Motion in Ras Protein [ras]

[ jump to morphs ]

Classification Known Fragment Motion, Hinge Mechanism [F-h-2]

Structures
4Q21 Conformation 1 [ PartsList ]
6Q21 Conformation 2 [ PartsList ]

Description
2 loop movements move CA atoms up to 10 Angstrom (one movement includes helix attached to loop). The small G-proteins Rap, Rac and Rho have similar folds and motions. Ran has a similar fold, but a much larger and more complex motion.

Particular values describing motion
Creation Date = 19970822
Modification Date = 19970822
Experimental Methods = tx (Time-resolved and traditional X-ray structures)

References
M V Milburn, L Tong, A DeVos, A Brünger, Z Yamaizumi, S Nishimura and S-H Kim (1990). Molecular Switch for Signal Transduction: Structural Differences Between Active and Inactive Forms of Protooncogenic ras Proteins. Science. 247: 939-945. [Medline info for 97074462]
I Schlichting, S C Almo, G Rapp, K Wilson, K Petratos, A Lentfer, A Wittinghofer, W Kabsch, E F Pai, G A Petsko and R S Goody (1990). Time-resolved X-ray crystallographic study of the conformational change in Ha-Ras p21 protein on GTP hydrolysis. Nature. 345: 309. [Medline info for 97074462]
E F Pai, U Krengel, G A Peetsko, R S Goody, W Kabsch, and A Wittinghofer (1990). Refined crystal structure of the triphosphate conformation of H-ras p21 at 1.35 A resolution: implications for the mechanism of GTP hydrolysis. EMBO Journ. 9:2351-2359. [Medline info for 90316087]

Data and Graphics
MPI : GTP-binding proteins Home page for laboratories at MPI studying Ras and related structures.
Experimental method: Time-resolved x-ray crystallography Information on the time-resolved x-ray crystallography method

GO terms associated with structures
Molecular functionGTP binding
Biological processsmall GTPase mediated signal transduction

Morphs

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Best representative
Morph Morph name Structure #1 Structure #2 Residues
Ras 4q21 [ A ] 6q21 [ A ] 171

User-submitted morphs
Morph Morph name Structure #1 Structure #2 Residues
p21ras P21Ras 4q21 [ A ] 6q21 [ A ] 171
901248-7405 Rab (GDP --> GTP) 1ky3 [ A ] 1ky2 [ A ] 182
898947-30738 Rac (GDP --> GTP) 1i4d [ D ] 1i4t [ D ] 192
899775-1679 Rap (GDP --> GTP) 1kao [ A ] 3rap [ S ] 167
746078-21475 RAS 1lf0 [ A ] 1lf5 [ A ] 166
844256-30917 Ras 5p21 [ A ] 4q21 [ A ] 189
522546-9142 Ras upload [ A ] upload [ A ] 166
847226-28845 RAS upload [ A ] upload [ A ] 166
575703-5032 ras p21 4q21 [ A ] 6q21 [ A ] 171
575241-3810 ras p21 mutant 1plk [ A ] 1pll [ A ] 166
55051-2222 Ras protein 4q21 [ A ] 6q21 [ A ] 171
425458-23961 Ras Protein 4q21 [ A ] 6q21 [ A ] 171
124460-9905 ras protein - active 4q21 [ A ] 6q21 [ A ] 171
502165-31633 Ras Seg3 upload [ A ] upload [ A ] 166
898789-29795 Rho (GDP --> GTP) 1ftn [ A ] 1a2b [ A ] 182
28217-19903 Via_align 4q21 [ A ] 1gnr [ A ] 166
98034-32638 Via_align 1gnr [ A ] 4q21 [ A ] 189

