atoms only
            1. chain a [16867] picpiclink
            2. chain b [16868] picpiclink
      7. Flt3 ligand [47297]
        forms dimer similar to the M-CSF and SCF dimers
        1. Human (Homo sapiens) [TaxId: 9606] [47298] (1)
          1. 1ete picpic
            complexed with zn
            1. chain a [16869] picpiclink
            2. chain b [16870] picpiclink
            3. chain c [16871] picpiclink
            4. chain d [16872] picpiclink
      8. Stem cell factor, SCF [47299]
        forms dimer similar to the M-CSF and Flt3 ligand dimers
        1. Human (Homo sapiens) [TaxId: 9606] [47300] (3)
          1. 1scf picpic
            complexed with 1pe, ca
            1. chain a [16873] picpiclink
            2. chain b [16874] picpiclink
            3. chain c [16875] picpiclink
            4. chain d [16876] picpiclink
          2. 1exz picpic
            complexed with ca, sm, trs
            1. chain a [16877] picpiclink
            2. chain b [16878] picpiclink
            3. chain c [16879] picpiclink
            4. chain d [16880] picpiclink
          3. 2e9w picpic
            automatically matched to d1exzb_
            complexed with nag; mutant
            1. region c:2-140 [146738] picpiclink
      9. Interleukin-2 (IL-2) [47301]
        1. Human (Homo sapiens) [TaxId: 9606] [47302] (15)
          1. 1m48 picpic
            complexed with frg
            1. chain a [74443] picpiclink
            2. chain b [74444] picpiclink
          2. 1m47 picpic
            complexed with sul
            1. chain a [74442] picpiclink
          3. 1m49 picpic
            complexed with cmm
            1. chain a [74445] picpiclink
            2. chain b [74446] picpiclink
          4. 1nbp picpic
            complexed with mhc, sul; mutant
            1. chain a [80392] picpiclink
          5. 1m4b picpic
            complexed with nmp; mutant
            1. chain a [74448] picpiclink
          6. 2b5i picpicxrefxrefxrefxrefxrefxref
            automatically matched to d1m48b_
            complexed with nag; mutant
            1. region a:6-133 [127895] picpiclink
          7. 1m4a picpic
            complexed with gol, mpe; mutant
            1. chain a [74447] picpiclink
          8. 3ink picpic
            mutant
            1. chain c [16881] picpiclink
            2. chain d [16882] picpiclink
          9. 1m4c picpic
            1. chain a [74449] picpiclink
            2. chain b [74450] picpiclink
          10. 1pw6 picpic
            complexed with a small molecule inhibitor
            complexed with frb, so4
            1. chain a [95200] picpiclink
            2. chain b [95201] picpiclink
          11. 2erj picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to d3inkc_
            complexed with bma, fuc, nag; mutant
            1. region d:6-133 [132294] picpiclink
          12. 2erj picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to d3inkc_
            complexed with bma, fuc, nag; mutant
            1. region h:6-133 [132301] picpiclink
          13. 1z92 picpicxrefxref
            automatically matched to d1m48b_
            1. region a:6-133 [124737] picpiclink
          14. 1py2 picpic
            complexed with a small molecule inhibitor
            complexed with frh, zn
            1. chain a [95319] picpiclink
            2. chain b [95320] picpiclink
            3. chain c [95321] picpiclink
            4. chain d [95322] picpiclink
          15. 1irl picpic
            mutant
            1. chain a [16883] picpiclink
      10. Interleukin-3 (IL-3) [47303]
        1. Human (Homo sapiens) [TaxId: 9606] [47304] (1)
          1. 1jli picpic
            mutant with truncation at both N- and C-termini and 14 residue changes
            1. chain a [16884] picpiclink
      11. Interleukin-13 (IL-13) [63532]
        1. Human (Homo sapiens) [TaxId: 9606] [63533] (3)
          1. 1ik0 picpic
            1. chain a [71240] picpiclink
          2. 1ijz picpic
            1. chain a [71239] picpiclink
          3. 1ga3 picpic
            1. chain a [60411] picpiclink
      12. Interleukin-15 (IL-15) [158422]
