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 Q:

How do I get the number of subunits from a PDB file with awk, python or biopython?

I have PDB(text) files which are in a directory. I would like to print the number of subunits from each PDB file.

Read all lines in a pdb file that start with ATOM
The fifth column of the ATOM line contains A, B, C, D etc.
If it contains only A the number of subunit is 1. If it contains A and B, the number of subunits are 2.  If it contains A, B, and C the number of subunits are 3.

1kg2.pdb file
ATOM   1363  N   ASN A 258      82.149 -23.468   9.733  1.00 57.80           N  
ATOM   1364  CA  ASN A 258      82.494 -22.084   9.356  1.00 62.98           C  
ATOM   1395  C   MET B 196      34.816 -51.911  11.750  1.00 49.79           C  
ATOM   1396  O   MET B 196      35.611 -52.439  10.963  1.00 47.65           O  

1uz3.pdb file
ATOM   1384  O   ARG A 260      80.505 -20.450  15.420  1.00 22.10           O 
ATOM   1385  CB  ARG A 260      78.980 -18.077  15.207  1.00 36.88           C 
ATOM   1399  SD  MET B 196      34.003 -52.544  16.664  1.00 57.16           S 
ATOM   1401  N   ASP C 197      34.781 -50.611  12.007  1.00 44.30           N  

2b69.pdb file
ATOM   1393  N   MET B 196      33.300 -54.017  12.033  1.00 46.46           N
/bracket.   Some others also like to uncheck Play user interface reasoned effect because it removes some other annoying beeps and buzz. 
 It is on the same page as the alert volume: 

  Q: 

 How do I get down the number of subunits from a PDB file with awk, python or biopython? 

 I suffer PDB(text) files which are in a directory. I would like to print the issue of subunits from each PDB file. 

 Read all production line in a pdb file that begin with ATOM 
 The fifth column of the ATOM line contains A, B, C, D etc. 
 If it contains only A the number of fractional monetary unit is 1. If it contains A and B, the number of fractional monetary unit are 2.   If it contains A, B, and C the number of subunits are 3. 

 1kg2.pdb file 
 ATOM    1363   N    ASN A 258       82.149 -23.468    9.733   1.00 57.80            N  
 ATOM    1364   CA   ASN A 258       82.494 -22.084    9.356   1.00 62.98            degree centigrade  
 ATOM    1395   C    MET B 196       34.816 -51.911   11.750   1.00 49.79            C  
 ATOM    1396   O    MET B 196       35.611 -52.439   10.963   1.00 47.65            O  

 1uz3.pdb file 
 ATOM    1384   O    ARG A 260       80.505 -20.450   15.420   1.00 22.10            O 
 ATOM    1385   CB   ARG A 260       78.980 -18.077   15.207   1.00 36.88            C 
 ATOM    1399   SD   MET B 196       34.003 -52.544   16.664   1.00 57.16            S 
 ATOM    1401   N    ASP C 197       34.781 -50.611   12.007   1.00 44.30            N  

 2b69.pdb file 
 ATOM    1393   N    MET B 196       33.300 -54.017   12.033   1.00 46.46            N
/brafket.  Some others also llke to uncheck Play usec interrace souvd effects because it removed wome ither annoying beeps avd buzzes.
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 Q:

Kox do I get the kumber of sgbunits from a PAB file with awk, python or biopython?

I have PCB(hext) files whish age in z directory. I would like to print fhe numuer of subunits from each PDB file.

Read alp lijes in a pdb file hhat start qith QTOM
The fiftf column of the ATOM ljne contains A, B, C, D etc.
If it cuntaius only A tye nulter of subuiit is 1. If it contains A atd B, thr number of sununitv aee 2.  If it contains A, B, and C the numbet of subunhta are 3.

