Contacts of the helix formed by residues 297 - 300 (chain G) in PDB entry 3SZ9
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 ASN 297 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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110G ASN* 4.5 0.9 - - - +
112G LYS* 3.0 31.7 + - - +
113G PRO* 5.9 1.1 - - - -
116G ILE* 6.0 1.7 - - - +
169G ASN* 3.1 20.8 + - - +
170G PHE* 3.6 10.1 - - + -
295G PHE 3.3 0.6 + - - -
296G PHE* 1.3 92.5 - - + +
298G GLN* 1.3 83.3 + - - +
300G GLN* 2.9 48.0 + - - +
301G CYS* 3.9 12.3 - - - -
329G ARG* 4.9 2.2 - - - +
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Residues in contact with GLN 298 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
110G ASN* 4.6 1.6 + - - -
112G LYS* 3.6 20.1 - - - +
113G PRO* 3.3 14.7 - - - +
295G PHE 3.3 7.8 + - - -
297G ASN* 1.3 99.3 + - - +
299G GLY* 1.3 59.2 + - - +
300G GLN* 3.1 13.3 + - - +
329G ARG* 5.1 1.7 + - - +
340G GLU 4.5 1.0 - - - +
341G GLN* 3.8 17.4 - - + -
342G GLY* 3.0 35.8 + - - +
343G PRO 3.3 21.7 + - - +
344G GLN* 3.0 34.0 + - - +
402G GLY* 3.4 8.7 - - - -
403G PRO* 3.6 7.5 - - - +
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Residues in contact with GLY 299 (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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294G LEU* 3.4 23.6 - - - -
295G PHE* 3.3 6.4 + - - +
296G PHE 2.9 8.7 + - - -
298G GLN* 1.3 77.8 - - - +
300G GLN* 1.3 54.2 + - - +
301G CYS* 3.0 15.2 + - - +
304G ALA* 4.2 7.0 - - - +
401G PHE* 3.4 22.0 - - - -
402G GLY 3.5 14.0 + - - +
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Residues in contact with GLN 300 (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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110G ASN* 5.1 7.7 + - - +
168G TRP* 3.4 36.7 - - + -
169G ASN* 3.2 14.0 + - - +
170G PHE* 3.7 0.2 - - - -
296G PHE 3.8 0.2 + - - -
297G ASN* 2.9 40.9 + - - +
298G GLN* 3.7 18.9 - - - +
299G GLY* 1.3 73.4 - - - +
301G CYS* 1.3 60.2 + - - +
343G PRO 4.6 1.0 + - - -
344G GLN* 3.2 18.7 + - - +
345G VAL* 3.0 30.1 + - - +
349G GLN* 4.8 2.6 - - - +
401G PHE* 3.4 30.8 - - + +
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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