Contacts of the helix formed by residues 345 - 352 (chain G) in PDB entry 4HHM
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 ASP 345 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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343G ALA* 3.1 10.4 - - - +
344G ALA* 1.3 72.1 + - - +
346G GLY* 1.3 56.7 + - - -
349G ALA* 3.0 36.4 + - + +
350G LEU 4.1 0.2 + - - -
353G ASP* 5.4 0.3 - - - +
109H ARG* 4.2 6.3 + - - +
113H ARG* 2.9 43.2 + - - -
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Residues in contact with GLY 346 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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343G ALA* 3.0 15.9 + - - -
344G ALA 3.1 4.6 + - - -
345G ASP* 1.3 81.9 - - - +
347G LEU* 1.3 66.6 + - - -
348G GLN* 3.3 2.9 - - - -
349G ALA* 3.2 0.9 + - - +
350G LEU* 3.1 20.3 + - - +
164H LEU* 4.8 2.9 - - - -
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Residues in contact with LEU 347 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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346G GLY* 1.3 69.9 - - - -
348G GLN* 1.3 79.6 + - + +
350G LEU* 2.9 15.1 + - + +
351G LEU* 2.9 31.4 + - + +
120H ILE* 4.2 18.2 - - + -
164H LEU* 4.0 34.0 - - + +
167H GLU* 3.9 34.5 + - + +
168H TYR* 3.7 44.4 - - + +
171H SER* 4.3 4.7 - - - +
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Residues in contact with GLN 348 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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346G GLY 3.3 1.0 - - - -
347G LEU* 1.3 93.0 - - + +
349G ALA* 1.3 64.1 + - - +
351G LEU* 3.1 30.0 + - - +
352G ALA* 3.2 14.8 + - - +
167H GLU* 5.7 2.1 - - - +
171H SER* 4.7 9.5 + - - -
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Residues in contact with ALA 349 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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345G ASP* 3.0 46.4 + - + +
346G GLY 3.2 1.8 + - - -
348G GLN* 1.3 78.5 - - - +
350G LEU* 1.3 62.3 + - - +
352G ALA* 3.3 6.6 + - - +
353G ASP* 3.2 22.7 + - - +
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Residues in contact with LEU 350 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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343G ALA* 4.4 13.2 - - + -
345G ASP* 4.1 0.8 + - - -
346G GLY 3.1 11.7 + - - +
347G LEU* 2.9 21.4 + - + +
349G ALA* 1.3 77.1 - - - +
351G LEU* 1.3 58.4 + - + +
353G ASP* 3.0 19.4 + - - +
356G ALA* 3.9 16.6 - - + -
113H ARG* 3.6 44.2 - - + +
116H LEU* 4.0 35.0 - - + -
117H ARG* 3.0 27.5 + - + -
120H ILE* 5.1 4.7 - - + -
164H LEU* 4.7 4.7 - - + -
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Residues in contact with LEU 351 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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347G LEU* 2.9 23.9 + - + +
348G GLN* 3.1 29.1 + - - +
350G LEU* 1.3 74.7 - - + +
352G ALA* 1.3 56.5 + - + +
353G ASP 3.4 0.9 - - - -
117H ARG* 3.3 32.9 + - - +
120H ILE* 3.8 39.9 - - + -
168H TYR* 3.6 27.6 - - + -
172H GLN* 5.8 1.3 - - - +
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Residues in contact with ALA 352 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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348G GLN 3.2 14.1 + - - +
349G ALA* 3.3 6.7 + - - +
350G LEU 3.1 0.6 - - - -
351G LEU* 1.3 76.5 - - + +
353G ASP* 1.3 59.3 + - - +
354G ARG* 3.7 7.1 + - - +
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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