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MolNFT v1 · #190962 · protein + RNA

Cryo-EM structure of an archaeal AIF5B bound to the ssu translation initiation complex

7ZAH · 16S rRNA: “Cryo-EM structure of an archaeal AIF5B bound to the ssu translation initiation complex”. Electron microscopy, 4 ligands (MET, GNP, MG), 20 pockets (best druggability 0.86). MolNFT v1 #190962 on GenesisL1: 3D structure…

PDB
7ZAH
Type
protein + RNA
Length
5,884 residues
Chains
33
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
16S rRNA; 30S ribosomal protein S3AE; 30S ribosomal protein S2; Zn-ribbon RNA-binding…
UniProt
Q9V2K7, Q9V191, G8ZFK7, P61992, Q9V1U8, Q9V1V5, Q9UYS3, Q9V109, Q9V1V0, Q9UZL4, Q9V195, Q9V0V6, P62010, P61994, Q9V1A0, P62012, Q9V2K9, Q9V1U5, Q9V0G0, Q9V1T9, Q9V0G8, Q9UY20, Q9UXZ3, P61029, P61238, Q9V1U1, Q8U232, P62008, Q9V138, Q9UZK7
Ligands
MET, GNP, MG, ZN
Pockets
20 · best druggability 0.86

Structure

electron microscopy · 33 distinct chains · 32% helix, 25% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
216S rRNArna1497——
A30S ribosomal protein S3AEprotein18834% helix, 39% strandQ9V2K7
B30S ribosomal protein S2protein19637% helix, 15% strandQ9V191
CZn-ribbon RNA-binding protein involved in translationprotein5711% helix, 21% strandG8ZFK7
D30S ribosomal protein S4protein17352% helix, 6% strandP61992
E30S ribosomal protein S4Eprotein24215% helix, 37% strandQ9V1U8
F30S ribosomal protein S5protein22937% helix, 28% strandQ9V1V5
G30S ribosomal protein S6Eprotein12412% helix, 40% strandQ9UYS3
H30S ribosomal protein S7protein21446% helix, 14% strandQ9V109
I30S ribosomal protein S8protein12931% helix, 27% strandQ9V1V0
J30S ribosomal protein S8Eprotein1259% helix, 42% strandQ9UZL4
K30S ribosomal protein S9protein13541% helix, 21% strandQ9V195
L30S ribosomal protein S10protein10025% helix, 48% strandQ9V0V6
M30S ribosomal protein S11protein12726% helix, 28% strandP62010
N30S ribosomal protein S12protein14625% helix, 29% strandP61994
O30S ribosomal protein S13protein14145% helix, 9% strandQ9V1A0
P30S ribosomal protein S14 type Zprotein5538% helix, 9% strandP62012
Q30S ribosomal protein S15protein15149% helix, 1% strandQ9V2K9
R30S ribosomal protein S17protein1070% helix, 45% strandQ9V1U5
S30S ribosomal protein S17Eprotein6473% helix, 2% strandQ9V0G0
T30S ribosomal protein S19protein12435% helix, 12% strandQ9V1T9
U30S ribosomal protein S19Eprotein14952% helix, 13% strandQ9V0G8
V30S ribosomal protein S24Eprotein9629% helix, 38% strandQ9UY20
W30S ribosomal protein S27Eprotein610% helix, 39% strandQ9UXZ3
X30S ribosomal protein S28Eprotein650% helix, 48% strandP61029
Y30S ribosomal protein S27AEprotein490% helix, 8% strandP61238
Z30S ribosomal protein S3protein19637% helix, 28% strandQ9V1U1
050S ribosomal protein L41Eprotein3667% helix, 0% strandQ8U232
350S ribosomal protein L7AEprotein12235% helix, 13% strandP62008
5MRNArna22——
4TRNA-metrna77——
6Translation initiation factor 1Aprotein9221% helix, 34% strandQ9V138
7Translation initiation factor 5Bprotein59533% helix, 26% strandQ9UZK7

Ligands and binding sites

  • MET · Methionine · ligand · chains 4, 7
  • GNP · Phosphoaminophosphonic acid-guanylate ester · ligand · chains 7
  • MG · Magnesium ion · metal · 63 copies · chains 2, U, K, M, 5, D, F, 4, 7
  • ZN · Zinc ion · metal · 6 copies · chains C, F, P, R, W

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

20 pockets found on a 1 Å grid, 20 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19700.860.8887MG
26570.860.9165MG
39370.860.8899empty
49200.850.8776MG
511900.840.8677MG

Interfaces

78 interfaces between chains.

  • 2–E · 3943 Ų buried · 54 hydrogen bonds · protein-nucleic
  • 2–N · 3476 Ų buried · 52 hydrogen bonds · protein-nucleic
  • 2–J · 3280 Ų buried · 61 hydrogen bonds · protein-nucleic
  • 2–Q · 3185 Ų buried · 57 hydrogen bonds · protein-nucleic
  • 2–D · 3104 Ų buried · 55 hydrogen bonds · protein-nucleic

Modifications

Observed in the structure: 73 modified, 2 covalent (nucleotide modification, covalent ligand).

Compared structures

  • 7ZAH · Cryo-EM structure of a Pyrococcus abyssi 30S bound to Met-initiator tRNA, mRNA, aIF1A and… · the same entry in another collection · chain J against J, TM-score 1.00

Analyse

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