Automatic morphs
Morph Morph name Structure #1 Structure #2 Residues
va5p21A-2gdpA c-H-Ras p21 Protein (Amino Aci 5p21 [ A ] 2gdp [ A ] 171
va5p21A-1crrA c-H-Ras p21 Protein (Amino Aci 5p21 [ A ] 1crr [ A ] 166
va5p21A-1q21A c-H-Ras p21 Protein (Amino Aci 5p21 [ A ] 1q21 [ A ] 171
va1crpA-1bkdR C-H-Ras P21 Protein (Catalytic 1crp [ A ] 1bkd [ R ] 166
va1crqA-1bkdR C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1bkd [ R ] 166
va1crrA-1bkdR C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1bkd [ R ] 166
va1crpA-1aa9A C-H-Ras P21 Protein (Catalytic 1crp [ A ] 1aa9 [ A ] 171
va1crrA-1aa9A C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1aa9 [ A ] 171
va2gdpA-1crpA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1crp [ A ] 166
va2gdpA-1crqA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1crq [ A ] 166
va2gdpA-1crrA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1crr [ A ] 166
va2gdpA-1aa9A C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1aa9 [ A ] 171
va2gdpA-6q21B C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 6q21 [ B ] 171
va1crqA-2q21A C-H-Ras P21 Protein (Catalytic 1crq [ A ] 2q21 [ A ] 171
va1crpA-1lfdD C-H-Ras P21 Protein (Catalytic 1crp [ A ] 1lfd [ D ] 167
va1crqA-1aa9A C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1aa9 [ A ] 171
va1crpA-421pA C-H-Ras P21 Protein (Catalytic 1crp [ A ] 421p [ A ] 166
va2gdpA-6q21D C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 6q21 [ D ] 171
va2gdpA-1he8B C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1he8 [ B ] 166
va1crpA-5p21A C-H-Ras P21 Protein (Catalytic 1crp [ A ] 5p21 [ A ] 166
va2gdpA-1qraA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1qra [ A ] 166
va1crpA-221pA C-H-Ras P21 Protein (Catalytic 1crp [ A ] 221p [ A ] 166
va1crpA-2q21A C-H-Ras P21 Protein (Catalytic 1crp [ A ] 2q21 [ A ] 171
va2gdpA-1agpA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1agp [ A ] 166
va2gdpA-621pA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 621p [ A ] 166
va1crrA-2q21A C-H-Ras P21 Protein (Catalytic 1crr [ A ] 2q21 [ A ] 171
va1crrA-1he8B C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1he8 [ B ] 166
va1crrA-1jaiA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1jai [ A ] 166
va1crrA-221pA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 221p [ A ] 166
va1crpA-1he8B C-H-Ras P21 Protein (Catalytic 1crp [ A ] 1he8 [ B ] 166
va2gdpA-1q21A C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1q21 [ A ] 171
va1crpA-1lfdB C-H-Ras P21 Protein (Catalytic 1crp [ A ] 1lfd [ B ] 167
va1crpA-1gnpA C-H-Ras P21 Protein (Catalytic 1crp [ A ] 1gnp [ A ] 166
va2gdpA-1gnqA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1gnq [ A ] 166
va1crrA-121pA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 121p [ A ] 166
va1crqA-1lfdD C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1lfd [ D ] 167
va1crpA-121pA C-H-Ras P21 Protein (Catalytic 1crp [ A ] 121p [ A ] 166
va2gdpA-1gnpA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1gnp [ A ] 166
va2gdpA-1jaiA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 1jai [ A ] 166
va1crpA-821pA C-H-Ras P21 Protein (Catalytic 1crp [ A ] 821p [ A ] 166