        1. Human (Homo sapiens) [TaxId: 9606] [158423] (10)
          SQ P40933 49-162
          1. 2z3q picpicxrefxref
            1. region a:1-114 [154002] picpiclink
          2. 2z3q picpicxrefxref
            automatically matched to 2Z3Q A:1-114
            1. region c:1-112 [154004] picpiclink
          3. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region a:1-112 [154006] picpiclink
          4. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region c:1-114 [154008] picpiclink
          5. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region e:1-114 [154010] picpiclink
          6. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region g:1-114 [154012] picpiclink
          7. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region i:1-114 [154014] picpiclink
          8. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region k:1-114 [154016] picpiclink
          9. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region m:1-114 [154018] picpiclink
          10. 2z3r picpicxrefxrefxrefxrefxrefxrefxrefxref
            automatically matched to 2Z3Q A:1-114
            complexed with gol
            1. region o:1-113 [154020] picpiclink
        2. Mouse (Mus musculus) [TaxId: 10090] [158424] (2)
          SQ P48346 49-162
          1. 2psm picpicxrefxref
            complexed with bam
            1. region a:1-114 [149820] picpiclink
          2. 2psm picpicxrefxref
            automatically matched to 2PSM A:1-114
            complexed with bam
            1. region b:1-114 [149821] picpiclink
      13. Interleukin-21 (IL-21) [158425]
        1. Human (Homo sapiens) [TaxId: 9606] [158426] (1)
          SQ Q9HBE4 23-155
          1. 2oqp picpic
            1. region a:2-134 [148997] picpiclink
    3. Interferons/interleukin-10 (IL-10) [47305] (13)
      contains an additional helix in one of the crossover connections
      1. Interleukin-10 (cytokine synthesis inhibitory factor, CSIF) [47306]
        intertwined dimer, similar to interferon-gamma
        1. Human (Homo sapiens) [TaxId: 9606] [47307] (7)
          1. 2ilk picpic
            complexed with so4
            1. chain a [16885] picpiclink
          2. 1lk3 picpicxrefxrefxrefxref
            1. chain a [73950] picpiclink
            2. chain b [73951] picpiclink
          3. 1ilk picpic
            1. chain a [16886] picpiclink
          4. 2h24 picpic
            automatically matched to d2ilk__
            1. region a:18-159 [135988] picpiclink
          5. 1inr picpic
            1. chain a [16887] picpiclink
          6. 1y6k picpicxrefxref
            automatically matched to d2ilk__
            mutant
            1. region l:12-156 [122662] picpiclink
          7. 1j7v picpicxref
            complexed with IL-10 receptor 1 (IL-10R1)
            mutant
            1. chain l [62704] picpiclink
        2. Epstein-Barr virus [TaxId: 10376] [47308] (3)
          1. 1vlk picpic
            1. chain a [16888] picpiclink
          2. 1y6n picpicxrefxref
            mutant
            1. region l:12-157 [144600] picpiclink
          3. 1y6m picpicxrefxref
            automatically matched to d1vlk__
            mutant
            1. region l:12-157 [122665] picpiclink
        3. Human herpesvirus 5 [TaxId: 10359] [74708] (1)
          1. 1lqs picpicxref
            complexed with nag; mutant
            1. chain l [74192] picpiclink
            2. chain m [74193] picpiclink
      2. Interleukin-19 [81744]
        1. Human (Homo sapiens) [TaxId: 9606] [81745] (1)
          1. 1n1f picpic
            complexed with nag
            1. chain a [79803] picpiclink
      3. Interferon-beta [47309]
        1. Human (Homo sapiens) [TaxId: 9606] [47310] (1)
          1. 1au1 picpic
            complexed with fuc, gal, glc, man, zn
            1. chain a [16889] picpiclink
            2. chain b [16890] picpiclink
        2. Mouse (Mus musculus) [TaxId: 10090] [47311] (2)
          SQ P01575 22-182
          CA-atoms only
          1. 1wu3 picpic
            1. chain i [114890] picpiclink
          2. 1ifa picpic
            CA-atoms only
            1. chain a [16892] picpiclink
