[sharp-discuss] SHARP-ARP/wARP and CCP4-ARP/wARP

Clemens Vonrhein vonrhein at globalphasing.com
Wed Dec 15 11:57:56 GMT 2004


Dear Cholien,

what resolution are you working at? Seems to be fairly low
(Observations/parameters ratio is rather poor). Also, both versions of
ARP/wARP are not really building anything. So my guess is that your
density is rather poor (or too low resolution, i.e. below about
2.5-2.7). No matter what version you are using: this will not work -
and a discussion about R/Rfree values is a bit futile.

The SHARP/autoSHARP version of calling ARP/wARP is maybe a bit more
tuned towards SHARP and the availability of trustworthy experimental
phases. It was first developed for ARP/wARP 5.X and 6.0.

ARP/wARP 6.1.1 has some nice new features, so it is definitely worth
trying both. In easy cases (2A MAD data with a phasing power of 2.0)
both will work equally well I guess. It is the borderline cases, where
you might have greater control using the CCP4 interface to ARP/wARP.

Hope that helps.


Cheers

Clemens


On Wed, Dec 15, 2004 at 07:41:04PM +0800, ???? wrote:
> Dear Sir,
> 
> I get eden_flat_XX.Ypc.mtz file from SHARP then use the eden_flat_XX.Ypc.mtz to CCP4/ARP/wARP. The results from SHARP-ARP/wARP and CCP4-ARP/wARP is very different. I don't know how to explain. The result from SHARP-ARP/wARP that R value low stage by stage and Rfree range around: 0.304 ~0.330. But the result from CCP4-ARP/wARP that R value low stage by stage but the Rfree increase even Rfree value is very high. Could you tell me what's wrong?
> 
> Thanks in advanced.
> 
> cholien.
> 
> (1)SHARP-ARP/wARP
> 24792 reflections (   99.25 % complete ) and 0 restraint used, for refining 5891 atoms.
>   Observations/parameters ratio is 1.05 (~1.05 with restraints).
> 
> 
> --------------------------------------------------------------------------------
> 
> 
>   Starting model : R = 0.322 (Rfree = 0.319)
> 
> 
> --------------------------------------------------------------------------------
> 
> 
>   Cycle   1 : After refmac [0.50|1.00]:   R = 0.283 (Rfree = 0.304) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.
>   Cycle   2 : After refmac [0.50|1.00]:   R = 0.269 (Rfree = 0.305) 
>               Found 38 (38 requested) and removed 21 (21 requested) atoms.
>   Cycle   3 : After refmac [0.50|1.00]:   R = 0.259 (Rfree = 0.308) 
>               Found 38 (38 requested) and removed 22 (22 requested) atoms.
>   Cycle   4 : After refmac [0.50|1.00]:   R = 0.253 (Rfree = 0.309) 
>               Found 39 (39 requested) and removed 25 (25 requested) atoms.
>   Cycle   5 : After refmac [0.50|1.00]:   R = 0.246 (Rfree = 0.313) 
>               Found 39 (39 requested) and removed 26 (26 requested) atoms.
>   Cycle   6 : After refmac [0.50|1.00]:   R = 0.240 (Rfree = 0.309) 
>               Found 39 (39 requested) and removed 28 (28 requested) atoms.
>   Cycle   7 : After refmac [0.50|1.00]:   R = 0.236 (Rfree = 0.310) 
>               Found 39 (39 requested) and removed 29 (29 requested) atoms.
>   Cycle   8 : After refmac [0.50|1.00]:   R = 0.234 (Rfree = 0.313) 
>               Found 39 (39 requested) and removed 30 (30 requested) atoms.
>   Cycle   9 : After refmac [0.50|1.00]:   R = 0.230 (Rfree = 0.309) 
>               Found 39 (39 requested) and removed 31 (31 requested) atoms.
>   Cycle  10 : After refmac [0.50|1.00]:   R = 0.228 (Rfree = 0.314) 
>               Found 39 (39 requested) and removed 31 (31 requested) atoms.
> 
> 
> --------------------------------------------------------------------------------
> 
> 
>   Building Cycle 1
>    Round 1 : 74 peptides in 16 chains.
>    Round 2 : 67 peptides in 14 chains.
>      Chains 7, Residues 33 [out of 668], Connectivity Index 0.58
> 
> 
> --------------------------------------------------------------------------------
> 
> 
>   Cycle  11 : After refmac [0.60|0.95]:   R = 0.252 (Rfree = 0.333) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  12 : After refmac [0.72|0.95]:   R = 0.238 (Rfree = 0.325) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  13 : After refmac [0.86|0.95]:   R = 0.232 (Rfree = 0.326) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  14 : After refmac [0.95|0.95]:   R = 0.229 (Rfree = 0.322) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  15 : After refmac [0.95|0.95]:   R = 0.237 (Rfree = 0.326) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  16 : After refmac [0.95|0.95]:   R = 0.235 (Rfree = 0.327) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.
>   Cycle  17 : After refmac [0.95|0.95]:   R = 0.234 (Rfree = 0.326) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.
>   Cycle  18 : After refmac [0.95|0.95]:   R = 0.241 (Rfree = 0.331) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.
>   Cycle  19 : After refmac [0.95|0.95]:   R = 0.245 (Rfree = 0.331) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.