va1crqA-1lfdB C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1lfd [ B ] 167
va2gdpA-721pA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 721p [ A ] 166
va1crqA-421pA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 421p [ A ] 166
va2gdpA-421pA C-H-Ras P21 Protein (Catalytic 2gdp [ A ] 421p [ A ] 166
va1crqA-221pA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 221p [ A ] 166
va1crrA-1gnpA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1gnp [ A ] 166
va1crrA-421pA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 421p [ A ] 166
va1crrA-1agpA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1agp [ A ] 166
va1crrA-821pA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 821p [ A ] 166
va1crrA-1gnqA C-H-Ras P21 Protein (Catalytic 1crr [ A ] 1gnq [ A ] 166
va1crqA-1he8B C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1he8 [ B ] 166
va1crqA-1gnpA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1gnp [ A ] 166
va1crqA-5p21A C-H-Ras P21 Protein (Catalytic 1crq [ A ] 5p21 [ A ] 166
va1crqA-1agpA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1agp [ A ] 166
va1crqA-1gnqA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 1gnq [ A ] 166
va1crqA-121pA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 121p [ A ] 166
va1crqA-821pA C-H-Ras P21 Protein (Catalytic 1crq [ A ] 821p [ A ] 166
va821pA-1bkdR C-H-Ras P21 Protein (Residues 821p [ A ] 1bkd [ R ] 166
va821pA-1aa9A C-H-Ras P21 Protein (Residues 821p [ A ] 1aa9 [ A ] 171
va821pA-2gdpA C-H-Ras P21 Protein (Residues 821p [ A ] 2gdp [ A ] 171
va821pA-2q21A C-H-Ras P21 Protein (Residues 821p [ A ] 2q21 [ A ] 171
va1q21A-1bkdR c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1bkd [ R ] 166
va6q21A-1bkdR c-H-Ras p21 Protein Catalytic 6q21 [ A ] 1bkd [ R ] 166
va6q21C-1bkdR c-H-Ras p21 Protein Catalytic 6q21 [ C ] 1bkd [ R ] 166
va6q21B-1bkdR c-H-Ras p21 Protein Catalytic 6q21 [ B ] 1bkd [ R ] 166
va2q21A-1bkdR c-H-Ras p21 Protein Catalytic 2q21 [ A ] 1bkd [ R ] 166
va6q21D-1bkdR c-H-Ras p21 Protein Catalytic 6q21 [ D ] 1bkd [ R ] 166
va6q21A-2gdpA c-H-Ras p21 Protein Catalytic 6q21 [ A ] 2gdp [ A ] 171
va6q21B-1aa9A c-H-Ras p21 Protein Catalytic 6q21 [ B ] 1aa9 [ A ] 171
va2q21A-6q21A c-H-Ras p21 Protein Catalytic 2q21 [ A ] 6q21 [ A ] 171
va1q21A-1crrA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1crr [ A ] 166
va1q21A-1crqA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1crq [ A ] 166
va6q21A-1crpA c-H-Ras p21 Protein Catalytic 6q21 [ A ] 1crp [ A ] 166
va6q21C-1crpA c-H-Ras p21 Protein Catalytic 6q21 [ C ] 1crp [ A ] 166
va1q21A-1crpA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1crp [ A ] 166
va6q21B-1crrA c-H-Ras p21 Protein Catalytic 6q21 [ B ] 1crr [ A ] 166
va6q21D-1aa9A c-H-Ras p21 Protein Catalytic 6q21 [ D ] 1aa9 [ A ] 171
va6q21A-1crrA c-H-Ras p21 Protein Catalytic 6q21 [ A ] 1crr [ A ] 166
va1q21A-6q21A c-H-Ras p21 Protein Catalytic 1q21 [ A ] 6q21 [ A ] 171
va6q21B-1crpA c-H-Ras p21 Protein Catalytic 6q21 [ B ] 1crp [ A ] 166
va6q21C-2gdpA c-H-Ras p21 Protein Catalytic 6q21 [ C ] 2gdp [ A ] 171
va2q21A-2gdpA c-H-Ras p21 Protein Catalytic 2q21 [ A ] 2gdp [ A ] 171
va6q21D-1crpA c-H-Ras p21 Protein Catalytic 6q21 [ D ] 1crp [ A ] 166