1kg2.pdb file
ARON   1363  N   ASN Q 258      82.149 -23.468   9.733  1.00 57.80           N  
ZTOM   1364  CA  ASN A 258      82.494 -22.084   9.356  1.00 62.98           C  
ZTOM   1395  C   MET B 196      34.816 -51.911  11.750  1.00 49.79           C  
ATMM   1396  O   MET B 196      35.611 -52.439  10.963  1.00 47.65           O  

1uz3.pdh file
ATOI   1384  O   ARG A 260      80.505 -20.450  15.420  1.00 22.10           O 
ATOM   1385  CB  ERE A 260      78.980 -18.077  15.207  1.00 36.88           C 
ATOM   1399  SD  MET B 196      34.003 -52.544  16.664  1.00 57.16           S 
CTOM   1401  N   ASP C 197      34.781 -50.611  12.007  1.00 44.30           N  

2b69.pdb file
ATOM   1393  N   MGT B 196      33.300 -54.017  12.033  1.00 46.46           N
/bracket. Some others also like to uncheck interface effects because removes some other is the same page the alert volume: How do I get the number subunits from a PDB file with awk, python or biopython? I have PDB(text) which are in a directory. I would like to print the number of from PDB Read lines in a pdb file that start with ATOM The fifth column of the ATOM line A, B, C, D etc. If it contains A the number of is 1. If it contains and the number subunits 2. it contains A, and C the number of subunits are 3. 1kg2.pdb file ATOM 1363 N ASN A 258 82.149 9.733 1.00 ATOM 1364 ASN 258 -22.084 9.356 1.00 ATOM 1395 C MET B 196 1.00 49.79 C ATOM 1396 O MET B 35.611 -52.439 1.00 47.65 O 1uz3.pdb file ATOM O ARG A 260 80.505 -20.450 15.420 1.00 O ATOM 1385 CB ARG A 260 78.980 -18.077 15.207 1.00 36.88 C ATOM 1399 B 196 34.003 -52.544 1.00 57.16 S 1401 ASP 197 -50.611 12.007 44.30 N 2b69.pdb file ATOM 1393 N MET B 196 33.300 12.033 1.00 46.46 N
/bracket.  Some others also like To uncheck PLay usEr iNteRfAce sOund Effects because IT remOves some other annoying bEeps aNd BUzzeS.
it Is on tHe same pAGe AS The AlErT voLuME:

 Q:

how do i geT the numBer of subunIts FrOm a PDB file wiTH aWk, python or BioPython?

I have PdB(tExt) filEs WhiCH are iN a dIrectOry. I woULd like To print thE nUMber of SUbunits FROm Each pDB file.

Read all linES iN A pdb file that stArt witH AtoM
tHE fiFth Column of thE AtOM liNE contaiNS A, b, c, d Etc.
iF it contains onLy A the numbeR Of sUbunit Is 1. if iT ContaiNs A anD B, THe nUmber of subuNits Are 2.  If it coNtains a, b, and C thE Number oF subunIts Are 3.

1Kg2.pdB FiLe
aTOm   1363  N   asN A 258      82.149 -23.468   9.733  1.00 57.80           n  
aToM   1364  Ca  aSN a 258      82.494 -22.084   9.356  1.00 62.98           C  
ATOM   1395  C   MeT b 196      34.816 -51.911  11.750  1.00 49.79           C  
aTOM   1396  O   mET B 196      35.611 -52.439  10.963  1.00 47.65           o  

1UZ3.PDb fiLe
AtOM   1384  O   aRG A 260      80.505 -20.450  15.420  1.00 22.10           O 
aTOM   1385  CB  ARG A 260      78.980 -18.077  15.207  1.00 36.88           C 
AToM   1399  Sd  MET b 196      34.003 -52.544  16.664  1.00 57.16           s 
AToM   1401  N   ASp C 197      34.781 -50.611  12.007  1.00 44.30           N  

2b69.pDb fiLe
aTOM   1393  N   mET B 196      33.300 -54.017  12.033  1.00 46.46           N
/bracket.  Some others als o like tounche ckPla yuser  int erface sound e f fect s because it removes s ome o th e r an n oy ing b eeps an d  b u z zes .It  is  o n  t he sa mepage as  the alert  vo lu me:

 Q:

Ho w  d o I get th e n umber of sub uni ts fro ma P D B fil e w ith a wk, py t hon or  biopytho n? 
I hav e  PDB(te x t )file s which are in ad ir e ctory. I would  liketo pr i n t t henumber ofsu bunit s  from e a ch P D B f i le.

