3B7M | pdb_00003b7m

Crystal structure of a meso-active thermo-stable cellulase (MT Cel12A) derived by making non-contiguous mutations in the active surface of the Cel12A cellulase of Rhodothermus marinus

PDB DOI: https://doi.org/10.2210/pdb3B7M/pdb

Classification: HYDROLASE
Organism(s): Rhodothermus marinus
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2007-10-31 Released: 2007-11-27
Deposition Author(s): Karthikeyan, S., Guptasarma, P.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free:
0.238 (Depositor), 0.241 (DCC)
R-Value Work:
0.186 (Depositor), 0.189 (DCC)
R-Value Observed:
0.189 (Depositor)

Starting Model: experimental
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This is version 1.4 of the entry. See complete history.

Literature

Transplantation of the active surface of a mesophile cellulase onto the structural scaffold of a homologous thermophile cellulase through engineering of a surface beta sheet

Kapoor, D., Kumar, V., Chandrayan, S.K., Ahmed, S., Sharma, S., Datt, M., Singh, B., Karthikeyan, S., Guptasarma, P.

To be published.

Macromolecule Content

Total Structure Weight: 95.09 kDa
Atom Count: 7,062
Modeled Residue Count: 864
Deposited Residue Count: 864
Unique protein chains: 1

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CELLULASE	A, B, C, D	216	Rhodothermus marinus	Mutation(s): 0 Gene Names: celA EC: 3.2.1.4
UniProt
Find proteins for O33897 (Rhodothermus marinus) Explore O33897 Go to UniProtKB: O33897
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	O33897
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free: 0.238 (Depositor), 0.241 (DCC)
R-Value Work: 0.186 (Depositor), 0.189 (DCC)
R-Value Observed: 0.189 (Depositor)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.398	α = 90
b = 111.874	β = 90
c = 133.707	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MAR345	data collection
AUTOMAR	data reduction
MOLREP	phasing

Structure Validation

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Entry History

Deposition Data

Released Date: 2007-11-27

Deposition Author(s):

Karthikeyan, S.

Revision History (Full details and data files)

Version 1.0: 2007-11-27
Type: Initial release
Version 1.1: 2011-07-13
Changes: Version format compliance
Version 1.2: 2017-10-25
Changes: Refinement description
Version 1.3: 2023-11-01
Changes: Data collection, Database references, Refinement description
Version 1.4: 2024-10-09
Changes: Structure summary

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.