va6q21B-1q21A c-H-Ras p21 Protein Catalytic 6q21 [ B ] 1q21 [ A ] 171
va6q21C-1crqA c-H-Ras p21 Protein Catalytic 6q21 [ C ] 1crq [ A ] 166
va2q21A-1ctqA c-H-Ras p21 Protein Catalytic 2q21 [ A ] 1ctq [ A ] 166
va1q21A-1ctqA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1ctq [ A ] 166
va6q21D-1crrA c-H-Ras p21 Protein Catalytic 6q21 [ D ] 1crr [ A ] 166
va6q21C-1crrA c-H-Ras p21 Protein Catalytic 6q21 [ C ] 1crr [ A ] 166
va1q21A-421pA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 421p [ A ] 166
va1q21A-1agpA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1agp [ A ] 166
va1q21A-1he8B c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1he8 [ B ] 166
va1q21A-1aa9A c-H-Ras p21 Protein Catalytic 1q21 [ A ] 1aa9 [ A ] 171
va1q21A-121pA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 121p [ A ] 166
va2q21A-121pA c-H-Ras p21 Protein Catalytic 2q21 [ A ] 121p [ A ] 166
va6q21B-2q21A c-H-Ras p21 Protein Catalytic 6q21 [ B ] 2q21 [ A ] 171
va2q21A-5p21A c-H-Ras p21 Protein Catalytic 2q21 [ A ] 5p21 [ A ] 166
va6q21A-1crqA c-H-Ras p21 Protein Catalytic 6q21 [ A ] 1crq [ A ] 166
va6q21B-1crqA c-H-Ras p21 Protein Catalytic 6q21 [ B ] 1crq [ A ] 166
va1q21A-821pA c-H-Ras p21 Protein Catalytic 1q21 [ A ] 821p [ A ] 166
va2q21A-521pA c-H-Ras p21 Protein Catalytic 2q21 [ A ] 521p [ A ] 166
va2q21A-6q21C c-H-Ras p21 Protein Catalytic 2q21 [ A ] 6q21 [ C ] 171
va6q21D-1crqA c-H-Ras p21 Protein Catalytic 6q21 [ D ] 1crq [ A ] 166
va1q21A-6q21C c-H-Ras p21 Protein Catalytic 1q21 [ A ] 6q21 [ C ] 171
va2q21A-1agpA c-H-Ras p21 Protein Catalytic 2q21 [ A ] 1agp [ A ] 166
va1gnqA-1bkdR C-H-Ras P21 Protein Complexed 1gnq [ A ] 1bkd [ R ] 166
va1gnpA-1bkdR C-H-Ras P21 Protein Complexed 1gnp [ A ] 1bkd [ R ] 166
va1gnqA-1aa9A C-H-Ras P21 Protein Complexed 1gnq [ A ] 1aa9 [ A ] 171
va1gnpA-1aa9A C-H-Ras P21 Protein Complexed 1gnp [ A ] 1aa9 [ A ] 171
va1gnqA-1crpA C-H-Ras P21 Protein Complexed 1gnq [ A ] 1crp [ A ] 166
va1gnpA-2q21A C-H-Ras P21 Protein Complexed 1gnp [ A ] 2q21 [ A ] 171
va1gnpA-1q21A C-H-Ras P21 Protein Complexed 1gnp [ A ] 1q21 [ A ] 171
va1gnqA-1q21A C-H-Ras P21 Protein Complexed 1gnq [ A ] 1q21 [ A ] 171
va1gnqA-2q21A C-H-Ras P21 Protein Complexed 1gnq [ A ] 2q21 [ A ] 171
va1agpA-1bkdR C-H-Ras P21 Protein Mutant Wit 1agp [ A ] 1bkd [ R ] 166
va1agpA-1crpA C-H-Ras P21 Protein Mutant Wit 1agp [ A ] 1crp [ A ] 166
va1agpA-1aa9A C-H-Ras P21 Protein Mutant Wit 1agp [ A ] 1aa9 [ A ] 171
va1aa9A-1bkdR C-Ha-Ras 1aa9 [ A ] 1bkd [ R ] 166
va1jaiA-1bkdR C-Ha-Ras 1jai [ A ] 1bkd [ R ] 166
va1aa9A-421pA C-Ha-Ras 1aa9 [ A ] 421p [ A ] 166
va1aa9A-6q21C C-Ha-Ras 1aa9 [ A ] 6q21 [ C ] 171
va1aa9A-5p21A C-Ha-Ras 1aa9 [ A ] 5p21 [ A ] 166
va1aa9A-121pA C-Ha-Ras 1aa9 [ A ] 121p [ A ] 166
va1aa9A-1ctqA C-Ha-Ras 1aa9 [ A ] 1ctq [ A ] 166
va1aa9A-1he8B C-Ha-Ras 1aa9 [ A ] 1he8 [ B ] 166
va1aa9A-1wq1R C-Ha-Ras 1aa9 [ A ] 1wq1 [ R ] 166
va1aa9A-6q21A C-Ha-Ras 1aa9 [ A ] 6q21 [ A ] 171
va1jaiA-1crpA C-Ha-Ras 1jai [ A ] 1crp [ A ] 166
va1jaiA-1aa9A C-Ha-Ras 1jai [ A ] 1aa9 [ A ] 171
va1aa9A-2q21A C-Ha-Ras 1aa9 [ A ] 2q21 [ A ] 171
va1jaiA-1crqA C-Ha-Ras 1jai [ A ] 1crq [ A ] 166
va1bkdR-1lfdD H-Ras 1bkd [ R ] 1lfd [ D ] 167
