[AMBER] AMBER Error: unable to achieve consistency

From: Asma Abro 28-FBAS/MSBI/F09 <asma.msbi28.iiu.edu.pk>
Date: Wed, 27 Jun 2012 08:40:12 +0500

Hi all,

I have a pdb structure of a ligand. (Attached with the mail)

when I run the command

reduce ligand.pdb > ligand_h.pdb

It results in "found 2 Hydrogens, standardized 2 Hydrogens". It does not
add missing Hydrogens. However I run the antechamber command:

antechamber -i ligand.pdb -fi pdb -o dock.mol2 -fo mol2 -c bcc -nc 1

the sqm.out file has the error:

QMMM: ERROR!
QMMM: Unable to achieve self consistency to the tolerances specified
QMMM: No convergence in SCF after 1000 steps.
QMMM: E = -0.7011E+06 DeltaE = 0.1272E+00 DeltaP = 0.3207E-01
QMMM: Smallest DeltaE = 0.5661E-02 DeltaP = 0.3063E-01 Step = 94

can anyone help me out with this problem?

Regards


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Received on Tue Jun 26 2012 - 21:00:03 PDT
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