Contacts of the helix formed by residues 302 - 307 (chain A) in PDB entry 2V5Q
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 302 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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277A VAL* 4.3 4.0 - - - +
281A LEU* 3.6 33.7 - - + +
284A LYS* 2.8 30.8 + - - +
298A GLU 3.3 6.7 + - - +
299A LEU 2.9 18.5 + - - +
300A LEU 3.2 1.2 - - - -
301A ASN* 1.3 80.8 - - - +
303A GLU* 1.3 69.1 + - - +
304A PHE* 3.1 27.7 + - - +
305A PHE* 3.0 14.9 + - + +
306A THR* 3.1 11.2 + - - -
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Residues in contact with GLU 303 (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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277A VAL* 3.9 31.3 - - + +
284A LYS* 6.1 0.9 - - - +
301A ASN 3.7 1.8 + - - -
302A ASP* 1.3 76.5 + - - +
304A PHE* 1.3 63.2 + - - +
306A THR* 3.6 9.4 - - - +
307A SER* 2.9 42.3 + - - +
169B ARG* 5.9 1.1 - - - +
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Residues in contact with PHE 304 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
150A GLU* 3.9 11.7 - - + -
153A ALA* 4.6 2.5 - - + -
154A ARG* 2.6 85.2 + - + +
157A LEU* 3.9 11.4 - - + -
241A MET* 3.8 15.0 - - + -
245A LEU* 4.9 1.6 - - + -
277A VAL* 3.4 15.3 - - + +
278A ALA* 3.8 33.4 - - + -
281A LEU* 3.7 19.7 - - + -
302A ASP* 3.1 16.4 + - + +
303A GLU* 1.3 77.6 - - - +
305A PHE* 1.3 89.5 + + - +
307A SER 3.1 4.2 - - - +
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Residues in contact with PHE 305 (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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154A ARG* 3.9 10.5 - - + -
157A LEU* 3.6 20.9 - - + -
158A ARG* 3.3 49.3 + - + -
161A VAL* 3.9 24.7 - - + -
237A ILE* 6.2 0.4 - - + -
241A MET* 5.6 1.1 - - - -
281A LEU* 4.1 4.0 - - + -
299A LEU* 3.3 37.9 - - + -
300A LEU* 3.4 21.3 - - + +
302A ASP* 3.0 7.3 + - + +
304A PHE* 1.3 102.8 - + - +
306A THR* 1.3 62.7 + - + +
307A SER 3.4 5.8 - - - +
308A GLY 5.3 0.3 - - - +
310A ILE* 4.0 17.8 - - - +
162B LEU* 4.9 4.7 - - - +
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Residues in contact with THR 306 (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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300A LEU 4.7 2.7 - - - +
301A ASN* 4.1 19.1 - - - +
302A ASP 3.1 15.1 + - - +
303A GLU* 3.6 10.2 - - - +
305A PHE* 1.3 77.3 - - - +
307A SER* 1.3 58.1 + - - +
110B HIS* 2.8 32.1 + - - -
162B LEU* 4.0 22.3 - - + +
165B GLN* 3.6 27.8 - - - +
169B ARG* 3.8 13.1 + - - +
300B LEU* 4.4 7.4 - - + -
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Residues in contact with SER 307 (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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154A ARG* 3.5 1.7 + - - -
303A GLU* 2.9 29.8 + - - +
304A PHE* 3.1 18.7 - - - +
305A PHE 3.7 4.7 - - - +
306A THR* 1.3 82.2 + - - +
308A GLY* 1.3 71.1 + - - +
110B HIS* 4.0 19.1 - - - -
166B TYR* 4.4 10.6 - - - +
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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