>   Cycle  20 : After refmac [0.95|0.95]:   R = 0.241 (Rfree = 0.329) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.
> 
> 
> --------------------------------------------------------------------------------
> 
> 
>   Building Cycle 2
>    Round 1 : 65 peptides in 15 chains.
>    Round 2 : 65 peptides in 14 chains.
>      Chains 7, Residues 31 [out of 668], Connectivity Index 0.57
> 
> 
> --------------------------------------------------------------------------------
> 
> 
>  
> Note:  Switching side-chain docking ON for next building cycle.
>  
> 
> 
>   Cycle  21 : After refmac [0.95|0.95]:   R = 0.258 (Rfree = 0.338) 
>               Found 36 (36 requested) and removed 18 (18 requested) atoms.
>   Cycle  22 : After refmac [0.95|0.95]:   R = 0.254 (Rfree = 0.335) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  23 : After refmac [0.95|0.95]:   R = 0.257 (Rfree = 0.340) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  24 : After refmac [0.95|0.95]:   R = 0.246 (Rfree = 0.335) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  25 : After refmac [0.95|0.95]:   R = 0.255 (Rfree = 0.335) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  26 : After refmac [0.95|0.95]:   R = 0.244 (Rfree = 0.334) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  27 : After refmac [0.95|0.95]:   R = 0.245 (Rfree = 0.329) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  28 : After refmac [0.95|0.95]:   R = 0.254 (Rfree = 0.334) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  29 : After refmac [0.95|0.95]:   R = 0.250 (Rfree = 0.328) 
>               Found 37 (37 requested) and removed 18 (18 requested) atoms.
>   Cycle  30 : After refmac [0.95|0.95]:   R = 0.241 (Rfree = 0.330) 
>               Found 38 (38 requested) and removed 19 (19 requested) atoms.(2)CCP4-ARP/wARP 24771 reflections ( 99.25 % complete ), for refining 6148 atoms.   Observations/parameters ratio is 1.01------------------------------------------------------ Starting model:  R = 0.405 (Rfree = 0.390). ------------------------------------------------------  Cycle 0:   After refmac, R = 0.314 (Rfree = 0.427).             Found 39 (39 requested) and removed  36 (36 requested) atoms.------------------------------------------------------ Building Cycle 0   Round 1: 41 peptides in 9 chains.   Round 2: 28 peptides in 6 chains.  Chains 6, Residues 22, Connectivity Index 0.57------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  120 restraints for refining 5989 atoms.   Observations/parameters ratio is 1.03------------------------------------------------------  Cycle 1:   After refmac, R = 0.301 (Rfree = 0.461).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 2:   After refmac, R = 0.285 (Rfree = 0.481).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 3:   After refmac, R = 0.275 (Rfree = 0.494).             Found 39 (39 requested) and removed  19 (19 requested) atoms.  Cycle 4:   After refmac, R = 0.267 (Rfree = 0.502).             Found 32 (39 requested) and removed  19 (19 requested) atoms.  Cycle 5:   After refmac, R = 0.262 (Rfree = 0.509).             Found 22 (39 requested) and removed  19 (19 requested) atoms.------------------------------------------------------ Building Cycle 1   Round 1: 47 peptides in 11 chains.   Round 2: 43 peptides in 10 chains.  Chains 3, Residues 13, Connectivity Index 0.53------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  69 restraints for refining 5956 atoms.   Observations/parameters ratio is 1.04------------------------------------------------------  Cycle 6:   After refmac, R = 0.265 (Rfree = 0.521).             Found 36 (38 requested) and removed  19 (19 requested) atoms.  Cycle 7:   After refmac, R = 0.260 (Rfree = 0.529).             Found 32 (38 requested) and removed  19 (19 requested) atoms.  Cycle 8:   After refmac, R = 0.256 (Rfree = 0.537).             Found 22 (38 requested) and removed  19 (19 requested) atoms.  Cycle 9:   After refmac, R = 0.254 (Rfree = 0.545).             Found 25 (38 requested) and removed  19 (19 requested) atoms.  Cycle 10:  After refmac, R = 0.252 (Rfree = 0.550).             Found 23 (38 requested) and removed  19 (19 requested) atoms.------------------------------------------------------ Building Cycle 2   Round 1: 36 peptides in 9 chains.   Round 2: 37 peptides in 8 chains.  Chains 3, Residues 15, Connectivity Index 0.57------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  75 restraints for refining 5939 atoms.   Observations/parameters ratio is 1.04------------------------------------------------------  Cycle 11:  After refmac, R = 0.256 (Rfree = 0.557).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 12:  After refmac, R = 0.253 (Rfree = 0.562).             Found 14 (38 requested) and removed  19 (19 requested) atoms.  