va1bkdR-1lfdB H-Ras 1bkd [ R ] 1lfd [ B ] 167
va1bkdR-221pA H-Ras 1bkd [ R ] 221p [ A ] 166
va1bkdR-621pA H-Ras 1bkd [ R ] 621p [ A ] 166
va1bkdR-121pA H-Ras 1bkd [ R ] 121p [ A ] 166
va1bkdR-5p21A H-Ras 1bkd [ R ] 5p21 [ A ] 166
va1bkdR-1wq1R H-Ras 1bkd [ R ] 1wq1 [ R ] 166
va1bkdR-2gdpA H-Ras 1bkd [ R ] 2gdp [ A ] 171
va1bkdR-1he8B H-Ras 1bkd [ R ] 1he8 [ B ] 166
va1wq1R-1crrA H-Ras 1wq1 [ R ] 1crr [ A ] 166
va1wq1R-1crpA H-Ras 1wq1 [ R ] 1crp [ A ] 166
va1wq1R-2gdpA H-Ras 1wq1 [ R ] 2gdp [ A ] 171
va1wq1R-1crqA H-Ras 1wq1 [ R ] 1crq [ A ] 166
va121pA-2gdpA H-Ras P21 Protein Complex With 121p [ A ] 2gdp [ A ] 171
va721pA-1bkdR H-Ras P21 Protein Mutant With 721p [ A ] 1bkd [ R ] 166
va421pA-1bkdR H-Ras P21 Protein Mutant With 421p [ A ] 1bkd [ R ] 166
va621pA-1aa9A H-Ras P21 Protein Mutant With 621p [ A ] 1aa9 [ A ] 171
va221pA-1aa9A H-Ras P21 Protein Mutant With 221p [ A ] 1aa9 [ A ] 171
va721pA-1crpA H-Ras P21 Protein Mutant With 721p [ A ] 1crp [ A ] 166
va721pA-1aa9A H-Ras P21 Protein Mutant With 721p [ A ] 1aa9 [ A ] 171
va621pA-1crrA H-Ras P21 Protein Mutant With 621p [ A ] 1crr [ A ] 166
va621pA-1crpA H-Ras P21 Protein Mutant With 621p [ A ] 1crp [ A ] 166
va721pA-1crrA H-Ras P21 Protein Mutant With 721p [ A ] 1crr [ A ] 166
va621pA-1q21A H-Ras P21 Protein Mutant With 621p [ A ] 1q21 [ A ] 171
va221pA-2gdpA H-Ras P21 Protein Mutant With 221p [ A ] 2gdp [ A ] 171
va421pA-2q21A H-Ras P21 Protein Mutant With 421p [ A ] 2q21 [ A ] 171
va721pA-1crqA H-Ras P21 Protein Mutant With 721p [ A ] 1crq [ A ] 166
va621pA-1crqA H-Ras P21 Protein Mutant With 621p [ A ] 1crq [ A ] 166
va221pA-1q21A H-Ras P21 Protein Mutant With 221p [ A ] 1q21 [ A ] 171
va721pA-1q21A H-Ras P21 Protein Mutant With 721p [ A ] 1q21 [ A ] 171
va1lfdD-2gdpA Ras 1lfd [ D ] 2gdp [ A ] 171
va1lfdD-1crrA Ras 1lfd [ D ] 1crr [ A ] 166
va1lfdD-1aa9A Ras 1lfd [ D ] 1aa9 [ A ] 171
va1lfdB-1aa9A Ras 1lfd [ B ] 1aa9 [ A ] 171
va1lfdB-2gdpA Ras 1lfd [ B ] 2gdp [ A ] 171
va1lfdB-1crrA Ras 1lfd [ B ] 1crr [ A ] 166
va1lfdD-1q21A Ras 1lfd [ D ] 1q21 [ A ] 171
va1lfdB-1q21A Ras 1lfd [ B ] 1q21 [ A ] 171
va1ctqA-1bkdR Transforming Protein P21/H-Ras 1ctq [ A ] 1bkd [ R ] 166
va1qraA-1bkdR Transforming Protein P21/H-Ras 1qra [ A ] 1bkd [ R ] 166
va1qraA-1aa9A Transforming Protein P21/H-Ras 1qra [ A ] 1aa9 [ A ] 171
va1ctqA-2gdpA Transforming Protein P21/H-Ras 1ctq [ A ] 2gdp [ A ] 171
va1qraA-1crpA Transforming Protein P21/H-Ras 1qra [ A ] 1crp [ A ] 166
va1ctqA-1crpA Transforming Protein P21/H-Ras 1ctq [ A ] 1crp [ A ] 166
va1he8B-2q21A Transforming Protein P21/H-Ras 1he8 [ B ] 2q21 [ A ] 171
va1qraA-1q21A Transforming Protein P21/H-Ras 1qra [ A ] 1q21 [ A ] 171
va1qraA-2q21A Transforming Protein P21/H-Ras 1qra [ A ] 2q21 [ A ] 171
va1ctqA-1crqA Transforming Protein P21/H-Ras 1ctq [ A ] 1crq [ A ] 166
va1qraA-1crrA Transforming Protein P21/H-Ras 1qra [ A ] 1crr [ A ] 166
va1ctqA-1crrA Transforming Protein P21/H-Ras 1ctq [ A ] 1crr [ A ] 166
va1qraA-1crqA Transforming Protein P21/H-Ras 1qra [ A ] 1crq [ A ] 166

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Copyright 1995-2005 M. Gerstein, W. Krebs, S. Flores, N. Echols, and others
Email: Mark.Gerstein _at_ yale.edu