Contacts of the helix formed by residues 248 - 255 (chain A) in PDB entry 1GZD
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 248 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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211A THR* 3.6 23.2 + - - +
246A SER* 3.3 4.3 + - - +
247A THR* 1.3 79.1 + - - +
249A THR* 1.3 64.9 + - - +
250A THR* 3.3 11.6 + - - -
251A LYS* 2.4 50.0 + - + +
252A VAL* 3.0 26.9 + - - +
262A MET* 4.5 0.9 - - - -
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Residues in contact with THR 249 (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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247A THR 3.4 6.6 + - - -
248A ASN* 1.3 68.6 - - - +
250A THR* 1.3 69.7 + - - +
252A VAL* 3.2 2.1 + - - +
253A LYS* 2.9 48.7 + - + +
259A PRO* 5.6 5.8 - - + -
262A MET* 3.7 32.4 - - + +
264A GLU* 5.0 3.1 + - - -
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Residues in contact with THR 250 (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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248A ASN* 3.3 10.7 + - - -
249A THR* 1.3 79.5 - - - +
251A LYS* 1.3 60.3 - - + +
253A LYS* 3.3 8.8 + - + +
254A GLU* 2.7 60.5 + - - +
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Residues in contact with LYS 251 (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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211A THR 4.3 0.4 - - - +
212A PHE* 3.6 29.8 - - + +
213A THR* 4.0 24.9 - - + -
248A ASN* 2.4 48.2 + - - +
250A THR* 1.3 69.1 - - + +
252A VAL* 1.3 65.6 + - - +
254A GLU* 2.9 49.6 + - - +
255A PHE* 3.0 18.2 + - - +
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Residues in contact with VAL 252 (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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212A PHE* 3.6 13.6 - - + -
244A ALA* 3.8 20.4 - - + -
246A SER* 3.8 19.1 - - - -
248A ASN 3.0 18.7 + - - +
249A THR 3.4 7.6 - - - +
251A LYS* 1.3 73.8 - - - +
253A LYS* 1.3 62.2 + - + +
255A PHE* 3.0 19.8 + - - +
256A GLY 3.4 7.1 + - - -
257A ILE* 3.4 33.1 + - + +
258A ASP 5.4 0.7 - - - +
259A PRO* 5.4 1.6 - - + -
262A MET* 3.6 33.0 - - + -
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Residues in contact with LYS 253 (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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249A THR* 2.9 42.7 + - + +
250A THR* 3.6 8.7 - - - +
252A VAL* 1.3 79.7 - - + +
254A GLU* 1.3 60.1 + - - +
256A GLY* 2.9 22.5 + - - -
257A ILE 4.2 8.0 - - - +
259A PRO* 4.1 29.1 - - + +
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Residues in contact with GLU 254 (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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250A THR* 2.7 52.3 + - - +
251A LYS* 2.9 37.7 + - - +
253A LYS* 1.3 79.2 - - - +
255A PHE* 1.3 58.6 + - - +
256A GLY 3.3 0.4 - - - -
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Residues in contact with PHE 255 (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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207A ILE* 4.7 3.4 - - + -
212A PHE* 3.5 24.7 - + + -
218A ILE* 4.7 14.1 - - + -
221A ALA* 3.6 39.3 - - + -
222A GLU* 4.0 25.1 - - + -
225A LYS* 3.3 45.7 + - + +
238A VAL* 5.9 1.1 - - + -
242A PHE* 4.6 10.8 - + + -
251A LYS 3.0 4.2 + - - +
252A VAL 3.0 11.3 + - - +
254A GLU* 1.3 77.6 - - - +
256A GLY* 1.3 55.4 + - - +
257A ILE* 3.7 31.2 - - + -
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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