Structural Classification of Proteins
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Fold: alpha/alpha toroid

multihelical; up to seven alpha-hairpins are arranged in closed circular array; there may be sequence similarities between different superfamilies

Lineage:

  1. Root: scop
  2. Class: All alpha proteins [46456]
  3. Fold: alpha/alpha toroid [48207]
    multihelical; up to seven alpha-hairpins are arranged in closed circular array; there may be sequence similarities between different superfamilies

Superfamilies:

  1. Six-hairpin glycosidases [48208] (9)
    link to SUPERFAMILY database - Superfamily
    1. Glucoamylase [48209] (2) picpic
    2. Cellulases catalytic domain [48213] (13) picpic
    3. N-acylglucosamine (NAG) epimerase [48222] (2) picpic
    4. Glycosyltransferase family 36 C-terminal domain [63588] (2) picpic
      overall domain organization is similar to Bacterial glucoamylase
    5. Bacterial glucoamylase C-terminal domain-like [81850] (2) picpic
      overall domain organization is similar to Lactobacillus maltose phosphorylase
    6. Hypothetical protein YteR [89108] (1) picpic
      unknown function; weak sequence similarity to the catalytic domain of cellulases
    7. Glycosyl Hydrolase Family 88 [109953] (1) picpic
      Pfam 07470
    8. CPF0428-like [158737] (2) picpic
      Pfam 06824; DUF1237
    9. Trehalase-like [158742] (1) picpic
      Pham 01204
  2. Seven-hairpin glycosidases [48225] (1)
    link to SUPERFAMILY database - Superfamily
    1. Class I alpha-1;2-mannosidase, catalytic domain [48226] (5) picpic
  3. Chondroitin AC/alginate lyase [48230] (2)
    incomplete toroid
    link to SUPERFAMILY database - Superfamily
    1. Alginate lyase A1-III [48231] (1) picpic
    2. Hyaluronate lyase-like catalytic, N-terminal domain [48234] (6) picpic
  4. Family 10 polysaccharide lyase [81853] (1)
    link to SUPERFAMILY database - Superfamily
    1. Family 10 polysaccharide lyase [81854] (2) picpic
      incomplete toroid made of four hairpins
  5. Terpenoid cyclases/Protein prenyltransferases [48239] (4)
    link to SUPERFAMILY database - Superfamily
    1. Terpenoid cyclase N-terminal domain [48240] (2) picpic
      incomplete toroid made of four hairpins
    2. Terpene synthases [48243] (2) picpic
      consists of two toroid domains: one of six and one of five hairpins
    3. Protein prenyltransferases [48246] (3) picpic
    4. Complement components [48251] (3) picpic
      probably related to other families, but has no known enzymatic activity
  6. LanC-like [158745] (1)
    comprises seven hairpins
    1. LanC-like [158746] (1) picpic
      Pfam 05147; there are seven internal sequence repeats
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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