Cycle 13:  After refmac, R = 0.256 (Rfree = 0.559).             Found 21 (38 requested) and removed  19 (19 requested) atoms.  Cycle 14:  After refmac, R = 0.253 (Rfree = 0.565).             Found 23 (38 requested) and removed  19 (19 requested) atoms.  Cycle 15:  After refmac, R = 0.251 (Rfree = 0.571).             Found 21 (38 requested) and removed  19 (19 requested) atoms.------------------------------------------------------ Building Cycle 3   Round 1: 42 peptides in 10 chains.   Round 2: 43 peptides in 9 chains.  Chains 6, Residues 29, Connectivity Index 0.58------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  113 restraints for refining 5927 atoms.   Observations/parameters ratio is 1.04------------------------------------------------------  Cycle 16:  After refmac, R = 0.256 (Rfree = 0.577).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 17:  After refmac, R = 0.254 (Rfree = 0.580).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 18:  After refmac, R = 0.253 (Rfree = 0.585).             Found 27 (38 requested) and removed  19 (19 requested) atoms.  Cycle 19:  After refmac, R = 0.251 (Rfree = 0.588).             Found 21 (38 requested) and removed  19 (19 requested) atoms.  Cycle 20:  After refmac, R = 0.251 (Rfree = 0.592).             Found 26 (38 requested) and removed  19 (19 requested) atoms.------------------------------------------------------ Building Cycle 4   Round 1: 31 peptides in 7 chains.   Round 2: 33 peptides in 7 chains.  Chains 5, Residues 23, Connectivity Index 0.58------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  99 restraints for refining 5952 atoms.   Observations/parameters ratio is 1.04------------------------------------------------------  Cycle 21:  After refmac, R = 0.253 (Rfree = 0.590).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 22:  After refmac, R = 0.252 (Rfree = 0.594).             Found 35 (38 requested) and removed  19 (19 requested) atoms.  Cycle 23:  After refmac, R = 0.251 (Rfree = 0.596).             Found 27 (38 requested) and removed  19 (19 requested) atoms.  Cycle 24:  After refmac, R = 0.250 (Rfree = 0.597).             Found 22 (38 requested) and removed  19 (19 requested) atoms.  Cycle 25:  After refmac, R = 0.250 (Rfree = 0.599).             Found 21 (38 requested) and removed  19 (19 requested) atoms.------------------------------------------------------ Building Cycle 5   Round 1: 45 peptides in 10 chains.   Round 2: 46 peptides in 10 chains.  Chains 5, Residues 21, Connectivity Index 0.57------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  117 restraints for refining 5971 atoms.   Observations/parameters ratio is 1.04------------------------------------------------------  Cycle 26:  After refmac, R = 0.253 (Rfree = 0.603).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 27:  After refmac, R = 0.251 (Rfree = 0.606).             Found 26 (38 requested) and removed  19 (19 requested) atoms.  Cycle 28:  After refmac, R = 0.251 (Rfree = 0.609).             Found 25 (38 requested) and removed  19 (19 requested) atoms.  Cycle 29:  After refmac, R = 0.250 (Rfree = 0.611).             Found 26 (38 requested) and removed  19 (19 requested) atoms.  Cycle 30:  After refmac, R = 0.254 (Rfree = 0.601).             Found 5 (38 requested) and removed  19 (19 requested) atoms.------------------------------------------------------ Building Cycle 6   Round 1: 44 peptides in 10 chains.   Round 2: 46 peptides in 9 chains.  Chains 7, Residues 32, Connectivity Index 0.61------------------------------------------------------   24771 reflections ( 99.25 % complete ) and  168 restraints for refining 5960 atoms.   Observations/parameters ratio is 1.04------------------------------------------------------  Cycle 31:  After refmac, R = 0.258 (Rfree = 0.611).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 32:  After refmac, R = 0.255 (Rfree = 0.618).             Found 38 (38 requested) and removed  19 (19 requested) atoms.  Cycle 33:  After refmac, R = 0.255 (Rfree = 0.622).             Found 18 (38 requested) and removed  19 (19 requested) atoms.  Cycle 34:  After refmac, R = 0.255 (Rfree = 0.625).             Found 18 (38 requested) and removed  19 (19 requested) atoms.  Cycle 35:  After refmac, R = 0.256 (Rfree = 0.630).             Found 18 (38 requested) and removed  19 (19 requested) atoms.-----------------------------------------------------

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-- 

***************************************************************
* Clemens Vonrhein, Ph.D.     vonrhein AT GlobalPhasing DOT com
*
*  Global Phasing Ltd.
*  Sheraton House, Castle Park 
*  Cambridge CB3 0AX, UK
*--------------------------------------------------------------
* BUSTER Development Group      (http://www.globalphasing.com)
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