Contacts of the helix formed by residues 284 - 288 (chain A) in PDB entry 2ZT5
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 284 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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282A PRO 3.9 0.6 - - - -
283A ARG* 1.3 80.2 + - - +
285A GLY* 1.3 67.0 + - - +
286A LEU 3.4 0.5 + - - -
287A ILE* 3.1 42.1 + - - +
288A ARG* 4.1 21.1 + - - +
399A TYR* 3.4 35.8 + - - +
532A TYR* 5.2 0.5 - - - -
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Residues in contact with GLY 285 (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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71A GLU* 5.0 7.6 - - - -
80A TYR* 5.2 4.0 - - - -
94A TYR* 3.4 38.8 + - - -
283A ARG* 3.7 2.6 - - - +
284A SER* 1.3 77.2 - - - +
286A LEU* 1.3 60.8 + - - -
287A ILE 3.1 1.1 + - - -
288A ARG 3.5 14.2 + - - +
399A TYR* 3.8 6.1 + - - -
532A TYR* 5.8 1.3 - - - -
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Residues in contact with LEU 286 (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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80A TYR* 3.8 42.2 + - + -
94A TYR* 4.1 27.8 - - + -
96A PHE* 3.9 32.8 - - + -
284A SER 3.4 0.6 + - - -
285A GLY* 1.3 71.6 - - - -
287A ILE* 1.3 66.1 + - - +
288A ARG 3.2 0.8 + - - -
289A VAL* 3.9 19.8 - - + +
528A GLY* 4.7 13.0 - - - +
529A ARG* 4.3 7.4 + - - +
531A MET* 5.6 1.1 - - - -
532A TYR* 4.2 26.3 - - + -
535A PHE* 4.3 15.3 - - + -
1101A B4P 4.2 9.4 - - - -
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Residues in contact with ILE 287 (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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284A SER* 3.1 30.4 + - - +
286A LEU* 1.3 80.3 - - - +
288A ARG* 1.3 64.2 + - + +
289A VAL 4.0 0.4 - - - -
399A TYR* 4.0 15.3 - - + -
402A ILE* 3.2 44.4 - - + -
529A ARG* 2.7 51.5 + - + +
532A TYR* 3.3 39.9 - - + -
533A THR* 5.2 0.7 - - - +
1101A B4P 3.6 1.9 + - - -
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Residues in contact with ARG 288 (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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92A GLY* 3.6 4.3 - - - -
159A ARG* 2.8 16.1 - - - +
162A HIS* 3.1 29.8 + - - -
279A GLU* 3.2 35.5 + - - +
281A SER 5.2 3.1 - - - -
282A PRO* 3.2 35.5 - - + +
283A ARG 4.6 0.7 - - - +
284A SER* 4.1 23.1 + - - +
285A GLY 3.5 9.0 + - - +
286A LEU 3.2 0.2 - - - -
287A ILE* 1.3 87.8 - - - +
289A VAL* 1.3 63.3 + - - +
402A ILE* 6.3 1.0 - - - +
529A ARG* 3.9 7.7 - - - +
1101A B4P 2.5 50.1 + - - -
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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