6E8G

CryoEM reconstruction of IST1-CHMP1B copolymer filament bound to ssDNA at 2.9 Angstrom resolution

• PDB DOI:  https://doi.org/10.2210/pdb6E8G/pdb
• EM Map EMD-9005: EMDB EMDataResource

• Classification: DNA BINDING PROTEIN, PROTEIN FIBRIL
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2018-07-29 Released: 2018-08-15 
• Deposition Author(s): Talledge, N., Frost, A., McCullough, J.
• Funding Organization(s): National Institutes of Health/Office of the Director, National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), Howard Hughes Medical Institute (HHMI), American Asthma Foundation, Chan Zuckerberg Biohub

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.90 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

The ESCRT-III proteins IST1 and CHMP1B assemble around nucleic acids

Talledge, N., McCullough, J., Wenzel, D.M., Nguyen, H.C., Lalonde, M., Bajorek, M., Skalicky, J.J., Frost, A., Sundquist, W.I.

(2018) Biorxiv 

• DOI: https://doi.org/10.1101/386532

Biological Assembly 1  

Global Symmetry: Helical - H  (Explore in 3D)
Global Stoichiometry: Hetero 72-mer - A36B36 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: mass spectrometry

Macromolecule Content

• Total Structure Weight: 2,237.94 kDa 
• Atom Count: 97,272 
• Modelled Residue Count: 12,276 
• Deposited Residue Count: 20,340 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
IST1 homolog	A [auth S], AA [auth BA], AB [auth BB], C [auth A], CA [auth DA], CB [auth DB], E [auth C], EA [auth FA], EB [auth FB], G [auth E], GA [auth HA], GB [auth HB], I [auth G], IA [auth JA], IB [auth JB], K [auth I], KA [auth LA], KB [auth LB], M [auth K], MA [auth NA], MB [auth NB], O [auth M], OA [auth PA], OB [auth PB], Q [auth O], QA [auth RA], QB [auth RB], S [auth Q], SA [auth TA], SB [auth TB], U [auth V], UA [auth VA], W [auth X], WA [auth XA], Y [auth Z], YA [auth ZA]	366	Homo sapiens	Mutation(s): 0  Gene Names: IST1, KIAA0174
UniProt & NIH Common Fund Data Resources
Find proteins for P53990 (Homo sapiens) Explore P53990  Go to UniProtKB:  P53990
PHAROS:  P53990

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Charged multivesicular body protein 1b	B [auth T], BA [auth CA], BB [auth CB], D [auth B], DA [auth EA], DB [auth EB], F [auth D], FA [auth GA], FB [auth GB], H [auth F], HA [auth IA], HB [auth IB], J [auth H], JA [auth KA], JB [auth KB], L [auth J], LA [auth MA], LB [auth MB], N [auth L], NA [auth OA], NB [auth OB], P [auth N], PA [auth QA], PB [auth QB], R [auth P], RA [auth SA], RB [auth SB], T [auth R], TA [auth UA], TB [auth UB], V [auth W], VA [auth WA], X [auth Y], XA [auth YA], Z [auth AA], ZA [auth AB]	199	Homo sapiens	Mutation(s): 1  Gene Names: CHMP1B, C18orf2
UniProt & NIH Common Fund Data Resources
Find proteins for Q7LBR1 (Homo sapiens) Explore Q7LBR1  Go to UniProtKB:  Q7LBR1
PHAROS:  Q7LBR1

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.90 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	2.1
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-08-15 
Deposition Author(s): Talledge, N., Frost, A., McCullough, J.

---

Funding Organization	Location	Grant Number
National Institutes of Health/Office of the Director	United States	S10OD020054
National Institutes of Health/Office of the Director	United States	1S10OD021741
National Institutes of Health/Office of the Director	United States	1S10OD021596-01
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	1DP2GM110772-01
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	3P50GM082545-07S1
Howard Hughes Medical Institute (HHMI)	United States	--
American Asthma Foundation	United States	--
Chan Zuckerberg Biohub	United States	--

Revision History  

• Version 1.0: 2018-08-15
  Type: Initial release
  
• Version 1.1: 2019-02-20
  Changes: Author supporting evidence, Data collection
• Version 1.2: 2019-11-20
  Changes: Author supporting evidence