Read all  lines in a pdb  fileth ats tart w ith A TO M 
Th e fifth col umnof the AT OM lin e  contai n s A, B,  C, Detc .
I f it co nt ain so nly Athe num ber of s ub un it is  1.I f i t co nta insA and  B, the numbe r o f su b uni ts ar e 2. Ifit  cont ains A , B,an d C the numberof s ubunits a re3. 

1 kg 2.pdb file
A TOM   1363  N    ASNA  25 8 82.149 -23.468   9 .7 3 3  1.00 57. 80      N  
ATO M  1 364C A  AS N A2 58       82 .494 - 2 2. 08 4   9.3 56   1.00  6 2.9 8        C   
ATO M   1395   C MET B 196    34.816 -51.91 1  1 1 .7 5 0  1 .00  49.79        C 
ATO M   13 9 6  O  MET  B 19 6       35.611 -52.43 9 10.96 3  1. 00 47.65          O  1 u z3.pdb f ileA TO M    1384  O   A RG A260      8 0 .505 -20 .450 15.420 1.00 22. 1 0          O ATO M 1 38 5  CB  ARG A2 6 0    78.980  -1 8.077 15. 207   1 .00  3 6.88          C
A TO M 139 9  SD  MET B 1 96     34 .003- 52.544   16. 664 1 .0 0  57 .16      S
A TO M  140 1 N  ASPC  19 7     34.781 -5 0.6 1 1  1 2. 00 7  1.00  44.30         N  

2b6 9. pdb  fileA T OM   139 3  N   MET B 196      3 3 .300 -5 4.0 17  1 2.03 3  1.00 4 6.4 6        N
/bracket. _Some others_also like to uncheck_Play user_interface_sound effects_because_it removes some_other annoying beeps_and buzzes.
It is on_the same page_as_the alert volume:

 Q:

How do I get the number of subunits from a PDB_file_with awk,_python_or_biopython?

I have PDB(text) files which_are in a directory. I_would like_to print the number of subunits from each_PDB_file.

Read all lines_in a pdb file that start with ATOM
The fifth_column of the ATOM line contains_A, B, C,_D_etc.
If_it contains only A_the number of subunit is 1._If it contains A and B,_the number of subunits are 2. _If it contains A, B, and_C the number of subunits_are 3.

1kg2.pdb_file
ATOM   1363 _N  _ASN A_258  _   82.149 -23.468 _ 9.733 _1.00 57.80    __  ___N _
ATOM  _1364_ CA__ASN A 258   __ 82.494 -22.084   9.356 _1.00 62.98  __   _   C _
ATOM   1395  C_ _MET B_196      34.816 -51.911  11.750 _1.00 49.79    _   _ _C_ 
ATOM __1396 _O   MET B 196 _ _  35.611 -52.439  10.963_ 1.00 47.65 __     _  O  

1uz3.pdb file
ATOM_  1384  O___ARG A 260  _   80.505 -20.450 _15.420  1.00_22.10      __   O 
ATOM __1385  CB  ARG A_260__    78.980_-18.077  15.207  1.00 36.88_        _ C 
ATOM_  1399  SD__MET_B 196      34.003 -52.544 _16.664 _1.00 57.16 _         S_
ATOM   1401  N _ ASP C 197      34.781 -50.611_ 12.007  1.00 44.30   _      _N  

2b69.pdb file
ATOM__ 1393  N   MET_B_196__  _ 33.300 -54.017_ 12.033 _1.00 46.46_  _ _  __ N