      4. Interleukin-22 (IL-22) [89036]
        1. Human (Homo sapiens) [TaxId: 9606] [89037] (8)
          1. 3dlq picpic
            automatically matched to d1m4ra_
            mutant
            1. region i:41-179 [157802] picpiclink
          2. 1m4r picpic
            1. chain a [84799] picpiclink
            2. chain b [84800] picpiclink
          3. 1ykb picpic
            automatically matched to d1m4ra_
            complexed with fuc, man, nag
            1. region a:39-179 [123503] picpiclink
          4. 1ykb picpic
            automatically matched to d1m4ra_
            complexed with fuc, man, nag
            1. region b:39-179 [123504] picpiclink
          5. 1ykb picpic
            automatically matched to d1m4ra_
            complexed with fuc, man, nag
            1. region c:39-179 [123505] picpiclink
          6. 1ykb picpic
            automatically matched to d1m4ra_
            complexed with fuc, man, nag
            1. region d:39-179 [123506] picpiclink
          7. 1ykb picpic
            automatically matched to d1m4ra_
            complexed with fuc, man, nag
            1. region e:39-179 [123507] picpiclink
          8. 1ykb picpic
            automatically matched to d1m4ra_
            complexed with fuc, man, nag
            1. region f:39-179 [123508] picpiclink
      5. Interferon-alpha 2b [47312]
        1. Human (Homo sapiens) [TaxId: 9606] [47313] (1)
          1. 1rh2 picpic
            CA-atoms only
            complexed with zn
            1. chain a [16893] picpiclink
            2. chain b [16894] picpiclink
            3. chain c [16895] picpiclink
            4. chain d [16896] picpiclink
            5. chain e [16897] picpiclink
            6. chain f [16898] picpiclink
      6. Interferon-alpha 2a [47314]
        1. Human (Homo sapiens) [TaxId: 9606] [47315] (2)
          1. 1itf picpic
            1. chain a [16899] picpiclink
          2. 2hym picpicxrefxref
            automatically matched to d1itf__
            1. region b:1-165 [136900] picpiclink
      7. Interferon-tau [47316]
        1. Sheep (Ovis aries) [TaxId: 9940] [47317] (1)
          1. 1b5l picpic
            complexed with so4
            1. chain a [16900] picpiclink
      8. Interferon-gamma [47318]
        intertwined dimer
        1. Cow (Bos taurus) [TaxId: 9913] [47319] (3)
          1. 1d9c picpic
            1. chain a [16901] picpiclink
            2. chain b [16902] picpiclink
          2. 1d9g picpic
            1. chain a [16903] picpiclink
            2. chain b [16904] picpiclink
          3. 1rfb picpic
            1. chain a [16905] picpiclink
            2. chain b [16906] picpiclink
        2. Human (Homo sapiens) [TaxId: 9606] [47320] (5)
          1. 3bes picpic
            automatically matched to d1fg9a_
            complexed with bma, nag, po4
            1. region l:0-126 [155196] picpiclink
          2. 1fyh picpicxref
            a single-chain variant
            complexed with cl
            1. region a:0-124 [16907] picpiclink
            2. region a:201-324 [16908] picpiclink
            3. region d:0-124 [16909] picpiclink
            4. region d:201-324 [16910] picpiclink
          3. 1fg9 picpicxref
            1. chain a [16915] picpiclink
            2. chain b [16916] picpiclink
          4. 1hig picpic
            CA-atoms only
            1. chain a [16917] picpiclink
            2. chain b [16918] picpiclink
            3. chain c [16919] picpiclink
            4. chain d [16920] picpiclink
          5. 1eku picpic
            biologically active single chain mutant
            1. region a:0-121 [16911] picpiclink
            2. region a:123-242 [16912] picpiclink
            3. region b:0-121 [16913] picpiclink
            4. region b:123-241 [16914] picpiclink
        3. Rabbit (Oryctolagus cuniculus) [TaxId: 9986] [47321] (1)
          1. 2rig picpic
            CA-atoms only
            1. chain a [16921] picpiclink
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MRC site Generated from scop database 1.75 with scopm 1.101 on Wed Jun 3 10:42:06 2009
Copyright © 1994-2009 The scop authors / scop@mrc-lmb.cam.ac.uk