Contacts of the helix formed by residues 400 - 406 (chain B) in PDB entry 2PZD
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 400 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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361B TYR* 3.6 18.4 - - - -
362B ILE 3.2 15.3 + - - -
363B GLY* 3.8 13.4 + - - -
397B ILE* 2.5 26.6 + - - -
398B LEU 3.2 2.2 + - - -
399B GLY* 1.3 81.9 - - - +
401B PRO* 1.3 68.1 - - - +
402B ALA* 3.5 0.9 + - - +
403B HIS* 3.2 15.4 + - - +
404B ARG* 2.9 27.2 + - - +
455B GLU* 5.4 0.2 - - - -
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Residues in contact with PRO 401 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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361B TYR* 3.6 30.3 - - + +
362B ILE* 3.1 21.3 - - - +
400B SER* 1.3 83.1 - - - +
402B ALA* 1.3 56.8 + - - +
404B ARG* 3.3 14.3 + - + +
405B ALA* 2.9 30.3 + - - +
452B VAL* 4.1 10.0 - - + +
453B THR 3.4 26.6 + - - +
455B GLU* 3.7 25.6 - - + +
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Residues in contact with ALA 402 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
362B ILE* 2.8 23.1 + - + +
363B GLY 4.5 0.4 - - - +
364B VAL* 3.4 31.9 - - + -
396B VAL* 4.5 1.8 - - + -
400B SER* 3.9 3.4 - - - +
401B PRO* 1.3 75.5 - - - +
403B HIS* 1.3 61.8 + - - +
405B ALA* 3.2 8.4 + - - +
407B LEU* 2.9 46.2 + - + +
452B VAL* 4.3 5.4 - - - +
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Residues in contact with HIS 403 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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398A LEU* 3.7 23.6 - - + +
396B VAL* 3.7 9.7 - - + +
397B ILE 3.5 18.8 - - - +
398B LEU* 3.8 25.2 - - + -
399B GLY* 3.0 22.6 + - - -
400B SER* 3.2 9.7 + - - +
402B ALA* 1.3 78.4 - - - +
404B ARG* 1.3 57.5 + - - +
406B GLY* 3.1 8.7 + - - -
407B LEU 4.0 0.2 - - - -
408B ARG* 3.0 55.0 + - - +
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Residues in contact with ARG 404 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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399B GLY* 3.6 24.4 + - - +
400B SER 2.9 16.2 + - - +
401B PRO* 3.8 14.1 - - - +
403B HIS* 1.3 76.3 - - + +
405B ALA* 1.3 58.4 + - - +
406B GLY 3.3 0.2 - - - -
453B THR* 5.0 3.8 + - - -
455B GLU* 2.9 34.8 + - - -
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Residues in contact with ALA 405 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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401B PRO 2.9 17.3 + - - +
402B ALA 3.2 4.9 + - - +
404B ARG* 1.3 76.8 - - - +
406B GLY* 1.3 58.5 + - - +
407B LEU 3.6 1.6 - - - +
450B LEU* 3.6 23.4 - - + +
451B TYR 3.3 29.8 + - - +
452B VAL* 3.6 21.8 - - + -
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Residues in contact with GLY 406 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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403B HIS 3.1 6.0 + - - -
404B ARG 3.3 0.8 + - - -
405B ALA* 1.3 79.7 - - - +
407B LEU* 1.3 61.9 + - - +
408B ARG* 3.2 25.3 + - - +
443B ARG* 3.0 23.7 + - - -
450B LEU* 3.6 9.7 - - - +
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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