Contacts of the helix formed by residues 324 - 332 (chain A) in PDB entry 4FE1
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 SER 324 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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194A GLU* 3.5 12.2 + - - -
316A ARG* 3.9 22.8 - - - +
322A GLY 4.2 0.2 + - - -
323A HIS* 1.3 72.0 + - - +
325A LEU* 1.3 65.3 + - - +
326A LYS* 3.7 13.0 + - - +
327A GLU* 3.2 27.1 + - - +
328A ILE* 3.1 23.0 + - - +
345A TYR* 5.7 0.5 + - - -
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Residues in contact with LEU 325 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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193A VAL* 3.6 29.8 - - + -
194A GLU* 3.5 20.1 + - + +
197A LEU* 3.8 23.6 - - + -
315A TYR* 3.4 35.2 - - + +
323A HIS 3.9 2.2 + - - -
324A SER* 1.3 70.5 + - - +
326A LYS* 1.3 56.6 + - - +
328A ILE* 3.3 13.2 + - + +
329A LEU* 2.9 37.9 + - + +
345A TYR* 3.4 15.7 - - + -
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Residues in contact with LYS 326 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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324A SER* 3.3 8.8 + - - +
325A LEU* 1.3 79.5 - - - +
327A GLU* 1.3 59.0 + - + +
329A LEU* 3.5 2.9 + - - +
330A GLU* 2.9 55.6 + - - +
345A TYR* 3.4 47.2 - - + -
346A GLU* 3.1 29.8 - - + +
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Residues in contact with GLU 327 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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316A ARG* 4.4 13.4 + - - -
324A SER* 3.2 29.5 + - - +
326A LYS* 1.3 76.3 - - + +
328A ILE* 1.3 67.9 + - + +
330A GLU* 3.3 11.8 + - - +
331A ALA* 2.9 25.5 + - - +
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Residues in contact with ILE 328 (chain A).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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314A MET* 3.9 19.5 - - + -
315A TYR* 4.3 7.0 - - + -
323A HIS* 3.7 36.1 - - + +
324A SER 3.1 14.4 + - - +
325A LEU* 3.6 16.6 - - + +
327A GLU* 1.3 77.1 - - + +
329A LEU* 1.3 66.8 + - + +
331A ALA* 3.1 9.7 + - - +
332A HIS* 3.0 42.8 + - + +
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Residues in contact with LEU 329 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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325A LEU* 2.9 24.1 + - + +
326A LYS 3.6 4.5 - - - +
328A ILE* 1.3 81.4 - - + +
330A GLU* 1.3 61.6 - - + +
331A ALA 3.2 0.3 + - - -
332A HIS* 3.2 12.9 + - - +
341A HIS* 3.4 52.4 + - + +
344A LEU* 4.1 9.6 - - + -
345A TYR* 3.5 47.1 - - + +
348A LEU* 6.2 2.2 - - + -
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Residues in contact with GLU 330 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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326A LYS* 2.9 51.2 + - + +
327A GLU* 3.3 10.5 + - - +
329A LEU* 1.3 75.6 - - + +
331A ALA* 1.3 60.1 + - - +
332A HIS 3.3 0.8 + - - -
333A LYS* 4.1 19.1 - - - +
339A ALA 4.8 2.2 - - - +
342A LYS* 3.8 46.4 + - + +
343A GLY 5.2 0.6 + - - -
346A GLU* 5.1 1.6 - - - +
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Residues in contact with ALA 331 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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327A GLU 2.9 17.1 + - - +
328A ILE* 3.1 8.0 + - - +
330A GLU* 1.3 78.0 - - - +
332A HIS* 1.3 65.5 + - + +
333A LYS* 3.3 11.3 + - - +
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Residues in contact with HIS 332 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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328A ILE* 3.0 39.6 + - + +
329A LEU* 3.2 5.6 + - - +
331A ALA* 1.3 81.9 - - + +
333A LYS* 1.3 58.3 + - - +
340A GLY* 3.6 1.7 - - - -
341A HIS* 3.4 47.5 + + + +
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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