Contacts of the helix formed by residues 376 - 384 (chain E) in PDB entry 3TNP
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with VAL 376 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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308E ALA 5.2 1.6 - - - +
309E ASP 2.9 21.7 + - - +
310E SER* 3.8 7.4 - - - -
311E PHE* 4.3 7.2 - - + -
352E ALA* 3.6 43.7 - - + +
353E LEU* 4.1 25.4 - - + +
375E ASP* 1.3 72.9 + - - +
377E GLN* 1.3 64.5 + - - +
379E PHE* 3.2 6.6 - - - +
380E GLU* 2.9 46.0 + - + +
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Residues in contact with GLN 377 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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309E ASP 4.6 1.1 + - - +
375E ASP* 3.0 11.6 + - - +
376E VAL* 1.3 81.0 - - - +
378E ALA* 1.3 61.0 + - - +
380E GLU* 3.2 14.9 + - - +
381E ARG* 2.9 46.1 + - - +
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Residues in contact with ALA 378 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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374E MET* 4.3 7.0 - - + -
375E ASP* 3.0 25.1 + - + +
377E GLN* 1.3 75.3 - - - +
379E PHE* 1.3 63.5 + - - +
381E ARG* 3.2 33.3 + - - +
382E LEU* 3.1 26.3 + - - +
278F THR* 3.5 21.1 - - + +
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Residues in contact with PHE 379 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
275E LEU* 3.6 37.9 - - + -
278E LEU* 4.8 1.8 - - + -
286E VAL* 4.2 13.0 - - + -
311E PHE* 4.5 8.5 - + - -
353E LEU* 4.0 16.6 - - + -
374E MET* 3.7 23.6 - - + +
375E ASP 3.1 14.5 + - - +
376E VAL* 3.2 13.2 - - - +
378E ALA* 1.3 77.8 - - - +
380E GLU* 1.3 64.9 + - + +
382E LEU* 3.3 3.8 + - - +
383E LEU* 3.0 47.3 + - + +
384E GLY 3.8 18.2 - - - -
386E CYS* 4.1 18.2 - - + -
389E ILE* 4.3 11.0 - - + -
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Residues in contact with GLU 380 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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353E LEU 4.4 6.8 - - - +
376E VAL* 2.9 34.4 + - + +
377E GLN* 3.2 15.1 + - - +
379E PHE* 1.3 78.6 - - + +
381E ARG* 1.3 65.1 + - - +
384E GLY* 2.8 45.1 + - - +
385E PRO* 3.8 25.6 - - + +
386E CYS 4.4 3.7 + - - +
285F LYS* 4.5 2.1 - - - +
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Residues in contact with ARG 381 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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375E ASP* 5.1 1.0 + - - -
377E GLN* 2.9 24.1 + - - +
378E ALA* 3.2 33.9 + - - +
380E GLU* 1.3 77.1 - - - +
382E LEU* 1.3 57.3 + - - +
276F ASP* 4.6 0.6 + - - -
278F THR* 2.7 50.5 + - - +
279F LYS* 3.7 32.3 - - - +
284F LEU* 3.3 19.1 - - + +
285F LYS* 3.0 23.2 + - - +
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Residues in contact with LEU 382 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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285E LYS* 3.8 39.1 + - + +
286E VAL* 4.7 3.8 - - + -
289E VAL* 4.1 7.9 - - + -
374E MET* 4.3 9.4 - - + -
378E ALA 3.1 16.4 + - - +
379E PHE* 3.6 6.3 - - - +
381E ARG* 1.3 76.9 - - - +
383E LEU* 1.3 75.4 + - + +
277F LEU 3.7 12.6 - - - +
278F THR* 4.0 23.3 - - + -
283F ASN* 3.6 38.2 - - - +
284F LEU* 3.8 4.3 - - + +
285F LYS* 3.2 20.4 + - - +
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Residues in contact with LEU 383 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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278E LEU* 3.8 23.1 - - + -
282E GLU* 3.6 42.3 - - + +
285E LYS* 4.9 7.9 - - + -
286E VAL* 3.6 31.2 - - + -
379E PHE* 3.0 22.2 + - + +
382E LEU* 1.3 96.3 - - + +
384E GLY* 1.3 66.0 + - - +
388E GLU* 6.0 1.4 - - - +
389E ILE* 4.1 18.0 - - + +
392E ARG* 5.7 0.2 + - - -
285F LYS* 3.4 27.3 + - - -
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Residues in contact with GLY 384 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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379E PHE* 3.8 9.0 - - - -
380E GLU* 2.8 38.8 + - - +
382E LEU 3.9 0.2 - - - -
383E LEU* 1.3 75.4 - - - +
385E PRO* 1.3 77.8 - - - +
386E CYS 3.5 1.4 + - - -
388E GLU* 5.3 1.1 - - - -
389E ILE* 4.3 0.5 - - - +
285F LYS* 4.2 13.9 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il